Código Java

domingo, 5 de diciembre de 2021

Regla de tres

En Netbeans se crea un JFrame y en modo diseño se añaden los siguientes componentes:

jButton_Calcular
jButton_Info
jButton_X

jTextField3 -> "------=------"
jTextField_a
jTextField_b
jTextField_c
jTextField_X
jTextField_Resultat

jPanels varios para agrupar y facilitar la inserción de los componentes en la GUID.

Código Java (ReglaTres.java):

package regla;

import java.text.DecimalFormat;
import javax.swing.JOptionPane;

public class ReglaTres extends javax.swing.JFrame {

    DecimalFormat f = new DecimalFormat("#.00");

    public ReglaTres() {
        initComponents();
        this.setLocationRelativeTo(null);
    }

    private void initComponents() { ... Código generado automaticamente NetBeans* ... }

    private void jButton_CalcularActionPerformed(java.awt.event.ActionEvent evt) {
        calcular();
    }

    private void jButton_XActionPerformed(java.awt.event.ActionEvent evt) {
        this.dispose();
    }

    private void jButton_InfoActionPerformed(java.awt.event.ActionEvent evt) {

        String msg
                = "\n Autor: Censor Cosmico\n"
                + " Versión: 2021 DIC\n"
                + " Fecha de creación: 04-12-2021\n"
                + " http://censorcosmico.blogspot.com.es/\n ";

        JOptionPane.showMessageDialog(null, msg, "Info - Regla de Tres -", JOptionPane.INFORMATION_MESSAGE);

    }

    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new ReglaTres().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify
    private javax.swing.JButton jButton_Calcular;
    private javax.swing.JButton jButton_Info;
    private javax.swing.JButton jButton_X;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JPanel jPanel3;
    private javax.swing.JPanel jPanel4;
    private javax.swing.JPanel jPanel5;
    private javax.swing.JPanel jPanel6;
    private javax.swing.JPanel jPanel7;
    private javax.swing.JTextField jTextField3;
    private javax.swing.JTextField jTextField_Resultat;
    private javax.swing.JTextField jTextField_X;
    private javax.swing.JTextField jTextField_a;
    private javax.swing.JTextField jTextField_b;
    private javax.swing.JTextField jTextField_c;
    // End of variables declaration

    private void calcular() {
        float a = Float.parseFloat(jTextField_a.getText());
        float b = Float.parseFloat(jTextField_b.getText());
        float c = Float.parseFloat(jTextField_c.getText());
        float x = b * c / a;
        jTextField_Resultat.setText("" + f.format(x));
    }
}

Resultado:

*Código generado por Netbeans en modo diseño:

    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        jPanel5 = new javax.swing.JPanel();
        jPanel1 = new javax.swing.JPanel();
        jPanel2 = new javax.swing.JPanel();
        jTextField_a = new javax.swing.JTextField();
        jTextField_b = new javax.swing.JTextField();
        jPanel3 = new javax.swing.JPanel();
        jTextField_c = new javax.swing.JTextField();
        jTextField_X = new javax.swing.JTextField();
        jPanel4 = new javax.swing.JPanel();
        jTextField3 = new javax.swing.JTextField();
        jPanel6 = new javax.swing.JPanel();
        jButton_Calcular = new javax.swing.JButton();
        jTextField_Resultat = new javax.swing.JTextField();
        jLabel4 = new javax.swing.JLabel();
        jPanel7 = new javax.swing.JPanel();
        jButton_Info = new javax.swing.JButton();
        jButton_X = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
        setResizable(false);

        jLabel1.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 36)); // NOI18N
        jLabel1.setForeground(new java.awt.Color(0, 0, 204));
        jLabel1.setText("Regla de Tres - v2021 -");

        jPanel2.setLayout(new java.awt.GridLayout(1, 0));

        jTextField_a.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 48)); // NOI18N
        jTextField_a.setHorizontalAlignment(javax.swing.JTextField.CENTER);
        jTextField_a.setText("1");
        jTextField_a.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        jPanel2.add(jTextField_a);

        jTextField_b.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 48)); // NOI18N
        jTextField_b.setHorizontalAlignment(javax.swing.JTextField.CENTER);
        jTextField_b.setText("1");
        jTextField_b.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        jPanel2.add(jTextField_b);

        jPanel3.setLayout(new java.awt.GridLayout(1, 0));

        jTextField_c.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 48)); // NOI18N
        jTextField_c.setHorizontalAlignment(javax.swing.JTextField.CENTER);
        jTextField_c.setText("100");
        jTextField_c.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        jPanel3.add(jTextField_c);

        jTextField_X.setEditable(false);
        jTextField_X.setBackground(new java.awt.Color(255, 255, 204));
        jTextField_X.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 48)); // NOI18N
        jTextField_X.setHorizontalAlignment(javax.swing.JTextField.CENTER);
        jTextField_X.setText("X");
        jTextField_X.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        jPanel3.add(jTextField_X);

        jPanel4.setLayout(new java.awt.GridLayout(1, 0));

        jTextField3.setEditable(false);
        jTextField3.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 48)); // NOI18N
        jTextField3.setHorizontalAlignment(javax.swing.JTextField.CENTER);
        jTextField3.setText("------------ = ------------");
        jTextField3.setBorder(null);
        jPanel4.add(jTextField3);

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jPanel4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, 498, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGap(0, 0, Short.MAX_VALUE)))
                .addContainerGap())
        );

        jPanel1Layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {jPanel2, jPanel3});

        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, 96, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jPanel4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

        jPanel1Layout.linkSize(javax.swing.SwingConstants.VERTICAL, new java.awt.Component[] {jPanel2, jPanel3});

        jButton_Calcular.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 48)); // NOI18N
        jButton_Calcular.setText("Calcular");
        jButton_Calcular.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton_CalcularActionPerformed(evt);
            }
        });

        jTextField_Resultat.setEditable(false);
        jTextField_Resultat.setBackground(new java.awt.Color(255, 255, 204));
        jTextField_Resultat.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 48)); // NOI18N
        jTextField_Resultat.setHorizontalAlignment(javax.swing.JTextField.CENTER);
        jTextField_Resultat.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));

        jLabel4.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 24)); // NOI18N
        jLabel4.setText("Resultat (X):");

        javax.swing.GroupLayout jPanel6Layout = new javax.swing.GroupLayout(jPanel6);
        jPanel6.setLayout(jPanel6Layout);
        jPanel6Layout.setHorizontalGroup(
            jPanel6Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel6Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel6Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jButton_Calcular, javax.swing.GroupLayout.DEFAULT_SIZE, 242, Short.MAX_VALUE)
                    .addComponent(jTextField_Resultat)
                    .addComponent(jLabel4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                .addContainerGap())
        );
        jPanel6Layout.setVerticalGroup(
            jPanel6Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel6Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jButton_Calcular, javax.swing.GroupLayout.DEFAULT_SIZE, 102, Short.MAX_VALUE)
                .addGap(18, 18, 18)
                .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jTextField_Resultat, javax.swing.GroupLayout.PREFERRED_SIZE, 96, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );

        javax.swing.GroupLayout jPanel5Layout = new javax.swing.GroupLayout(jPanel5);
        jPanel5.setLayout(jPanel5Layout);
        jPanel5Layout.setHorizontalGroup(
            jPanel5Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel5Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(18, 18, 18)
                .addComponent(jPanel6, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );
        jPanel5Layout.setVerticalGroup(
            jPanel5Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel5Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel5Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jPanel6, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap())
        );

        jPanel7.setLayout(new java.awt.GridLayout());

        jButton_Info.setFont(new java.awt.Font("Barlow Condensed Medium", 0, 18)); // NOI18N
        jButton_Info.setText("Info");
        jButton_Info.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton_InfoActionPerformed(evt);
            }
        });
        jPanel7.add(jButton_Info);

        jButton_X.setFont(new java.awt.Font("Barlow Condensed Medium", 0, 18)); // NOI18N
        jButton_X.setText("X");
        jButton_X.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton_XActionPerformed(evt);
            }
        });
        jPanel7.add(jButton_X);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addGap(18, 18, 18)
                        .addComponent(jPanel7, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(20, 20, 20))
                    .addComponent(jPanel5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 51, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jPanel7, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jPanel5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(56, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>

