java - How to use the value of the variable from "for loop" for mouseEntered? -


how "i" variable used in "for loop" mouseentered inside panelresult[i].addmouselistener? thanks!

buttoncategory[0].addmouselistener(new mouseadapter() {          @override         public void mouseclicked(mouseevent e) {              //hidden codes here...              panelcategory.remove(scrollpane);             panelcategory.add(scrollpane);             panelarray.removeall();             panelresult = new jpanel[totalcount];             int y = 0;             for(int = 0; < panelresult.length; i++){                  panelresult[i] = new jpanel();                 panelresult[i].setlayout(null);                 panelresult[i].setbackground(new color(27, 182, 32));                 panelresult[i].setbounds(0, y, 730, 200);                 panelarray.add(panelresult[i]);                  //hidden codes here...                  panelresult[i].add(labelarrayresult);                  panelresult[i].addmouselistener(new mouseadapter() {                      @override                     public void mouseentered(mouseevent e) {                         panelresult[0].setbackground(color.black);                         //if change panelresult[i].setbackground(color.black); "i" error. want value of panelresult[i].                         revalidate();                         repaint();                     }                  });              }              revalidate();             repaint();         }              revalidate();             repaint();         }      });

i'm planning use mouseclicked , mouseexited. list of result that's why it's arrayed , looped.

the exception is:

exception in thread "awt-eventqueue-0"      java.lang.arrayindexoutofboundsexception: 7     @ ph.edu.tip.cpedepartment.cpepds.projectdesignpage$1$1.mouseentered(projectdesign‌​page.java:233)

also number of panels total count database that's why need use index. again!

i believe can use mouseevent's souce source of event:

                public void mouseentered(mouseevent e) {                     ((jpanel)e.getsource()).setbackground(color.black);                     //the index here error                     revalidate();                     repaint();                 }

if doesn't work, i'd try :

        for(int = 0; < panelresult.length; i++){              //some hidden codes here...             final jpanel panel = panelresult[i];             panel.add(labelarrayresult);              panel.addmouselistener(new mouseadapter() {                  @override                 public void mouseentered(mouseevent e) {                     panel.setbackground(color.black);                     //the index here error                     revalidate();                     repaint();                 }              });          }

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