swing - java Jbutton icon, move is okay but when I cancel the move, the source button's icon goes blank -


how code: if drop position same source position nothing.

i'm using jbuttons squares, , when moved(dragged) piece, move problem is, if drag piece on same position, meaning changed mind , decided move piece icon changes blank icon. 

    public class board extends jpanel {         private static final string imagefolderpath = "src/resources/images/";         private arraylist<piece>list = new arraylist<piece>();         private imageicon img;         private gridbagconstraints gbc;          private dragmouseadapter listener = new dragmouseadapter();         jbutton space;         jbutton p;         imageicon blankimg = new imageicon(imagefolderpath+"/pieces/blank.png");          public board(){             //set layout of each panel , make bg transparent             this.setopaque(true);             this.setbackground(new color(0,0,0,0));             this.setlayout(new gridbaglayout());             gbc = new gridbagconstraints();           //create 7x9 empty panels         for(int x = 0; x<7; x++){             for(int y = 0; y<9; y++){                  space = new jbutton(blankimg);                 space.settransferhandler(new transferhandler("icon"){                 @override                 protected void exportdone(jcomponent source, transferable data, int action) {                         if (action == move){                             system.out.print("hereup");                             if(source.getlocation() == space.getlocation()){                                 return;                             } else {                                 ((jbutton) source).seticon(blankimg);                             }                          }                     }                      @override                     public int getsourceactions(jcomponent c) {                         return copy | move;                     }                        });                 space.addmouselistener(listener);                 gbc.gridx = x;                 gbc.gridy = y;                 gbc.ipadx = 21;                 gbc.ipady = 2;                 this.add(space,gbc,0);                             }         }       ///create pieces , put them on board             for(int i=0; i<list.size(); i++){             img = new imageicon(imagefolderpath+"/pieces/"+list.get(i).getimg());             p = new jbutton(img);             p.settransferhandler(new transferhandler("icon"){                 @override                 protected void exportdone(jcomponent source, transferable data, int action) {                     if (action == move){                             if(source.getlocation() == p.getlocation()){                                 return;                             } else {                                 ((jbutton) source).seticon(blankimg);                             }                         }                 }                  @override                 public int getsourceactions(jcomponent c) {                     return copy | move;                 }                    });             p.addmouselistener(listener);             gbc.gridx = list.get(i).getx();             gbc.gridy = list.get(i).gety();             gbc.ipadx = 21;             gbc.ipady = 2;                 this.add(p,gbc,0);         }             }        class dragmouseadapter extends mouseadapter {         @override         public void mousepressed(mouseevent e) {             jcomponent c = (jcomponent) e.getsource();             transferhandler handler = c.gettransferhandler();             handler.exportasdrag(c, e, transferhandler.move);                   }     } } 

if(source.getlocation() == space.getlocation())

guess should use equals() instead of ==


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