Oprea

JList

---

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

public class Gui extends JFrame{

private JList list;
private static String[] colornames = {"black", "blue", "red", "white"};
private static Color[] colors = {Color.BLACK, Color.BLUE, Color.RED, Color.WHITE};

public Gui() {
super("title");
setLayout( new FlowLayout());

list = new JList(colornames);
list.setVisibleRowCount(4);
list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
add(new JScrollPane(list));

list.addListSelectionListener(
new ListSelectionListener() {
public void valueChanged(ListSelectionEvent event) {
getContentPane().setBackground(colors[list.getSelectedIndex()]);
}
}
);
}
}

 

import javax.swing.JFrame;

public class apple {

public static void main(String[] args) {
Gui go = new Gui();
go.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
go.setSize(320, 280);
go.setVisible(true);

}

}