Скачать или смотреть Java Swing: JCheckBox & ItemListener

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   • Java Frontend  
Screencast from 05 16 2023 05:50:19 AM



import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;

/*
Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
*/
/**
*
@author fdr
*/
public class CBox2 {

public CBox2() {
JFrame g = new JFrame("JCheckBox example");
final JLabel label = new JLabel();
label.setAlignmentX(JLabel.CENTER);
label.setSize(450, 150);

JCheckBox box1 = new JCheckBox("Python");
box1.setBounds(160, 170, 70, 70);

JCheckBox box2 = new JCheckBox("Ruby");
box2.setBounds(160, 250, 70, 70);
g.add(box2);
g.add(box1);
g.add(label);

box1.addItemListener(new ItemListener() {
@Override
public void itemStateChanged(ItemEvent ie) {
label.setText("Python checkbox "
(ie.getStateChange() == 1 ? "checked" : "unchecked"));
}

});

box2.addItemListener(new ItemListener() {
@Override
public void itemStateChanged(ItemEvent ie) {
label.setText("Ruby checkbox "
(ie.getStateChange() == 1 ? "checked" : "unchecked"));
}

});

g.setSize(500, 500);
g.setLayout(null);
g.setVisible(true);
g.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

public static void main(String[] args) {
CBox2 box2 = new CBox2();
}
}