Program: 134814
Project: 134814
Buggy source:
private void createDelPropWindow(){
  if (frame != null) {
    return;
  }
  JLabel delLabel=new JLabel("String_Node_Str");
  jcombo=new JComboBox();
  frame=new JFrame("String_Node_Str");
  JPanel panel=new JPanel(new BorderLayout(5,5));
  JButton delButton=new JButton("String_Node_Str");
  for (  DataPrinter wp : samplers) {
    jcombo.addItem(wp.component + "String_Node_Str" + wp.property);
  }
  delButton.addActionListener(new java.awt.event.ActionListener(){
    public void actionPerformed(    ActionEvent e){
      String comProp[]=new String[2];
      comProp=jcombo.getSelectedItem().toString().split("String_Node_Str");
      removeSamp(comProp[0],comProp[1]);
      jcombo.removeItemAt(jcombo.getSelectedIndex());
      addToStatusComboBox(comProp[0] + "String_Node_Str" + comProp[1]+ "String_Node_Str");
    }
  }
);
  delLabel.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
  panel.add(delLabel,BorderLayout.NORTH);
  jcombo.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
  panel.add(jcombo,BorderLayout.CENTER);
  delButton.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
  panel.add(delButton,BorderLayout.EAST);
  frame.add(panel);
  frame.pack();
  frame.setVisible(true);
  frame.addWindowListener(new java.awt.event.WindowListener(){
    @Override public void windowActivated(    WindowEvent e){
    }
    @Override public void windowClosed(    WindowEvent e){
    }
    @Override public void windowClosing(    WindowEvent e){
    }
    @Override public void windowDeactivated(    WindowEvent e){
      frame=null;
    }
    @Override public void windowDeiconified(    WindowEvent e){
    }
    @Override public void windowIconified(    WindowEvent e){
    }
    @Override public void windowOpened(    WindowEvent e){
    }
  }
);
}

Fixed version (ground truth):
private void createDelPropWindow(){
  if (frame != null) {
    return;
  }
  JLabel delLabel=new JLabel("String_Node_Str");
  jcombo=new JComboBox();
  frame=new JFrame("String_Node_Str");
  JPanel panel=new JPanel(new BorderLayout(5,5));
  JButton delButton=new JButton("String_Node_Str");
  for (  DataPrinter wp : samplers) {
    jcombo.addItem(wp.component + "String_Node_Str" + wp.property);
  }
  delButton.addActionListener(new java.awt.event.ActionListener(){
    public void actionPerformed(    ActionEvent e){
      String comProp[]=new String[2];
      comProp=jcombo.getSelectedItem().toString().split("String_Node_Str");
      removeSamp(comProp[0],comProp[1]);
      jcombo.removeItemAt(jcombo.getSelectedIndex());
      addToStatusList(comProp[0] + "String_Node_Str" + comProp[1]+ "String_Node_Str");
    }
  }
);
  delLabel.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
  panel.add(delLabel,BorderLayout.NORTH);
  jcombo.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
  panel.add(jcombo,BorderLayout.CENTER);
  delButton.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
  panel.add(delButton,BorderLayout.EAST);
  frame.add(panel);
  frame.pack();
  frame.setVisible(true);
  frame.addWindowListener(new java.awt.event.WindowListener(){
    @Override public void windowActivated(    WindowEvent e){
    }
    @Override public void windowClosed(    WindowEvent e){
    }
    @Override public void windowClosing(    WindowEvent e){
    }
    @Override public void windowDeactivated(    WindowEvent e){
      frame=null;
    }
    @Override public void windowDeiconified(    WindowEvent e){
    }
    @Override public void windowIconified(    WindowEvent e){
    }
    @Override public void windowOpened(    WindowEvent e){
    }
  }
);
}