Program: 21450
Project: 21450
Buggy source:
/** 
 * Hier wird die komplette Oberfläche der Applikation zusammengestrickt
 */
private void buildUI(){
  tabDownloadTable=new TabDownloadLinks(this);
  tabPluginActivity=new TabPluginActivity();
  statusBar=new StatusBar();
  splitpane=new JSplitPane();
  splitpane.setBottomComponent(tabPluginActivity);
  splitpane.setTopComponent(tabDownloadTable);
  splitpane.setOrientation(JSplitPane.VERTICAL_SPLIT);
  btnStartStop=new JToggleButton(actionStartStopDownload);
  btnStartStop.setSelectedIcon(new ImageIcon(JDUtilities.getImage("String_Node_Str")));
  btnStartStop.setFocusPainted(false);
  btnStartStop.setBorderPainted(false);
  btnStartStop.setText(null);
  JButton btnAdd=new JButton(actionAdd);
  btnAdd.setFocusPainted(false);
  btnAdd.setBorderPainted(false);
  btnAdd.setText(null);
  JButton btnDelete=new JButton(actionDelete);
  btnDelete.setFocusPainted(false);
  btnDelete.setBorderPainted(false);
  btnDelete.setText(null);
  JButton btnConfig=new JButton(this.actionConfig);
  btnConfig.setFocusPainted(false);
  btnConfig.setBorderPainted(false);
  btnConfig.setText(null);
  JButton btnReconnect=new JButton(this.actionReconnect);
  btnReconnect.setFocusPainted(false);
  btnReconnect.setBorderPainted(false);
  btnReconnect.setText(null);
  JButton btnUpdate=new JButton(this.actionUpdate);
  btnUpdate.setFocusPainted(false);
  btnUpdate.setBorderPainted(false);
  btnUpdate.setText(null);
  JButton btnSave=new JButton(this.actionSaveLinks);
  btnSave.setFocusPainted(false);
  btnSave.setBorderPainted(false);
  btnSave.setText(null);
  JButton btnLoad=new JButton(this.actionLoadLinks);
  btnLoad.setFocusPainted(false);
  btnLoad.setBorderPainted(false);
  btnLoad.setText(null);
  JButton btnLog=new JButton(this.actionLog);
  btnLog.setFocusPainted(false);
  btnLog.setBorderPainted(false);
  btnLog.setText(null);
  JButton btnDnD=new JButton(this.actionDnD);
  btnDnD.setFocusPainted(false);
  btnDnD.setBorderPainted(false);
  btnDnD.setText(null);
  JButton btnSearch=new JButton(this.actionSearch);
  btnSearch.setFocusPainted(false);
  btnSearch.setBorderPainted(false);
  btnSearch.setText(null);
  toolBar.setFloatable(false);
  toolBar.add(btnLoad);
  toolBar.add(btnSave);
  toolBar.addSeparator();
  toolBar.add(btnStartStop);
  toolBar.add(btnAdd);
  toolBar.add(btnDelete);
  toolBar.add(btnSearch);
  toolBar.addSeparator();
  toolBar.add(btnUpdate);
  toolBar.addSeparator();
  toolBar.add(btnConfig);
  toolBar.add(btnLog);
  toolBar.addSeparator();
  toolBar.add(btnReconnect);
  toolBar.add(btnDnD);
  reconnectBox=new JCheckBox("String_Node_Str");
  reconnectBox.setSelected(true);
  reconnectBox.addActionListener(this);
  toolBar.add(reconnectBox);
  frame.setLayout(new GridBagLayout());
  JDUtilities.addToGridBag(frame,toolBar,0,0,1,1,0,0,null,GridBagConstraints.HORIZONTAL,GridBagConstraints.NORTH);
  JDUtilities.addToGridBag(frame,splitpane,0,1,1,1,1,1,null,GridBagConstraints.BOTH,GridBagConstraints.CENTER);
  JDUtilities.addToGridBag(frame,statusBar,0,2,1,1,0,0,null,GridBagConstraints.HORIZONTAL,GridBagConstraints.WEST);
  logDialog=new LogDialog(frame,logger);
  logDialog.addWindowListener(new LogDialogWindowAdapter());
}

Fixed version (ground truth):
/** 
 * Hier wird die komplette Oberfläche der Applikation zusammengestrickt
