Program: 11481
Project: 11481
Buggy source:
/** 
 * Initializes this operator and sets the one and only target product. <p>The target product can be either defined by a field of type   {@link org.esa.beam.framework.datamodel.Product} annotated with the{@link org.esa.beam.framework.gpf.annotations.TargetProduct TargetProduct} annotation orby calling  {@link #setTargetProduct} method.</p><p>The framework calls this method after it has created this operator. Any client code that must be performed before computation of tile data should be placed here.</p>
 * @throws org.esa.beam.framework.gpf.OperatorException If an error occurs during operator initialisation.
 * @see #getTargetProduct()
 */
@Override public void initialize() throws OperatorException {
  try {
    if (sourceProduct == null) {
      return;
    }
    checkSourceProductValidity();
    masterProduct=sourceProduct[0];
    slaveProduct=sourceProduct[1];
    mSU=new Sentinel1Utils(masterProduct);
    sSU=new Sentinel1Utils(slaveProduct);
    sSU.computeDopplerRate();
    sSU.computeReferenceTime();
    mOrbit=mSU.getOrbit();
    sOrbit=sSU.getOrbit();
    mSubSwath=mSU.getSubSwath();
    sSubSwath=sSU.getSubSwath();
    final String[] mSubSwathNames=mSU.getSubSwathNames();
    final String[] sSubSwathNames=sSU.getSubSwathNames();
    if (mSubSwathNames.length != 1 || sSubSwathNames.length != 1) {
      throw new OperatorException("String_Node_Str");
    }
    if (!mSubSwathNames[0].equals(sSubSwathNames[0])) {
      throw new OperatorException("String_Node_Str");
    }
    subSwathName=mSubSwathNames[0];
    subSwathIndex=1;
    swathIndexStr=mSubSwathNames[0].substring(2);
    final String[] mPolarizations=mSU.getPolarizations();
    final String[] sPolarizations=sSU.getPolarizations();
    if (!mPolarizations[0].equals(sPolarizations[0])) {
      throw new OperatorException("String_Node_Str");
    }
    polarization=mPolarizations[0];
    if (externalDEMFile == null) {
      DEMFactory.checkIfDEMInstalled(demName);
    }
    DEMFactory.validateDEM(demName,masterProduct);
    selectedResampling=ResamplingFactory.createResampling(resamplingType);
    getMeanTerrainElevation();
    createTargetProduct();
    updateTargetProductMetadata();
    final Band masterBandI=getBand(masterProduct,"String_Node_Str",swathIndexStr,polarization);
    noDataValue=masterBandI.getNoDataValue();
  }
 catch (  Throwable e) {
    OperatorUtils.catchOperatorException(getId(),e);
  }
}

Fixed version (ground truth):
/** 
 * Initializes this operator and sets the one and only target product. <p>The target product can be either defined by a field of type   {@link org.esa.beam.framework.datamodel.Product} annotated with the{@link org.esa.beam.framework.gpf.annotations.TargetProduct TargetProduct} annotation orby calling  {@link #setTargetProduct} method.</p><p>The framework calls this method after it has created this operator. Any client code that must be performed before computation of tile data should be placed here.</p>
 * @throws org.esa.beam.framework.gpf.OperatorException If an error occurs during operator initialisation.
 * @see #getTargetProduct()
 */
@Override public void initialize() throws OperatorException {
  try {
    if (sourceProduct == null) {
      return;
    }
    checkSourceProductValidity();
    masterProduct=sourceProduct[0];
    slaveProduct=sourceProduct[1];
    mSU=new Sentinel1Utils(masterProduct);
    sSU=new Sentinel1Utils(slaveProduct);
    sSU.computeDopplerRate();
    sSU.computeReferenceTime();
    mOrbit=mSU.getOrbit();
    sOrbit=sSU.getOrbit();
    mSubSwath=mSU.getSubSwath();
    sSubSwath=sSU.getSubSwath();
    final String[] mSubSwathNames=mSU.getSubSwathNames();
    final String[] sSubSwathNames=sSU.getSubSwathNames();
    if (mSubSwathNames.length != 1 || sSubSwathNames.length != 1) {
      throw new OperatorException("String_Node_Str");
    }
    if (!mSubSwathNames[0].equals(sSubSwathNames[0])) {
      throw new OperatorException("String_Node_Str");
    }
    subSwathName=mSubSwathNames[0];
    subSwathIndex=1;
    swathIndexStr=mSubSwathNames[0].substring(2);
    final String[] mPolarizations=mSU.getPolarizations();
    final String[] sPolarizations=sSU.getPolarizations();
    if (!mPolarizations[0].equals(sPolarizations[0])) {
      throw new OperatorException("String_Node_Str");
    }
    polarization=mPolarizations[0];
    if (externalDEMFile == null) {
      DEMFactory.checkIfDEMInstalled(demName);
    }
    DEMFactory.validateDEM(demName,masterProduct);
    selectedResampling=ResamplingFactory.createResampling(resamplingType);
    createTargetProduct();
    updateTargetProductMetadata();
    final Band masterBandI=getBand(masterProduct,"String_Node_Str",swathIndexStr,polarization);
    noDataValue=masterBandI.getNoDataValue();
  }
 catch (  Throwable e) {
    OperatorUtils.catchOperatorException(getId(),e);
  }
}