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Formulario42.java
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Formulario42.java
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import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class Formulario42 extends JFrame implements ChangeListener{
private JRadioButton radio1, radio2, radio3;
private ButtonGroup bg;
public Formulario40(){
setLayout(null);
bg = new ButtonGroup();
radio1 = new JRadioButton("640x480");
radio1.setBounds(10,20,100,30);
radio1.addChangeListener(this);
add(radio1);
bg.add(radio1);
radio2 = new JRadioButton("800x600");
radio2.setBounds(10,70,100,30);
radio2.addChangeListener(this);
add(radio2);
bg.add(radio2);
radio3 = new JRadioButton("1024x768");
radio3.setBounds(10,120,100,30);
radio3.addChangeListener(this);
add(radio3);
bg.add(radio3);
}
public void stateChanged(ChangeEvent e){
if (radio1.isSelected()){
setSize(640,480);
}
if (radio2.isSelected()){
setSize(800,600);
}
if (radio3.isSelected()){
setSize(1024,768);
}
}
public static void main (String args[]){
Formulario40 formulario1 = new Formulario40();
formulario1.setBounds(0,0,350,230);
formulario1.setVisible(true);
//formulario1.setLocationRelativeTo(null);
formulario1.setResizable(true);
}
}