Swing Examples - Using Checkboxes

Following example showcase how to use standard checkboxes in a Java Swing application.

We are using the following APIs.

• JCheckBox − To create a standard checkbox.

• JCheckBox.setEnabled(false); − To disable a checkbox.

• JCheckBox.setMnemonic(KeyEvent.VK_C) − To set a keyboard shortcut a checkbox.

• JCheckBox.setSelected(true) − To set a checkbox selected.

Example

import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.LayoutManager;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;

public class SwingTester {
   public static void main(String[] args) {
      createWindow();
   }

   private static void createWindow() {    
      JFrame frame = new JFrame("Swing Tester");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

      createUI(frame);
      frame.setSize(560, 200);      
      frame.setLocationRelativeTo(null);  
      frame.setVisible(true);
   }

   private static void createUI(final JFrame frame){  
      JPanel panel = new JPanel();
      LayoutManager layout = new FlowLayout();  
      panel.setLayout(layout);       

      JCheckBox checkBox1 = new JCheckBox("Check Me 1");
      JCheckBox checkBox2 = new JCheckBox("Check Me 2");
      checkBox2.setEnabled(false);
      JCheckBox checkBox3 = new JCheckBox("Check Me 3");
      checkBox3.setMnemonic(KeyEvent.VK_C);

      checkBox1.addActionListener(new ActionListener() {
         @Override
         public void actionPerformed(ActionEvent e) {
            Object source = e.getSource();
            JOptionPane.showMessageDialog(frame, 
               ((JCheckBox)source).getText() + ": " + ((JCheckBox)source).isSelected());
         }
      });  

      panel.add(checkBox1);
      panel.add(checkBox2);
      panel.add(checkBox3);

      frame.getContentPane().add(panel, BorderLayout.CENTER);    
   }
}

Output