Interés compuesto

En Netbeans se crea un JFrame y en modo diseño se añaden los siguientes componentes:

jButton_Info
jButton_X
jButton_Calcular
jButton_Limpiar

jTextField_PeriodoAhorro
jTextField_Rentabilidad
jTextField_SaldoFinal
jTextField_SaldoInicial

jLabels varios para identificar tipos de datos que hay que añadir en los jTextFields.
jPanels varios para agrupar y facilitar la inserción de los componentes cuando operamos en modo diseño.

Código Java (InteresCompuesto.java)

package interes_c;

import java.text.DecimalFormat;
import javax.swing.JOptionPane;

public class InteresCompuesto extends javax.swing.JFrame {

    DecimalFormat f = new DecimalFormat("###, ###. ##");

    public InteresCompuesto() {
        initComponents();
        this.setLocationRelativeTo(null);
    }

    private void initComponents() { ... *Código generado automaticamente por NetBeans ...}

    private void jButton_XActionPerformed(java.awt.event.ActionEvent evt) {
        this.dispose();
    }

    private void jButton_InfoActionPerformed(java.awt.event.ActionEvent evt) {

        String msg
                = "\n Autor: Censor Cosmico\n"
                + " Versión: 2021 DIC\n"
                + " Fecha de creación: 04-12-2021\n"
                + " http://censorcosmico.blogspot.com.es/\n ";

        JOptionPane.showMessageDialog(null, msg, "Info - Interés Compuesto -", JOptionPane.INFORMATION_MESSAGE);

    }

    private void jButton_LimpiarActionPerformed(java.awt.event.ActionEvent evt) {
        jTextField_PeriodoAhorro.setText("");
        jTextField_Rentabilidad.setText("");
        jTextField_SaldoInicial.setText("");
        jTextField_SaldoFinal.setText("?");
    }

    private void jButton_CalcularActionPerformed(java.awt.event.ActionEvent evt) {
        calcular();
    }

    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new InteresCompuesto().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify
    private javax.swing.JButton jButton_Calcular;
    private javax.swing.JButton jButton_Info;
    private javax.swing.JButton jButton_Limpiar;
    private javax.swing.JButton jButton_X;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JLabel jLabel8;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel10;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JPanel jPanel3;
    private javax.swing.JPanel jPanel6;
    private javax.swing.JPanel jPanel7;
    private javax.swing.JPanel jPanel8;
    private javax.swing.JTextField jTextField_PeriodoAhorro;
    private javax.swing.JTextField jTextField_Rentabilidad;
    private javax.swing.JTextField jTextField_SaldoFinal;
    private javax.swing.JTextField jTextField_SaldoInicial;
    // End of variables declaration

    private void calcular() {
        // Formula interes compuesto: Cn=C0*(1+i)^n
        float n = Float.parseFloat(jTextField_PeriodoAhorro.getText());
        float c0 = Float.parseFloat(jTextField_SaldoInicial.getText());
        float i = Float.parseFloat(jTextField_Rentabilidad.getText()) / 100f;
        double cn = c0 * Math.pow((1 + i), n);
        jTextField_SaldoFinal.setText("" + f.format(cn));
    }
}

Resultado:

*Código generado por Netbeans en modo diseño:

