Java-Programming-Exercises/SimpleAnimation.java at master · RoyTien/Java-Programming-Exercises · GitHub

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import javax.swing.*;

import java.awt.*;

public class SimpleAnimation{

int x = 70;

int y = 70;

public static void main(String[] args){

SimpleAnimation gui = new SimpleAnimation();

gui.go();

}

public void go(){

JFrame frame = new JFrame();

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

MyDrawPanel drawPanel = new MyDrawPanel();

frame.getContentPane().add(drawPanel);

frame.setSize(600,600);

frame.setVisible(true);

for(int i = 0; i < 400; i++){

x++;

y++;

drawPanel.repaint();

try{

Thread.sleep(50);

}catch(Exception ex){ }

}

class MyDrawPanel extends JPanel{

public void paintComponent(Graphics g){

Graphics2D g2d = (Graphics2D) g;

g.setColor(Color.white);

g.fillRect(0,0,this.getWidth(),this.getHeight());

int myRed = (int)(Math.random() * 255);

int myGreen = (int)(Math.random() * 255);

int myBlue = (int)(Math.random() * 255);

Color startColor = new Color(myRed,myGreen,myBlue);

myRed = (int)(Math.random() * 255);

myGreen = (int)(Math.random() * 255);

myBlue = (int)(Math.random() * 255);

Color endColor = new Color(myRed,myGreen,myBlue);

GradientPaint gradient = new GradientPaint(70,70,startColor,150,150,endColor);

g2d.setPaint(gradient);

g2d.fillOval(x,y,100,100);

}

Java-Programming-Exercises/SimpleAnimation.java at master · RoyTien/Java-Programming-Exercises · GitHub

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