Program: 11413
Project: 11413
Buggy source:
@Override public JComponent CreateOpTab(String operatorName,Map<String,Object> parameterMap,AppContext appContext){
  initializeOperatorUI(operatorName,parameterMap);
  final JComponent panel=new JScrollPane(createPanel());
  initParameters();
  subtractFlatEarthPhaseCheckBox.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent e){
      subtractFlatEarthPhase=(e.getStateChange() == ItemEvent.SELECTED);
      if (subtractFlatEarthPhase) {
        srpPolynomialDegreeStr.setEnabled(true);
        srpNumberPointsStr.setEnabled(true);
        orbitDegreeStr.setEnabled(true);
      }
 else {
        srpPolynomialDegreeStr.setEnabled(false);
        srpNumberPointsStr.setEnabled(false);
        orbitDegreeStr.setEnabled(false);
      }
    }
  }
);
  squarePixelCheckBox.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent e){
      squarePixel=(e.getStateChange() == ItemEvent.SELECTED);
      independentWindowSizeCheckBox.setSelected(!squarePixel);
      if (squarePixel) {
        cohWinAz.setText("String_Node_Str");
        cohWinAz.setEditable(false);
      }
      setCohWinAz();
      setCohWinRg();
    }
  }
);
  independentWindowSizeCheckBox.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent e){
      squarePixel=(e.getStateChange() != ItemEvent.SELECTED);
      squarePixelCheckBox.setSelected(squarePixel);
      if (!squarePixel) {
        cohWinAz.setEditable(true);
      }
      setCohWinAz();
      setCohWinRg();
    }
  }
);
  subtractTopographicPhaseCheckBox.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent e){
      subtractTopographicPhase=(e.getStateChange() == ItemEvent.SELECTED);
      if (subtractTopographicPhase) {
        demName.setEnabled(true);
        tileExtensionPercent.setEnabled(true);
      }
 else {
        demName.setEnabled(false);
        tileExtensionPercent.setEnabled(false);
      }
    }
  }
);
  demName.addItem(externalDEMStr);
  demName.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent event){
      final String item=((String)demName.getSelectedItem()).replace(DEMFactory.AUTODEM,"String_Node_Str");
      if (item.equals(externalDEMStr)) {
        enableExternalDEM(true);
      }
 else {
        externalDEMFile.setText("String_Node_Str");
        enableExternalDEM(false);
      }
    }
  }
);
  externalDEMFile.setColumns(30);
  final String demItem=((String)demName.getSelectedItem()).replace(DEMFactory.AUTODEM,"String_Node_Str");
  enableExternalDEM(demItem.equals(externalDEMStr));
  externalDEMBrowseButton.addActionListener(new ActionListener(){
    public void actionPerformed(    ActionEvent e){
      final File file=Dialogs.requestFileForOpen("String_Node_Str",false,null,DEMFactory.LAST_EXTERNAL_DEM_DIR_KEY);
      if (file != null) {
        externalDEMFile.setText(file.getAbsolutePath());
        extNoDataValue=OperatorUIUtils.getNoDataValue(file);
      }
      externalDEMNoDataValue.setText(String.valueOf(extNoDataValue));
    }
  }
);
  externalDEMNoDataValue.addKeyListener(textAreaKeyListener);
  return panel;
}

Fixed version (ground truth):
@Override public JComponent CreateOpTab(String operatorName,Map<String,Object> parameterMap,AppContext appContext){
  initializeOperatorUI(operatorName,parameterMap);
  final JComponent panel=new JScrollPane(createPanel());
  initParameters();
  subtractFlatEarthPhaseCheckBox.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent e){
      subtractFlatEarthPhase=(e.getStateChange() == ItemEvent.SELECTED);
      enableSubtractFlatEarthPhaseParameters(subtractFlatEarthPhase);
    }
  }
);
  squarePixelCheckBox.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent e){
      squarePixel=(e.getStateChange() == ItemEvent.SELECTED);
      independentWindowSizeCheckBox.setSelected(!squarePixel);
      if (squarePixel) {
        cohWinAz.setText("String_Node_Str");
        cohWinAz.setEditable(false);
      }
      setCohWinAz();
      setCohWinRg();
    }
  }
);
  independentWindowSizeCheckBox.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent e){
      squarePixel=(e.getStateChange() != ItemEvent.SELECTED);
      squarePixelCheckBox.setSelected(squarePixel);
      if (!squarePixel) {
        cohWinAz.setEditable(true);
      }
      setCohWinAz();
      setCohWinRg();
    }
  }
);
  subtractTopographicPhaseCheckBox.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent e){
      subtractTopographicPhase=(e.getStateChange() == ItemEvent.SELECTED);
      enableSubtractTopographicPhaseParameters(subtractTopographicPhase);
    }
  }
);
  demName.addItem(externalDEMStr);
  demName.addItemListener(new ItemListener(){
    public void itemStateChanged(    ItemEvent event){
      final String item=((String)demName.getSelectedItem()).replace(DEMFactory.AUTODEM,"String_Node_Str");
      if (item.equals(externalDEMStr)) {
        enableExternalDEM(true);
      }
 else {
        externalDEMFile.setText("String_Node_Str");
        enableExternalDEM(false);
      }
    }
  }
);
  externalDEMFile.setColumns(30);
  final String demItem=((String)demName.getSelectedItem()).replace(DEMFactory.AUTODEM,"String_Node_Str");
  enableExternalDEM(demItem.equals(externalDEMStr));
  externalDEMBrowseButton.addActionListener(new ActionListener(){
    public void actionPerformed(    ActionEvent e){
      final File file=Dialogs.requestFileForOpen("String_Node_Str",false,null,DEMFactory.LAST_EXTERNAL_DEM_DIR_KEY);
      if (file != null) {
        externalDEMFile.setText(file.getAbsolutePath());
        extNoDataValue=OperatorUIUtils.getNoDataValue(file);
      }
      externalDEMNoDataValue.setText(String.valueOf(extNoDataValue));
    }
  }
);
  externalDEMNoDataValue.addKeyListener(textAreaKeyListener);
  return panel;
}