[Kurplepush]

Im getting the following Error when executing my program:
[email protected]:~$ javac OlympicRingComponent.java
OlympicRingComponent.java:6: warning: The serializable class OlympicRingComponent does not declare a static final serialVersionUID field of type long
public class OlympicRingComponent extends JComponent

I have no idea why this is coming up
Heres my code:

import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Ellipse2D;
import javax.swing.JComponent;
import java.awt.Color;
public class OlympicRingComponent extends JComponent
{
	public void paintComponent(Graphics g)
	{
		Graphics2D g2= (Graphics2D) g;
			Ellipse2D.Double ring= new Ellipse2D.Double(100,100,100,100);
			g2.setColor(Color.BLUE);
			g2.draw(ring);
			ring.setFrame(210,100,100,100);
			g2.setColor(Color.BLACK);
			g2.draw(ring);
			ring.setFrame(320,100,100,100);
			g2.setColor(Color.RED);
			g2.draw(ring);
			ring.setFrame(170,170,100,100);
			g2.setColor(Color.YELLOW);
			g2.draw(ring);
			ring.setFrame(280,170,100,100);
			g2.setColor(Color.GREEN);		
			g2.draw(ring);
	}
}

[javadork]

Are you running this under Eclipse? I recall this warning used to come up in earlier versions of Eclipse, it's safe to ignore.

[bcranger]

Just ignore it. Usually, GUI Builders use them so you can identify them later. No need to have the ID. I Think PBL uses it but I forgot why.

[Kurplepush]

How do i get it to compile anyways?

[Dogstopper]

It should compile. It's just a warning. Errors cause it to not compile. Warnings, unless you change the settings, do not PREVENT a compile.

[pbl]

Kurplepush, on 07 October 2010 - 03:27 PM, said:

How do i get it to compile anyways?

This is just a warning your program is compiled and should work

If you want to get ride of the warning just insert

static final long serialVersionUID = 1L;

in the instance variables of the class where the warning is issued

import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Ellipse2D;
import javax.swing.JComponent;
import java.awt.Color;
public class OlympicRingComponent extends JComponent
{
     static final long serialVersionUID = 1L;

	public void paintComponent(Graphics g)
	{