12) Write a Java Swing program that selects day from JList using ListSelectionEvent.

source file name: ListDemo.java

// java Program to create a simple JList

 import java.awt.event.*;

 import java.awt.*;

 import javax.swing.*;

 import javax.swing.event.*; 

class ListDemo extends JFrame implements ListSelectionListener

 { 

 //lists static JList ls; JLabel lbtxt;

 //main class 

    public static void main(String[] args) 

     { 

     ListDemo f=new ListDemo();

     f.setTitle("SwingListProgram"); 

     f.setSize(400,400);

     f.show(); 

     } 

     public ListDemo()

     { 

     JLabel lb= new JLabel("select the day of the week");

     lbtxt= new JLabel(""); 

     setLayout(null); 

 //String array to store weekdays

     String week[]= { "Monday","Tuesday","Wednesday", "Thursday","Friday","Saturday","Sunday"}; //create list

     ls= new JList(week); 

     lb.setBounds(50,50,150,30);

     ls.setBounds(200,50,100,150);

     lbtxt.setBounds(50,200,150,30);

     add(lb);

    add(ls);

    add(lbtxt); 

     ls.addListSelectionListener(this); 

     } 

     public void valueChanged(ListSelectionEvent lse)

     { 

     System.out.println("selected day: "+ls.getSelectedValue());

     lbtxt.setText("selected day: "+ls.getSelectedValue()); 

     } 

}

 output: