[ [[tutorial-en-001 | Intro]]    | [[tutorial-en-002 | Begin]] |
[[tutorial-en-003 | if/else]]    | [[tutorial-en-004 | Loops]] |
[[tutorial-en-005 | Arrays]]     | [[tutorial-en-006 | Graphics]] |
[[tutorial-en-007 | Animation]]  | [[tutorial-en-008 | Mouse]] |
[[tutorial-en-009 | Game]]       | [[tutorial-en-010 | Real]] |
[[tutorial-en-011 | Methods]]    | [[tutorial-en-012 | Class]] |
[[tutorial-en-013 | Class 2]]    | [[tutorial-en-014 | Applet]] |
[[tutorial-en-015 | MouseClick]] | [[tutorial-en-016 | Thread]] |
[[tutorial-en-017 | Button]]     ]
----
====== Simple Java Animation Using Threads ======
<code java>
    import java.awt.*;
    import java.applet.*;
    public class TestAnim1 extends Applet implements Runnable {
	// Declare a Thread object
	Thread count;
	int x;
	int y;

	// initialize applet
	public void init()
	{
	    x = 0;
	    y = 20;
	    setBackground(Color.yellow);

	    // init thread
	    count = new Thread(this);

	    // start the thread
	    count.start();
	}

	// Thread code, overrides run method of Runnable
	public void run()
	{
	    while (true) {
	        try {
		    // delay
	            count.sleep(100);
	            x++;

	            // call paint method
	            repaint();
	        }
		catch(Exception e) {} // do nothing
	    }
	}

	// paint method
	public void paint(Graphics g) {
	    g.setColor(Color.green);
	    g.fillOval(x, y, 30, 30);
	}
    }
</code>