java - JScrollPane not working with JInternalFrame -


i'm trying use jscrollpane in program. need see horizontal , vertical scroll bar when change position of internal frame.

i write code (by drag , drop) below:

package test;  public class test2 extends javax.swing.jframe {       public test2() {         initcomponents();     }      @suppresswarnings("unchecked")     // <editor-fold defaultstate="collapsed" desc="generated code">     private void initcomponents() {          jpanel1 = new javax.swing.jpanel();         jscrollpane1 = new javax.swing.jscrollpane();         jdesktoppane1 = new javax.swing.jdesktoppane();         jinternalframe1 = new javax.swing.jinternalframe();          setdefaultcloseoperation(javax.swing.windowconstants.exit_on_close);          jscrollpane1.setautoscrolls(true);          jinternalframe1.setclosable(true);         jinternalframe1.setmaximizable(true);         jinternalframe1.setresizable(true);         jinternalframe1.setvisible(true);          javax.swing.grouplayout jinternalframe1layout = new javax.swing.grouplayout(jinternalframe1.getcontentpane());         jinternalframe1.getcontentpane().setlayout(jinternalframe1layout);         jinternalframe1layout.sethorizontalgroup(             jinternalframe1layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)             .addgap(0, 424, short.max_value)         );         jinternalframe1layout.setverticalgroup(             jinternalframe1layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)             .addgap(0, 271, short.max_value)         );          jinternalframe1.setbounds(70, 50, 440, 300);         jdesktoppane1.add(jinternalframe1, javax.swing.jlayeredpane.default_layer);          jscrollpane1.setviewportview(jdesktoppane1);          javax.swing.grouplayout jpanel1layout = new javax.swing.grouplayout(jpanel1);         jpanel1.setlayout(jpanel1layout);         jpanel1layout.sethorizontalgroup(             jpanel1layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)             .addcomponent(jscrollpane1, javax.swing.grouplayout.default_size, 674, short.max_value)         );         jpanel1layout.setverticalgroup(             jpanel1layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)             .addcomponent(jscrollpane1, javax.swing.grouplayout.default_size, 491, short.max_value)         );          javax.swing.grouplayout layout = new javax.swing.grouplayout(getcontentpane());         getcontentpane().setlayout(layout);         layout.sethorizontalgroup(             layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)             .addcomponent(jpanel1, javax.swing.grouplayout.default_size, javax.swing.grouplayout.default_size, short.max_value)         );         layout.setverticalgroup(             layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)             .addcomponent(jpanel1, javax.swing.grouplayout.default_size, javax.swing.grouplayout.default_size, short.max_value)         );          pack();     }// </editor-fold>      /**      * @param args command line arguments      */     public static void main(string args[]) {         /* set nimbus , feel */         //<editor-fold defaultstate="collapsed" desc=" , feel setting code (optional) ">         /* if nimbus (introduced in java se 6) not available, stay default , feel.          * details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html           */         try {             (javax.swing.uimanager.lookandfeelinfo info : javax.swing.uimanager.getinstalledlookandfeels()) {                 if ("nimbus".equals(info.getname())) {                     javax.swing.uimanager.setlookandfeel(info.getclassname());                     break;                 }             }         } catch (classnotfoundexception ex) {             java.util.logging.logger.getlogger(test2.class.getname()).log(java.util.logging.level.severe, null, ex);         } catch (instantiationexception ex) {             java.util.logging.logger.getlogger(test2.class.getname()).log(java.util.logging.level.severe, null, ex);         } catch (illegalaccessexception ex) {             java.util.logging.logger.getlogger(test2.class.getname()).log(java.util.logging.level.severe, null, ex);         } catch (javax.swing.unsupportedlookandfeelexception ex) {             java.util.logging.logger.getlogger(test2.class.getname()).log(java.util.logging.level.severe, null, ex);         }         //</editor-fold>          /* create , display form */         java.awt.eventqueue.invokelater(new runnable() {              public void run() {                 new test2().setvisible(true);             }         });     }     // variables declaration - not modify     private javax.swing.jdesktoppane jdesktoppane1;     private javax.swing.jinternalframe jinternalframe1;     private javax.swing.jpanel jpanel1;     private javax.swing.jscrollpane jscrollpane1;     // end of variables declaration }

how do that? googled lot, either used wrong keywords or there no simple solutions on internet. hope here can me.


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