Java implementation Click a control to implement a method to delete a control

Recently, when doing a project, you need to deal with clicking on a JLabel implementation to remove this JLabel feature. Recently tortured a little time to check the API. 2 methods were found to implement this function.

Remove

Remove (Component comp)

removes the specified component from the container. If comp not rootPane , the call is forwarded to the contentPane .  If comp it is not JFrame or contentPane a child, no action is taken.

Repaint

Repaint (long time,                    int x,                    int y,                    int width,                    int height)

time redraws The specified rectangular area of this component within milliseconds.

the code to implement this function is as follows:

1  PackageQq.client.tools;2 ImportJava.awt.Frame;3 Importjava.awt.event.MouseEvent;4 ImportJava.awt.event.MouseListener;5 ImportJavax.swing.JLabel;6 /**7 * Realize click on a jlabel to delete a jlabel small function8  * @authorAdministrator9  *Ten  */ One  Public classTest { A   -   Public Static voidMain (string[] args) { -   the    FinalFrame frame =NewFrame ();//Create Window -Frame.setsize (800, 600); -Frame.setlayout (NULL); -    +JLabel BTN =NULL;//Monitor -JLabel b=NULL; +BTN =NewJLabel ("btn");//Create BTN, add monitoring ABtn.addmouselistener (NewMouseListener () { at @Override -      Public voidmousereleased (MouseEvent e) { -         //TODO auto-generated Method Stub -          -     } -      in @Override -      Public voidmousepressed (MouseEvent e) { to         //TODO auto-generated Method Stub +          -     } the      * @Override $      Public voidmouseexited (MouseEvent e) {Panax Notoginseng         //TODO auto-generated Method Stub -          the     } +      A @Override the      Public voidmouseentered (MouseEvent e) { +         //TODO auto-generated Method Stub -          $     } $      - @Override -      Public voidmouseclicked (MouseEvent e) { the         //TODO auto-generated Method Stub -         if(E.getclickcount () ==1) {//Click ThingsWuyiJLabel sourcebtn = (JLabel) e.getsource ();//get the Event source object (click Btn) the Frame.remove (SOURCEBTN); -               frame.repaint (); Wu         } -     } About }); $ Frame.add (BTN); -Btn.setbounds (50, 50, 50, 50); -Frame.setvisible (true); -            } A}

The entire function is realized. Be careful not to add frame.repaint (); This code will not be refreshed in time. You need to minimize the window or maximize (I think the refresh requires a user action to refresh) window to automatically refresh. Add Frame.repaint (); it will be refreshed in time.

Java implementation Click a control to implement a method to delete a control