    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        jPanel7 = new javax.swing.JPanel();
        jButton_Info = new javax.swing.JButton();
        jButton_X = new javax.swing.JButton();
        jPanel1 = new javax.swing.JPanel();
        jPanel2 = new javax.swing.JPanel();
        jTextField_PeriodoAhorro = new javax.swing.JTextField();
        jTextField_Rentabilidad = new javax.swing.JTextField();
        jPanel3 = new javax.swing.JPanel();
        jTextField_SaldoInicial = new javax.swing.JTextField();
        jTextField_SaldoFinal = new javax.swing.JTextField();
        jPanel8 = new javax.swing.JPanel();
        jLabel7 = new javax.swing.JLabel();
        jLabel8 = new javax.swing.JLabel();
        jPanel10 = new javax.swing.JPanel();
        jLabel3 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        jPanel6 = new javax.swing.JPanel();
        jButton_Limpiar = new javax.swing.JButton();
        jButton_Calcular = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
        setResizable(false);

        jLabel1.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 36)); // NOI18N
        jLabel1.setForeground(new java.awt.Color(0, 0, 204));
        jLabel1.setText("Interés Compuesto");

        jPanel7.setBackground(new java.awt.Color(0, 0, 0));
        jPanel7.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        jPanel7.setLayout(new java.awt.GridLayout(1, 0));

        jButton_Info.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 18)); // NOI18N
        jButton_Info.setText("Info");
        jButton_Info.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton_InfoActionPerformed(evt);
            }
        });
        jPanel7.add(jButton_Info);

        jButton_X.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 18)); // NOI18N
        jButton_X.setText("X");
        jButton_X.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton_XActionPerformed(evt);
            }
        });
        jPanel7.add(jButton_X);

        jPanel2.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        jPanel2.setLayout(new java.awt.GridLayout(1, 0));

        jTextField_PeriodoAhorro.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 48)); // NOI18N
        jTextField_PeriodoAhorro.setHorizontalAlignment(javax.swing.JTextField.CENTER);
        jTextField_PeriodoAhorro.setText("1");
        jTextField_PeriodoAhorro.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        jPanel2.add(jTextField_PeriodoAhorro);

        jTextField_Rentabilidad.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 48)); // NOI18N
        jTextField_Rentabilidad.setHorizontalAlignment(javax.swing.JTextField.CENTER);
        jTextField_Rentabilidad.setText("10");
        jTextField_Rentabilidad.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        jPanel2.add(jTextField_Rentabilidad);

        jPanel3.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        jPanel3.setLayout(new java.awt.GridLayout(1, 0));

        jTextField_SaldoInicial.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 48)); // NOI18N
        jTextField_SaldoInicial.setHorizontalAlignment(javax.swing.JTextField.CENTER);
        jTextField_SaldoInicial.setText("100");
        jTextField_SaldoInicial.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        jPanel3.add(jTextField_SaldoInicial);

        jTextField_SaldoFinal.setEditable(false);
        jTextField_SaldoFinal.setBackground(new java.awt.Color(255, 255, 204));
        jTextField_SaldoFinal.setFont(new java.awt.Font("Barlow Condensed Medium", 1, 48)); // NOI18N
        jTextField_SaldoFinal.setHorizontalAlignment(javax.swing.JTextField.CENTER);
        jTextField_SaldoFinal.setText("?");
        jTextField_SaldoFinal.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        jPanel3.add(jTextField_SaldoFinal);

        jPanel8.setLayout(new java.awt.GridLayout(1, 0));

        jLabel7.setFont(new java.awt.Font("Barlow Condensed Medium", 0, 18)); // NOI18N
        jLabel7.setText("Periodo de ahorro (años):");
        jPanel8.add(jLabel7);

        jLabel8.setFont(new java.awt.Font("Barlow Condensed Medium", 0, 18)); // NOI18N
        jLabel8.setText("Rentabilidad (%):");
        jPanel8.add(jLabel8);

        jPanel10.setLayout(new java.awt.GridLayout(1, 0));

        jLabel3.setFont(new java.awt.Font("Barlow Condensed Medium", 0, 18)); // NOI18N
        jLabel3.setText("Saldo inicial:");
        jPanel10.add(jLabel3);

        jLabel5.setFont(new java.awt.Font("Barlow Condensed Medium", 0, 18)); // NOI18N
        jLabel5.setText("Saldo final:");
        jPanel10.add(jLabel5);

