title: Java GUI BorderLayout application 4 buttons Left, right, up and down each move location
body: <p>I have been breaking my head for days over a project I have to do in my Java beginner class about GUI <code>BorderLayout</code> <code>Jbutton</code> and I really hope some one here can help me out to understand it or shed some light. My task is to create a <code>BorderLayout</code> window with 4 button left right up and down
  Each button moves the window/ <code>Borderlayout</code> 20 pixel left or right or up or down.
  I have already created a code with the buttons but I do not to know how to make the buttons move and above all I must not allow the Window to move out/ disappear from the desktop. Please be patient with me I am totally fresh student.
  Here is my code so far:</p>
  
  <pre><code>import java.awt.*;
  import javax.swing.*;
  
  public class WindowBorder extends JFrame {
  
      private static final long serialVersionUID = 1L;
      private int x, y; //the coordinates for moving in the screen 
  
      public WindowBorder (String titel){
          super (titel);
          //create the buttons and the layout and add the buttons 
          JButton right = new JButton ("Right"); 
          JButton left = new JButton ("Left"); 
          JButton up = new JButton ("Up"); 
          JButton down = new JButton ("Down"); 
          //JButton center = new JButton ("Default"); hide the middle button 
  
          setLayout (new BorderLayout (75,75));
          add(BorderLayout.EAST,right);
          add(BorderLayout.WEST,left);
          add(BorderLayout.NORTH,up);
          add(BorderLayout.SOUTH,down);
  
          //add(BorderLayout.CENTER,default); hide the middle button 
  
          //I must create the inner class with the constructors for the task project for school 
          class WindowBorderInner implements ActionListener {
              @Override
              public void actionPerformed (ActionEvent e){
  
                  if(e.getActionCommand().equals("right"))
                  //this is the part that I am lost :(
              }
          }
  
          //configuration the size and the location of the Border layout 
          setSize (400,400);
  
          setLocationByPlatform (true);
          setVisible(true);
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      }
  
  
      public static void main(String [] arg){ //the test method 
          new WindowBorder("Move Window");
          }
      }
  </code></pre>