Program: 3925
Project: 3925
Buggy source:
@Override public String getSubHeading(PropertiableFile propertiable){
  String subheading="String_Node_Str";
switch (propertiable.getCategory()) {
case AUDIO:
{
      String albumTitle=getPropertyString(propertiable,FilePropertyKey.ALBUM);
      Long qualityScore=getQualityScore(propertiable);
      Long length=getLength(propertiable);
      boolean insertHyphen=false;
      if (!StringUtils.isEmpty(albumTitle)) {
        subheading+=albumTitle;
        insertHyphen=true;
      }
      if (qualityScore != null) {
        if (insertHyphen) {
          subheading+="String_Node_Str";
        }
        subheading+=I18n.tr("String_Node_Str",GuiUtils.toQualityString(qualityScore));
        insertHyphen=true;
      }
      if (length != null) {
        subheading=addLength(subheading,length,insertHyphen);
      }
 else {
        Long fileSize=getFileSize(propertiable);
        subheading=addFileSize(subheading,fileSize,insertHyphen);
      }
    }
  break;
case VIDEO:
{
  Long qualityScore=getQualityScore(propertiable);
  Long length=getLength(propertiable);
  Long fileSize=getFileSize(propertiable);
  boolean insertHyphen=false;
  if (qualityScore != null) {
    subheading+=I18n.tr("String_Node_Str",GuiUtils.toQualityString(qualityScore));
    insertHyphen=true;
  }
  subheading=addLength(subheading,length,insertHyphen);
  subheading=addFileSize(subheading,fileSize,insertHyphen);
}
break;
case IMAGE:
{
Object time=propertiable.getProperty(FilePropertyKey.DATE_CREATED);
if (time != null && time instanceof Long) {
subheading=DATE_FORMAT.format(new java.util.Date((Long)time));
}
}
break;
case PROGRAM:
{
Long fileSize=getFileSize(propertiable);
if (fileSize != null) {
subheading=GuiUtils.toUnitbytes(fileSize);
}
}
break;
case DOCUMENT:
case OTHER:
default :
{
subheading=iconManager.getMIMEDescription(propertiable);
subheading=subheading == null ? "String_Node_Str" : subheading;
Long fileSize=getFileSize(propertiable);
subheading=addFileSize(subheading,fileSize,!"String_Node_Str".equals(subheading));
}
}
return subheading == null ? "String_Node_Str" : subheading;
}

Fixed version (ground truth):
@Override public String getSubHeading(PropertiableFile propertiable){
  String subheading="String_Node_Str";
switch (propertiable.getCategory()) {
case AUDIO:
{
      String albumTitle=getPropertyString(propertiable,FilePropertyKey.ALBUM);
      Long qualityScore=getQualityScore(propertiable);
      Long length=getLength(propertiable);
      boolean insertHyphen=false;
      if (!StringUtils.isEmpty(albumTitle)) {
        subheading+=albumTitle;
        insertHyphen=true;
      }
      if (qualityScore != null) {
        if (insertHyphen) {
          subheading+="String_Node_Str";
        }
        subheading+=I18n.tr("String_Node_Str",GuiUtils.toQualityString(qualityScore));
        insertHyphen=true;
      }
      if (length != null) {
        subheading=addLength(subheading,length,insertHyphen);
      }
 else {
        Long fileSize=getFileSizeLong(propertiable);
        subheading=addFileSize(subheading,fileSize,insertHyphen);
      }
    }
  break;
case VIDEO:
{
  Long qualityScore=getQualityScore(propertiable);
  Long length=getLength(propertiable);
  Long fileSize=getFileSizeLong(propertiable);
  boolean insertHyphen=false;
  if (qualityScore != null) {
    subheading+=I18n.tr("String_Node_Str",GuiUtils.toQualityString(qualityScore));
    insertHyphen=true;
  }
  subheading=addLength(subheading,length,insertHyphen);
  subheading=addFileSize(subheading,fileSize,insertHyphen);
}
break;
case IMAGE:
{
Object time=propertiable.getProperty(FilePropertyKey.DATE_CREATED);
if (time != null && time instanceof Long) {
subheading=DATE_FORMAT.format(new java.util.Date((Long)time));
}
}
break;
case PROGRAM:
{
subheading=getFileSize(propertiable);
}
break;
case DOCUMENT:
case OTHER:
default :
{
subheading=iconManager.getMIMEDescription(propertiable);
subheading=subheading == null ? "String_Node_Str" : subheading;
Long fileSize=getFileSizeLong(propertiable);
subheading=addFileSize(subheading,fileSize,!"String_Node_Str".equals(subheading));
}
}
return subheading == null ? "String_Node_Str" : subheading;
}