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How to create a Java, that will allows the user to choose multiple products/ items.

+3 votes
asked Jan 28, 2021 by BrianViloria115 (140 points)

1 Answer

0 votes
answered Jan 28, 2021 by Purushottam Kumar (240 points)
ListSelectionListener is used to react to the change in selection of the value in JList Component

import javax.swing.*;

import java.awt.*;

import javax.swing.event.*;

class ListDemo extends JFrame implements ListSelectionListener

{

Container cp;

JList jlist;

JLabel lblPrice;

String[] prod={“Pen”,”Pencil”,”Ruler”,”Eraser”,”Shapner”};

int[] price={12,13,15,45,25};

ListDemo ()

{

cp=this.getContentPane();

cp.setLayout(new FlowLayout());

jlist =new JList(items);

lblPrice=new JLabel(“”);

jlist.addListSelectionListener(this);

cp.add(jlist);

cp.add(lblPrice);

}

public void valueChanged(ListSelectionEvent e)

{

if(jlist.getSelectedIndex()==-1)

{

lblPrice.setText(“no items selected”);

}

else

{

int index= jlist.getSelectedIndex();

lblPrice.setText(“Price: “+price[index]);

}

}

public static void main(String args[])

{

ListDemo lstObj= new ListDemo();

lstObj.setSize(400,400);

lstObj.setVisible(true);

lstObj.setDefaultCloseOperation(EXIT_ON_CLOSE);

}

}
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