Java Swing Scrolling By Dragging the Mouse -

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i trying create hand scroller scroll drag mouse across jpanel. far cannot view change. here code:

import java.awt.*; import java.awt.event.*;  import javax.swing.*;   public class handscroller extends jframe {      public static void main(string[] args) {         new handscroller();     }      public handscroller() {         setdefaultcloseoperation(exit_on_close);           final jpanel background = new jpanel();         background.add(new jlabel("hand"));         background.add(new jlabel("scroller"));         background.add(new jlabel("test"));         background.add(new jlabel("click"));         background.add(new jlabel("to"));         background.add(new jlabel("scroll"));          final jscrollpane scrollpane = new jscrollpane(background);          mouseadapter mouseadapter = new mouseadapter() {             @override             public void mousepressed(mouseevent e) {                 jviewport viewport = scrollpane.getviewport();                 point vpp = viewport.getviewposition();                 vpp.translate(10, 10);                 background.scrollrecttovisible(new rectangle(vpp, viewport.getsize()));             }         };          scrollpane.getviewport().addmouselistener(mouseadapter);         scrollpane.getviewport().addmousemotionlistener(mouseadapter);          setcontentpane(scrollpane);         pack();         setlocationrelativeto(null);         setvisible(true);     }  }

i think move view 10 in x , y directions, not doing @ all. there more should doing?

thanks.

your code work. simply, there nothing scroll, window large enough (actually, pack() has caused jframe resize to fit preferred size , layouts of subcomponents)

remove pack(); , replace line with, say, setsize(60,100); see effect.


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