Java - Thread

burkan.java

import javax.swing.*;
public class burkan {
 public static void main(String[] args){
   
  
 Thread t1 = new Thread(new threads(300,300,1500));
 Thread t2 = new Thread(new threads(250,250,3500));
 Thread t3 = new Thread(new threads(200,200,6500));
 Thread t4 = new Thread(new threads(100,100,8500));
 Thread t5 = new Thread(new threads(50,50,10500));
   
 t1.start();
 t2.start();
 t3.start();
 t4.start();
 t5.start();
 }
}

graphics.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class graphics extends JPanel{
 private int a,b;
 public graphics(int i, int j) {
   //constructor
   a=i;
   b=j;
 }

 public void paintComponent(Graphics g){
 super.paintComponents(g);
 this.setBackground(Color.WHITE);
   
 g.setColor(Color.blue);
 g.drawRect(100,100, a, b);
    
  }
    
  
   
  
}

threads.java

import java.util.*;
import java.awt.*;
import javax.swing.*;
 public class threads implements Runnable{
 private int x,y;
 public int time;
 public JFrame f = new JFrame("LOOP");
 
 public threads(int a,int b,int t){
  //constructor
  x=a;
  y=b;
  time = t;
  
 }
 
 
    public void run(){
     
     try{
      Thread.sleep(time);
   graphics p = new graphics(x,y);

   f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   f.setSize(800,600);
   f.setVisible(true);
   f.add(p);
     
     }catch(Exception e){}
     
    }
}