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, 498, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jPanel8, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                        .addContainerGap())
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addComponent(jPanel10, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGap(8, 8, 8))))
        );

        jPanel1Layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {jPanel2, jPanel3});

        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel8, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, 96, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(18, 18, 18)
                .addComponent(jPanel10, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );

        jPanel1Layout.linkSize(javax.swing.SwingConstants.VERTICAL, new java.awt.Component[] {jPanel2, jPanel3});

        jButton_Limpiar.setFont(new java.awt.Font("Barlow Condensed Medium", 0, 18)); // NOI18N
        jButton_Limpiar.setText("Limpiar");
        jButton_Limpiar.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton_LimpiarActionPerformed(evt);
            }
        });

        jButton_Calcular.setFont(new java.awt.Font("Barlow Condensed Medium", 0, 18)); // NOI18N
        jButton_Calcular.setText("Calcular");
        jButton_Calcular.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton_CalcularActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout jPanel6Layout = new javax.swing.GroupLayout(jPanel6);
        jPanel6.setLayout(jPanel6Layout);
        jPanel6Layout.setHorizontalGroup(
            jPanel6Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel6Layout.createSequentialGroup()
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(jButton_Calcular)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jButton_Limpiar)
                .addContainerGap())
        );

        jPanel6Layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {jButton_Calcular, jButton_Limpiar});

        jPanel6Layout.setVerticalGroup(
            jPanel6Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel6Layout.createSequentialGroup()
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addGroup(jPanel6Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton_Calcular)
                    .addComponent(jButton_Limpiar))
                .addContainerGap())
        );

        jPanel6Layout.linkSize(javax.swing.SwingConstants.VERTICAL, new java.awt.Component[] {jButton_Calcular, jButton_Limpiar});

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 288, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(98, 98, 98)
                        .addComponent(jPanel7, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                        .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(jPanel6, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 51, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jPanel7, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(17, 17, 17)
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jPanel6, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>

sábado, 7 de agosto de 2021

Nuevos proyectos para iniciar en Septiembre

Proyectos 2021 - 2022

1- Juego de Ajedrez en Java (en proceso...)
1.1- Añadir IA de aprendizaje automático jugando contra sí mismo.

2- Creación de una Criptomoneda en Java (en mente...)

¿cúal os parece más interesante? - Ponérmelo en los comentarios -

sábado, 7 de noviembre de 2020

Gráficos en 2D. Diagrama de Voronoi.

Código Java (voronoi.java):

package voronoi;

import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.util.Random;

public class Voronoi extends javax.swing.JFrame {

    BufferedImage imagen;
    int px[], py[], color[], zonas = 21, size = 350;

    public Voronoi() {

        super("Diagrama de Voronoi");
        setBounds(0, 0, size, size);
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        imagen = new BufferedImage(size, size, BufferedImage.TYPE_INT_RGB);
        px = new int[zonas];
        py = new int[zonas];
        color = new int[zonas];
        Random rand = new Random();
        for (int i = 0; i < zonas; i++) {
            px[i] = rand.nextInt(size);
            py[i] = rand.nextInt(size);
            color[i] = rand.nextInt(16777215);
        }
        int n;
        for (int x = 0; x < size; x++) {
            for (int y = 0; y < size; y++) {
                n = 0;
                for (int i = 0; i < zonas; i++) {
                    if (distance(px[i], x, py[i], y) < distance(px[n], x, py[n], y)) {
                        n = i;
                    }
                }
                imagen.setRGB(x, y, color[n]);
            }
        }
    }

    @Override
    public void paint(Graphics g) {
        g.drawImage(imagen, 0, 0, this);
    }

    double distance(int x1, int x2, int y1, int y2) {
        double d;
        d = Math.sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
        return d;
    }

    public static void main(String[] args) {
        new Voronoi().setVisible(true);
    }

}

Resultado:

domingo, 25 de octubre de 2020

Gráficos en 2D. Diseño 2

Código Java (Design2.java):

package design;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import javax.swing.Timer;

public class Design2 extends javax.swing.JFrame {

    Trazador t;

    public Design2() {
        initComponents();
        this.setLocationRelativeTo(null);

        t = new Trazador(
                jPanel1.getGraphics(),
                jPanel1.getWidth(),
                jPanel1.getHeight(),
                0);

