public void keyReleased(KeyEvent e){
	    
        JTextField source = (JTextField)e.getSource();
        String textToSearch = source.getText();
.
.
.
.

  private void jbInit() throws Exception
  {
    this.getContentPane().setLayout(null);
    this.setSize(new Dimension(400, 300));
    jTextArea1.setText("Test");
    jTextArea1.setBounds(new Rectangle(40, 40, 225, 60));
    jTextArea1.setForeground(Color.red);
    jButton1.setText("jButton1");
    jButton1.setBounds(new Rectangle(95, 175, 73, 22));
    jButton1.addActionListener(new ActionListener()
      {
        public void actionPerformed(ActionEvent e)
        {
          jButton1_actionPerformed(e);
        }
      });
    this.getContentPane().add(jButton1, null);
    this.getContentPane().add(jTextArea1, null);
  }
 
  private void jButton1_actionPerformed(ActionEvent e)
  {
    JOptionPane.showMessageDialog(null, jTextArea1.getText());
  }