code: private void initialize() {
          this.setTitle(Constant.messages.getString("history.managetags.title"));
          this.setContentPane(getJPanel());
          if (Model.getSingleton().getOptionsParam().getViewParam().getWmUiHandlingOption() == 0) {
          	this.setSize(panelWidth, panelHeight);
          }
          this.addWindowListener(new java.awt.event.WindowAdapter() {   
          	@Override
          	public void windowOpened(java.awt.event.WindowEvent e) {    
          	} 
  
          	@Override
          	public void windowClosing(java.awt.event.WindowEvent e) {
          	}
          });
  
  		pack();
  	}
docs: This method initializes this