Código Java

martes, 16 de marzo de 2010

Uso de StringBuffer. reverse (invertir strings).

Codigo:

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Main extends JFrame {
.FlowLayout v = new FlowLayout();
.JButton boton1 = new JButton(" Revertir ");
.TextArea text = new TextArea("", 3, 30, 3);//row,col,nullScroll
.public Main() {
...text.setText("Hola mundo");
...add(text);
...add(boton1);
...getContentPane().setLayout(v);
...setDefaultCloseOperation(EXIT_ON_CLOSE);
...setSize(300,150);
...setVisible(true);
//Event al pulsar boton
...boton1.addActionListener (new ActionListener(){
....public void actionPerformed(ActionEvent e){
.....StringBuffer str1 = new StringBuffer(text.getText());
........text.setText(str1.reverse().toString());
......}
....});
..}
..public static void main(String[] args) { new Main(); }
}

Resultado:

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