JLabels are not visible

[Girish Singhal]

Here is my code:

import java.awt.*;
import java.awt.Container;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import static java.awt.BorderLayout.*;

public class NetworkMap {

private int x=0, y=0;
private JFrame mainFrame;
private JLabel star1 = new JLabel("starIcon");
private JLabel star2 = new JLabel("starIcon");
private JPanel mapPanel = new JPanel(null);
public static final int WINDOW_WIDTH = 800; // pixels
public static final int WINDOW_HEIGHT = 600;

public NetworkMap() {
this.x = 100;
this.y = 100;

mainFrame = new JFrame("Network Map");
mainFrame.setSize(WINDOW_WIDTH, WINDOW_HEIGHT);
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
star1.addMouseMotionListener(new moveIconHandler());
star1.setBounds(x,y,star1.getIconWidth(), star1.getIconHeight());
mapPanel.add(star1);

this.x+=100;
this.y+=100;
star2.addMouseMotionListener(new moveIconHandler());
star2.setBounds(x,y,star2.getIconWidth(), star2.getIconHeight());
mapPanel.add(star2);

mainFrame.add(mapPanel);
mainFrame.setVisible(true);
}


private class moveIconHandler extends MouseMotionAdapter {
public void mouseDragged(MouseEvent e) {
System.out.println("x = " + e.getX() + ", y = " + e.getY()+ "\n");
Component c = e.getComponent();
c.setLocation( c.getX()+e.getX(), c.getY()+e.getY() );

mainFrame.repaint();
}
}


public static void main(String[] args) {
NetworkMap mymap = new NetworkMap();
}

}

why my JLabels are not visible on the frame.

[Mohamed Sanaulla]

There seems to be some issue with the code- There is not getIconHeight, getIconWidth for the JLabel. You might be trying to use getIcon().getIconXXX().

[Ranganathan Kaliyur Mannar]

Your code doesn't even compile. First, post the correct code.