PPT Slide

J.62

/* The run method changes the value of xpos AND

repaints the screen after a pause of 100 milliseconds */

public void run() {

/* Moving xpos from left to right */

while (true) {

for (xpos = 5; xpos <=105; xpos +=4)

{

repaint();

try {Thread.sleep(100); }

catch (InterruptedException e) {}

}

/* Moving xpos from right to left */

for (xpos = 105; xpos > 5; xpos -=4)

{

repaint();

try {Thread.sleep(100); }

catch (InterruptedException e) {}

}

}

}

Why does run have to go to sleep ?

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