We help IT Professionals succeed at work.
Get Started

How can I accept JList selection by SpaceBar?

glynco
glynco asked
on
234 Views
Last Modified: 2012-05-05
How can I accept JList selection by SpaceBar?
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class NewClass extends JPanel {
    String label[] = { "Zero","One","Two","Three","Four","Five","Six",
                       "Seven","Eight","Nine","Ten","Eleven" };
    JList list;
    JButton button;
    //JFrame frame;
 
    public NewClass( ) {
        this.setLayout(new BorderLayout( ));
        list = new JList(label);
        JScrollPane pane = new JScrollPane(list);
        button = new JButton("Print");
        button.addActionListener(new PrintListener( ));
 
        add(pane, BorderLayout.CENTER);
        add(button, BorderLayout.SOUTH);
        
     
    }
    
 
 
    class PrintListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            int selected[] = list.getSelectedIndices( );
            System.out.println("Selected Elements:  ");
 
            for (int i=0; i < selected.length; i++) {
                String element =
                      (String)list.getModel( ).getElementAt(selected[i]);
                System.out.println("  " + element);
            }
        }
    }
 
 
 
 
    public static void main(String s[]) {
         JFrame frame = new JFrame("Simple List Example");
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         
         NewClass newclass = new NewClass( );
         frame.setContentPane(newclass);
         
         //frame.setContentPane(new NewClass());
         javax.swing.JRootPane rootPane = frame.getRootPane();
		 rootPane.setDefaultButton(newclass.button);
 
         //frame.addWindowListener(new NewClass().new WindowDemoAdapter( )); 
         frame.addWindowListener(new NewClass(). new WindowDemoAdapter());
         
         frame.setSize(250, 200);
         frame.setVisible(true);
    }
 
 
 
class WindowDemoAdapter extends WindowAdapter {
public void windowClosing(WindowEvent e) {
System.out.println("Goodbye!");
//WindowDemo.this.setVisible(false); // window will close
//WindowDemo.this.dispose( ); // and be freed up.
System.exit(0);
}
}
 
    
} ///

Open in new window

Comment
Watch Question
CERTIFIED EXPERT
Distinguished Expert 2020
Commented:
This problem has been solved!
Unlock 1 Answer and 2 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE