title: I am not able to solve java.lang.UnsupportedOperationException: Not supported yet exception
body: <p>In the programs given below, I have implemented actionlistener on "a" whereby when a click event occurs on button "H" new window asking coordinates should appear but I am getting</p>
  
  <blockquote>
    <p>java.lang.UnsupportedOperationException: Not supported yet exception</p>
  </blockquote>
  
  <p>I would appreciate any suggestions to it. I have included two classes.</p>
  
  <pre><code>// class:TextEditor.java
  
  import java.awt.event.ActionListener;
  import java.awt.*;
  import java.awt.event.*;
  import java.io.*;
  import javax.swing.*;
  import static javax.swing.JFrame.EXIT_ON_CLOSE;
  import javax.swing.text.*;
  
  public class TextEditor extends JFrame {
  static int fn=0;
  private JTextArea area = new JTextArea(20,120);
  //TextEditor frm = new TextEditor(10,10);
  
      private JFileChooser dialog = new JFileChooser(System.getProperty("user.dir"));
      private String currentFile = "Untitled";
      private boolean changed = false;
          private JButton a = new JButton("H");
          private JButton b = new JButton("HE");
          private JButton c = new JButton("O");
  
  public TextEditor() {
                  setLayout( new FlowLayout() );
          area.setFont(new Font("Monospaced",Font.PLAIN,12));
          JScrollPane scroll = new JScrollPane(area,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
          add(scroll,BorderLayout.CENTER);
                  add(a);// add the button to the JFrame
                  add(b); 
                  add(c);
          JMenuBar JMB = new JMenuBar();
          setJMenuBar(JMB);
          JMenu file = new JMenu("File");
          JMenu edit = new JMenu("Edit");
          JMB.add(file); JMB.add(edit);
  
                  a.addActionListener(new ActionListener() { 
                  public void actionPerformed(ActionEvent e) { 
                       CircleComponent a1 = new CircleComponent();
                  a1.a2();
                  selectionButtonPressed();
                      } 
  
                      private void selectionButtonPressed() {
                          throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
                      }
                  } );
                  file.add(New);
                  file.add(Open);
                  file.add(Save);
                  file.add(SaveAs);
          file.add(Quit);
                  file.addSeparator();
  
          for(int i=0; i&lt;4; i++)
              file.getItem(i).setIcon(null);
  
          edit.add(Cut);
                  edit.add(Copy);
                  edit.add(Paste);
  
          edit.getItem(0).setText("Cut out");
          edit.getItem(1).setText("Copy");
          edit.getItem(2).setText("Paste");
  
  JToolBar tool = new JToolBar();
          add(tool,BorderLayout.NORTH);
          tool.add(New);
                  tool.add(Open);tool.add(Save);
          tool.addSeparator();
  
          JButton cut = tool.add(Cut), cop = tool.add(Copy),pas = tool.add(Paste);
  
          cut.setText(null); cut.setIcon(new ImageIcon("cut.gif"));
          cop.setText(null); cop.setIcon(new ImageIcon("copy.gif"));
          pas.setText(null); pas.setIcon(new ImageIcon("paste.gif"));
  
          //Save.setEnabled(false);
          //SaveAs.setEnabled(false);
  
          setDefaultCloseOperation(EXIT_ON_CLOSE);
          pack();
          area.addKeyListener(k1);
          setTitle(currentFile);
          setVisible(true);
      }
  private KeyListener k1 = new KeyAdapter() {
          public void keyPressed(KeyEvent e) {
              changed = true;
              Save.setEnabled(true);
              SaveAs.setEnabled(true);
          }
      };
  Action New = new AbstractAction("New", new ImageIcon("new.gif")) {
          public void actionPerformed(ActionEvent e) {
              saveOld();
              currentFile = "Untitled";
                          setTitle(currentFile);
                          changed = false;
                          area.setText(null);
                  }
      };
  Action Open = new AbstractAction("Open", new ImageIcon("open.gif")) {
          public void actionPerformed(ActionEvent e) {
              saveOld();
              if(dialog.showOpenDialog(null)==JFileChooser.APPROVE_OPTION) {
                  readInFile(dialog.getSelectedFile().getAbsolutePath());
              }
              SaveAs.setEnabled(true);
          }
      };
  Action Save = new AbstractAction("Save", new ImageIcon("save.gif")) {
          public void actionPerformed(ActionEvent e) {
              if(!currentFile.equals("Untitled"))
                  saveFile(currentFile);
              else
                  saveFileAs();
          }
      };
  Action SaveAs = new AbstractAction("Save as...") {
          public void actionPerformed(ActionEvent e) {
              saveFileAs();
          }
      };
  Action Quit = new AbstractAction("Quit") {
          public void actionPerformed(ActionEvent e) {
              saveOld();
              System.exit(0);
          }
      };
          private TextEditor(int i, int i0) {
          throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
      }
    ActionMap m = area.getActionMap();
      Action Cut = m.get(DefaultEditorKit.cutAction);
      Action Copy = m.get(DefaultEditorKit.copyAction);
      Action Paste = m.get(DefaultEditorKit.pasteAction);
  
  private void saveFileAs() {
          if(dialog.showSaveDialog(null)==JFileChooser.APPROVE_OPTION)
              saveFile(dialog.getSelectedFile().getAbsolutePath());
      }
  private void saveOld() {
          if(changed) {
              if(JOptionPane.showConfirmDialog(this, "Would you like to save "+ currentFile +" ?","Save",JOptionPane.YES_NO_OPTION)== JOptionPane.YES_OPTION)
                  saveFile(currentFile);
          }
      }
  private void readInFile(String fileName) {
          try {
              FileReader r = new FileReader(fileName);
              area.read(r,null);
              r.close();
              currentFile = fileName;
              setTitle(currentFile);
              changed = false;
          }
          catch(IOException e) {
              Toolkit.getDefaultToolkit().beep();
              JOptionPane.showMessageDialog(this,"Editor can't find the file called "+fileName);
          }
      }
  private void saveFile(String fileName) {
          try {
              FileWriter w = new FileWriter(fileName);
              area.write(w);
              w.close();
              currentFile = fileName;
              setTitle(currentFile);
              changed = false;
              Save.setEnabled(false);
          }
          catch(IOException e) {
          }
      }
  public  static void main(String[] arg) {
          new TextEditor();
      }
  
      private void setsize(int i, int i0) {
          throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
      }
  
      private void a() {
          throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
      }
  
      private void a2() {
          throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
      }
  
  }
  
  //circlecomponent
  
  import java.awt.event.ActionListener;
  import java.awt.event.*;
  import java.awt.geom.*;
  import javax.swing.*;
  import java.awt.*;
  
  public class CircleComponent extends JPanel
  {
         Ellipse2D.Double circle;
  
         public CircleComponent(int radius)
         {
             circle = new Ellipse2D.Double(0, 0, radius, radius);
             setOpaque(false);
         }
  
      CircleComponent() {
          throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
      }
  
         public Dimension getPreferredSize()
         {
              Rectangle bounds = circle.getBounds();
             return new Dimension(bounds.width, bounds.height);
         }
  
         public void paintComponent(Graphics g)
         {
             super.paintComponent(g);
             Graphics2D g2 = (Graphics2D) g;
             g2.setColor( getForeground() );
             g2.fill(circle);
  
         }
  /*
         public int getWidth(int aWidth)
         {
              width = aWidth;
              return width;
         }
  */
  
      public void  a2()
      {
              //  Create a panel using a null layout so we can add components at random positions
              final JPanel center = new JPanel();
              center.setLayout(null);
  
                JButton button = new JButton("Draw");
                button.addActionListener( new ActionListener()
                {
                   public void actionPerformed(ActionEvent event)
                   {
                       String x = JOptionPane.showInputDialog("X Coordinate", "Enter an x coordinate");
                         try{
                       int xCoord = Integer.parseInt(x);
                       String y = JOptionPane.showInputDialog("Y Coordinate", "Enter a y coordinate");
                       int yCoord = Integer.parseInt(y);
                       String width = JOptionPane.showInputDialog("Radius", "Enter the length of the radius");
                       int radius = Integer.parseInt(width);
                       CircleComponent component = new CircleComponent(radius);
                       component.setLocation(xCoord,yCoord);
                       component.setSize(component.getPreferredSize());
                       center.add(component);
                       center.repaint();
                       }catch(NumberFormatException ex){  
  
          System.err.println("Ilegal input");
                   }
                   }
                });
  
                JFrame frame = new JFrame();
                frame.add(center, BorderLayout.CENTER);
                frame.add(button, BorderLayout.NORTH);
                frame.setSize(500, 500);
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setVisible(true);
      }
  
      void addActionListener() {
          throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
      }
  
      void addActionListener(ActionListener actionListener) {
          throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
      }
  
   /*   CircleComponent() {
          throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
      }
  
      CircleComponent() {
          throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
      }
  
      CircleComponent() {
          throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
      }*/
  }
  </code></pre>