 */
private void buildUI(){
  tabDownloadTable=new TabDownloadLinks(this);
  tabPluginActivity=new TabPluginActivity();
  statusBar=new StatusBar();
  splitpane=new JSplitPane();
  splitpane.setBottomComponent(tabPluginActivity);
  splitpane.setTopComponent(tabDownloadTable);
  splitpane.setOrientation(JSplitPane.VERTICAL_SPLIT);
  btnStartStop=new JToggleButton(actionStartStopDownload);
  btnStartStop.setSelectedIcon(new ImageIcon(JDUtilities.getImage("String_Node_Str")));
  btnStartStop.setFocusPainted(false);
  btnStartStop.setBorderPainted(false);
  btnStartStop.setText(null);
  JButton btnAdd=new JButton(actionAdd);
  btnAdd.setFocusPainted(false);
  btnAdd.setBorderPainted(false);
  btnAdd.setText(null);
  JButton btnDelete=new JButton(actionDelete);
  btnDelete.setFocusPainted(false);
  btnDelete.setBorderPainted(false);
  btnDelete.setText(null);
  JButton btnConfig=new JButton(this.actionConfig);
  btnConfig.setFocusPainted(false);
  btnConfig.setBorderPainted(false);
  btnConfig.setText(null);
  JButton btnReconnect=new JButton(this.actionReconnect);
  btnReconnect.setFocusPainted(false);
  btnReconnect.setBorderPainted(false);
  btnReconnect.setText(null);
  JButton btnUpdate=new JButton(this.actionUpdate);
  btnUpdate.setFocusPainted(false);
  btnUpdate.setBorderPainted(false);
  btnUpdate.setText(null);
  JButton btnSave=new JButton(this.actionSaveLinks);
  btnSave.setFocusPainted(false);
  btnSave.setBorderPainted(false);
  btnSave.setText(null);
  JButton btnLoad=new JButton(this.actionLoadLinks);
  btnLoad.setFocusPainted(false);
  btnLoad.setBorderPainted(false);
  btnLoad.setText(null);
  JButton btnLog=new JButton(this.actionLog);
  btnLog.setFocusPainted(false);
  btnLog.setBorderPainted(false);
  btnLog.setText(null);
  JButton btnDnD=new JButton(this.actionDnD);
  btnDnD.setFocusPainted(false);
  btnDnD.setBorderPainted(false);
  btnDnD.setText(null);
  JButton btnSearch=new JButton(this.actionSearch);
  btnSearch.setFocusPainted(false);
  btnSearch.setBorderPainted(false);
  btnSearch.setText(null);
  toolBar.setFloatable(false);
  toolBar.add(btnLoad);
  toolBar.add(btnSave);
  toolBar.addSeparator();
  toolBar.add(btnStartStop);
  toolBar.add(btnAdd);
  toolBar.add(btnDelete);
  toolBar.add(btnSearch);
  toolBar.addSeparator();
  toolBar.add(btnUpdate);
  toolBar.addSeparator();
  toolBar.add(btnConfig);
  toolBar.add(btnLog);
  toolBar.addSeparator();
  toolBar.add(btnReconnect);
  toolBar.add(btnDnD);
  reconnectBox=new JCheckBox("String_Node_Str");
  boolean rc=JDUtilities.getConfiguration().getBooleanProperty(Configuration.PARAM_DISABLE_RECONNECT,true);
  reconnectBox.setSelected(rc);
  HTTPReconnect.setEnabled(rc);
  ExternReconnect.setEnabled(rc);
  reconnectBox.addActionListener(this);
  toolBar.add(reconnectBox);
  frame.setLayout(new GridBagLayout());
  JDUtilities.addToGridBag(frame,toolBar,0,0,1,1,0,0,null,GridBagConstraints.HORIZONTAL,GridBagConstraints.NORTH);
  JDUtilities.addToGridBag(frame,splitpane,0,1,1,1,1,1,null,GridBagConstraints.BOTH,GridBagConstraints.CENTER);
  JDUtilities.addToGridBag(frame,statusBar,0,2,1,1,0,0,null,GridBagConstraints.HORIZONTAL,GridBagConstraints.WEST);
  logDialog=new LogDialog(frame,logger);
  logDialog.addWindowListener(new LogDialogWindowAdapter());
}