        Timer timer = new Timer(100, (ActionEvent e) -> {
            int a = 0;
            int b = 0;
            t.salta(245, 300);
            while (true) {
                for (int i = 0; i < 4; i++) {
                    t.avanza(80);
                    t.gira(90);
                }
                t.gira(15);
                a++;
                if (a >= 390 / 15) {
                    t.avanza(50);
                    a = 0;
                    b++;
                    if (b >= 12) {
                        break;
                    }
                }
            }
        });
        timer.start();
        timer.setRepeats(false);
    }

    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Design 2 - 2020");
        setMinimumSize(new java.awt.Dimension(450, 450));
        setPreferredSize(new java.awt.Dimension(300, 300));
        setResizable(false);
        getContentPane().setLayout(new java.awt.GridLayout(1, 0));

        jPanel1.setBackground(new java.awt.Color(0, 0, 0));
        jPanel1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jPanel1MouseClicked(evt);
            }
        });

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 643, Short.MAX_VALUE)
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 488, Short.MAX_VALUE)
        );

        getContentPane().add(jPanel1);

        getAccessibleContext().setAccessibleName("");

        pack();
    }// </editor-fold>

    private void jPanel1MouseClicked(java.awt.event.MouseEvent evt) {

    }

    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Design2().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify
    private javax.swing.JPanel jPanel1;
    // End of variables declaration

    private static class Trazador {

        double x, y, angulo;
        Graphics g;

        private Trazador(Graphics g, float x, float y, float angulo) {

            this.x = x;
            this.y = y;
            this.angulo = angulo * Math.PI / 180;
            this.g = g;

            Graphics2D g2 = (Graphics2D) g;
            g2.setStroke(new BasicStroke(0.3f));
            g2.setColor(Color.YELLOW);
            g2.setRenderingHint(
                    RenderingHints.KEY_ANTIALIASING,
                    RenderingHints.VALUE_ANTIALIAS_ON);

        }

        public void gira(double angulo) {
            this.angulo += angulo * Math.PI / 180;
        }

        public void avanza(double distancia) {
            double x2 = x + distancia * Math.cos(angulo);
            double y2 = y - distancia * Math.sin(angulo);
            g.drawLine((int) x2, (int) y2, (int) x, (int) y);
            salta(x2, y2);
        }

        public void salta(double x, double y) {
            this.x = x;
            this.y = y;
        }
    }
}

Resultado:

Gráficos en 2D. Diseño 1

Código Java (Design1.java):

package design;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import javax.swing.Timer;

public class Design1 extends javax.swing.JFrame {

    Trazador t;

    public Design1() {
        initComponents();
        this.setLocationRelativeTo(null);

        t = new Trazador(
                jPanel1.getGraphics(),
                jPanel1.getWidth() / 2,
                jPanel1.getHeight() / 2,
                0);

        Timer timer = new Timer(100, (ActionEvent e) -> {
            int cont = 0;
            while (true) {
                for (int i = 0; i < 4; i++) {
                    t.avanza(90);
                    t.gira(90);
                }
                t.gira(5);
                cont++;
                if (cont >= 360 / 5) {
                    break;
                }
            }
        });
        timer.start();
        timer.setRepeats(false);
    }

    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Design 1 - 2020");
        setMinimumSize(new java.awt.Dimension(300, 300));
        setPreferredSize(new java.awt.Dimension(300, 300));
        setResizable(false);
        getContentPane().setLayout(new java.awt.GridLayout(1, 0));

        jPanel1.setBackground(new java.awt.Color(0, 0, 0));
        jPanel1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jPanel1MouseClicked(evt);
            }
        });

