thread

			Runnable firstRun = new Runnable(){
                @Override
                public void run(){
                    try{
					for (int x = 100; x <= 1024; x+=100) {
            		graphics.setColor(Color.red);
            		graphics.drawOval(x, 100, 200, 200);
                	Thread.sleep(1000);
            		graphics.setColor(Color.white);
            		graphics.drawOval(x, 100, 200, 200);
        			}
                    }catch(InterruptedException ex){
                        ex.printStackTrace();
                    }
                }
            };
            Thread firstThread = new Thread(firstRun );

			Runnable secondRun= new Runnable(){
                @Override
                public void run(){
                    try{
					for (int x = 100; x <= 1024; x+=100) {
            		graphics.setColor(Color.red);
            		graphics.drawOval(x, 100, 200, 200);
                	Thread.sleep(1000);
            		graphics.setColor(Color.white);
            		graphics.drawOval(x, 100, 200, 200);
        			}
                    }catch(InterruptedException ex){
                        ex.printStackTrace();
                    }
                }
            };
            Thread secondThread = new Thread(secondRun);

			Runnable thirdRun= new Runnable(){
                @Override
                public void run(){
                    try{
					for (int x = 100; x <= 1024; x+=100) {
            		graphics.setColor(Color.red);
            		graphics.drawOval(x, 100, 200, 200);
                	Thread.sleep(1000);
            		graphics.setColor(Color.white);
            		graphics.drawOval(x, 100, 200, 200);
        			}
                    }catch(InterruptedException ex){
                        ex.printStackTrace();
                    }
                }
            };
            Thread thirdThread= new Thread(thirdRun);
            firstThread.start();
            secondThread.start();
            thirdThread.start();