import javax.swing.*;
import java.awt.*;
import java.util.Random;
public class SleepMethodTest extends JFrame {
private Thread t;
private static Color[] color={Color.BLACK,Color.BLUE,Color.cyan,Color.GREEN,Color.ORANGE,Color.ORANGE,
Color.YELLOW,Color.RED,Color.PINK,Color.LIGHT_GRAY
};
private static final Random rand =new Random();
private static Color getC(){
return color[rand.nextInt(color.length)];
}
public SleepMethodTest(){
t=new Thread(new Runnable() {
int x=30;
int y=50;
public void run() {
while (true){
try {
Thread.sleep(300);
} catch (InterruptedException e) {
e.printStackTrace();
}
Graphics graphics =getGraphics();
graphics.setColor(getC());
graphics.drawLine(x,y,1500,y++);
if(y>=180){
y=50;
}
}
}
});
t.start();
}
public static void main(String[] args){
init(new SleepMethodTest(),100,100);
}
public static void init(JFrame frame,int width,int height){
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(width,height);
frame.setVisible(true);
}
}