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 643, Short.MAX_VALUE)
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 488, Short.MAX_VALUE)
        );

        getContentPane().add(jPanel1);

        getAccessibleContext().setAccessibleName("");

        pack();
    }// </editor-fold>

    private void jPanel1MouseClicked(java.awt.event.MouseEvent evt) {

    }

    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Design1().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify
    private javax.swing.JPanel jPanel1;
    // End of variables declaration

    private static class Trazador {

        double x, y, angulo;
        Graphics g;

        private Trazador(Graphics g, float x, float y, float angulo) {

            this.x = x;
            this.y = y;
            this.angulo = angulo * Math.PI / 180;
            this.g = g;

            Graphics2D g2 = (Graphics2D) g;
            g2.setStroke(new BasicStroke(1));
            g2.setColor(Color.YELLOW);
            g2.setRenderingHint(
                    RenderingHints.KEY_ANTIALIASING,
                    RenderingHints.VALUE_ANTIALIAS_ON);

        }

        public void gira(double angulo) {
            this.angulo += angulo * Math.PI / 180;
        }

        public void avanza(double distancia) {
            double x2 = x + distancia * Math.cos(angulo);
            double y2 = y - distancia * Math.sin(angulo);
            g.drawLine((int) x2, (int) y2, (int) x, (int) y);
            salta(x2, y2);
        }

        public void salta(double x, double y) {
            this.x = x;
            this.y = y;
        }
    }
}

Resultado:

Gráficos en 2D. Diseño 0

Código Java (Principal.java):

package octagono;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import javax.swing.Timer;

public class Principal extends javax.swing.JFrame {

    Trazador t;

    public Principal() {
        initComponents();
        this.setLocationRelativeTo(null);

        t = new Trazador(
                jPanel1.getGraphics(),
                jPanel1.getWidth() / 2,
                jPanel1.getHeight() / 2,
                0);

        Timer timer = new Timer(100, (ActionEvent e) -> {
            for (int i = 0; i < 8; i++) {
                t.gira(-45);
                for (int j = 0; j < 8; j++) {
                    t.avanza(45);
                    t.gira(45);
                }
            }
        });
        timer.start();
        timer.setRepeats(false);
    }

    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Octogonal Shape");
        setMinimumSize(new java.awt.Dimension(300, 300));
        setPreferredSize(new java.awt.Dimension(300, 300));
        setResizable(false);
        getContentPane().setLayout(new java.awt.GridLayout());

        jPanel1.setBackground(new java.awt.Color(0, 0, 0));

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 643, Short.MAX_VALUE)
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 488, Short.MAX_VALUE)
        );

        getContentPane().add(jPanel1);

        pack();
    }

    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Principal().setVisible(true);
            }
        });
    }

    private javax.swing.JPanel jPanel1;

    private static class Trazador {

        double x, y, angulo;
        Graphics g;

        private Trazador(Graphics g, float x, float y, float angulo) {

            this.x = x;
            this.y = y;
            this.angulo = angulo * Math.PI / 180;
            this.g = g;

            Graphics2D g2 = (Graphics2D) g;
            g2.setStroke(new BasicStroke(2)); //Grosor pincel
            g2.setColor(Color.YELLOW); //Color
            g2.setRenderingHint(
                    RenderingHints.KEY_ANTIALIASING,
                    RenderingHints.VALUE_ANTIALIAS_ON);//Filtro de suavizado

        }

        public void gira(double angulo) {
            this.angulo += angulo * Math.PI / 180;
        }

        public void avanza(double distancia) {
            double x2 = x + distancia * Math.cos(angulo);
            double y2 = y - distancia * Math.sin(angulo);
            g.drawLine((int) x2, (int) y2, (int) x, (int) y);
            salta(x2, y2);
        }

        public void salta(double x, double y) {
            this.x = x;
            this.y = y;
        }
    }
}

Resultado:

sábado, 26 de septiembre de 2020

Sucesión de Fibonacci

La sucesión de Fibonacci comienza con los números 0 y 1 y a partir de estos cada número que les precede es la suma de los dos anteriores.

