code: private void initialize() {
          this.setTitle(Constant.messages.getString("filter.changeua.title"));
          this.setContentPane(getJPanel());
  	    if (Model.getSingleton().getOptionsParam().getViewParam().getWmUiHandlingOption() == 0) {
  	    	this.setSize(375, 173);
  	    }
  	    this.setPreferredSize(new Dimension(375, 173));
          
          for (int i=0; i<FilterChangeUserAgent.userAgentName.length; i++) {
              cmbUserAgent.addItem(FilterChangeUserAgent.userAgentName[i]);
          }
  		this.pack();
  	}
docs: This method initializes this