java - How to put two different tasks in Threads -

i have following code. in code have image moves left right , button has event. want put these both tasks in threads. can work properly. problem code button event not work until reaches right point.

import java.awt.*; import java.awt.event.*; import javax.swing.*;  class myimage extends jframe implements actionlistener {    static int xpixel = 20;    image myimage, offscreenimage;    graphics offscreengraphics;    jpanel p = new jpanel();    button btn = new button("bun");    jframe f = new jframe();      public myimage()    {       myimage = toolkit.getdefaulttoolkit().getimage("mywineshoplogo.jpg");       setextendedstate(jframe.maximized_both);       this.setdefaultcloseoperation(jframe.exit_on_close);       setvisible(true);       add(p);       p.add(btn);       moveimage();       btn.addactionlistener(this);    }     public void update(graphics g)    {       paint(g);    }     public void paint(graphics g)    {       int width = getwidth();       int height = getheight();       if (offscreenimage == null)       {          offscreenimage = createimage(width, height);          offscreengraphics = offscreenimage.getgraphics();       } // clear off screen image         offscreengraphics.clearrect(0, 0, width + 1, height + 1); // draw image off screen         offscreengraphics.drawimage(myimage, xpixel, 10, this); // draw image off screen   // show off screen image         g.drawimage(offscreenimage, 0, 0, this); // show off screen image      }     void moveimage()   //left right move    {   thread hilo = new thread() {    public void run() {  try {        (int = 0; < 530; i++)       {           xpixel += 1;          repaint();         // sleep bit animation            try          {             thread.sleep(4);          } /* pause 50 milliseconds */           catch (interruptedexception e)          {             system.err.println("sleep exception");          }       }   } //try   catch (exception ex) {       // something...   }   }   };   hilo.start();    }  /*   void moveimg()   // right left move    {       (int = 529; > 0; i--)       {          if (i == 1)          {             moveimage();          }          xpixel -= 1;          repaint(); // sleep bit animation            try          {             thread.sleep(40);          } // pause 50 milliseconds            catch (interruptedexception e)          {             system.err.println("sleep exception");           }       }     } */          public void actionperformed(actionevent ae)    {       try       {          if (ae.getsource() == btn)          {             p.setbackground(color.red);          }       }       catch (exception e)       {          system.out.println("error");       }    }     public static void main(string args[])    {       myimage me = new myimage();    } } 

whenever write thread.sleep in gui code, stop , introduce task scheduled on swing's timer. need code: schedule each update separate scheduled task on timer. timer quite simple , straightforward use, see example this official oracle tutorial.