Código Java (Fibonacci.java):

package fibonacci;

public class Fibonacci {

    public static void main(String[] args) {
        int f0 = 0, f1 = 1, tmp;
        do {
            System.out.println(f0);
            tmp = f0 + f1;
            f0 = f1;
            f1 = tmp;
        } while (f0 < 1000);
    }

}

Resultado:

run:
0
1
1
2
3
5
8
13
21
34
55
89
144
233
377
610
987
BUILD SUCCESSFUL (total time: 0 seconds)

viernes, 12 de junio de 2020

Patrón III: Triángulo.

Código Java (Triangulos.java):

package triangulos;

import java.util.Scanner;

class Triangulos {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("Entra tamaño del triángulo: ");
        int n = in.nextInt();
        for (int i = n; i > 0; i--) {
            for (int j = 1; j < i; j++) {
                System.out.print(" ");
            }
            for (int j = i; j <= n; j++) {
                System.out.print("* ");
            }
            System.out.println("");
        }
    }

}

Resultado:

run:
Entra tamaño del triangulo: 10
         *
        * *
       * * *
      * * * *
     * * * * *
    * * * * * *
   * * * * * * *
* * * * * * * *
* * * * * * * * *
* * * * * * * * * *
BUILD SUCCESSFUL (total time: 3 seconds)

sábado, 16 de mayo de 2020

Cuadro binario aleatorio 16x16

Código Java (CuadroBinario.java):

package cuadrobinario;

public class CuadroBinario {

    public static void main(String[] args) {
        int n = 0;
        for (int i = 0; i < 16; i++) {
            for (int j = 0; j < 16; j++) {
                n = (int) (Math.random() * 2);
                System.out.print(String.format("%1$2s", n));
            }
            System.out.println("");
        }
    }

}

Resultado:

run:
1 0 0 1 0 1 1 1 0 1 1 1 1 0 0 0
1 0 0 0 0 1 1 1 0 0 1 1 0 1 1 1
0 0 0 0 0 1 1 0 0 1 1 1 1 0 0 0
0 1 1 0 0 1 1 1 0 0 1 0 0 0 0 1
0 1 1 0 0 0 0 1 0 0 0 0 0 1 1 1
1 1 0 0 0 1 0 1 1 0 1 1 0 0 0 1
1 0 0 1 0 1 0 0 1 1 1 0 0 0 0 0
1 1 0 1 0 0 0 1 0 0 0 0 0 1 1 1
1 1 1 1 0 0 1 0 1 0 0 0 1 1 1 0
1 0 1 1 1 1 1 1 1 1 1 0 1 0 0 1
0 0 0 0 0 1 1 0 1 1 1 0 0 1 0 0
0 1 1 1 0 1 0 0 0 1 1 0 0 1 1 0
1 0 1 0 1 0 0 0 0 0 0 0 1 0 0 1
1 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0
1 1 0 1 1 1 1 0 0 0 0 0 1 0 1 0
0 0 0 1 1 0 0 1 1 1 1 0 0 0 1 0
BUILD SUCCESSFUL (total time: 0 seconds)

viernes, 10 de abril de 2020

Patrón II: Cuadrado.

Código Java (Cuadros.java)

package cuadros;

import java.util.Scanner;

public class Cuadros {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("Entra tamaño del cuadro: ");
        int n = in.nextInt();
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                System.out.print("* ");
            }
            System.out.println("");
        }
    }

}

Resultado:

run:
Entra tamaño del cuadro: 10
* * * * * * * * * *
* * * * * * * * * *
* * * * * * * * * *
* * * * * * * * * *
* * * * * * * * * *
* * * * * * * * * *
* * * * * * * * * *
* * * * * * * * * *
* * * * * * * * * *
* * * * * * * * * *
BUILD SUCCESSFUL (total time: 2 seconds)

Archivo del blog

domingo, 5 de diciembre de 2021

sábado, 7 de agosto de 2021

sábado, 7 de noviembre de 2020

domingo, 25 de octubre de 2020

sábado, 26 de septiembre de 2020

viernes, 12 de junio de 2020

sábado, 16 de mayo de 2020

viernes, 10 de abril de 2020