private List<String> findFullyQualifiedSourceFileNames(
      IClassPathBuilder builder, IClassPath classPath) {

    List<ClassDescriptor> appClassList = builder.getAppClassList();

    progress.startScanningClasses(appClassList.size());

    List<String> fullyQualifiedSourceFileNameList = new LinkedList<String>();

    for (ClassDescriptor classDesc : appClassList) {
      try {
        String fullyQualifiedSourceFileName =
            findFullyQualifiedSourceFileName(classPath, classDesc);
        fullyQualifiedSourceFileNameList.add(fullyQualifiedSourceFileName);
      } catch (IOException e) {
        errorLogger.logError("Couldn't scan class " + classDesc.toDottedClassName(), e);
      } catch (CheckedAnalysisException e) {
        errorLogger.logError("Couldn't scan class " + classDesc.toDottedClassName(), e);
      }
    }

    progress.doneScanningClasses();

    return fullyQualifiedSourceFileNameList;
  }
  private String findFullyQualifiedSourceFileName(IClassPath classPath, ClassDescriptor classDesc)
      throws IOException, CheckedAnalysisException {
    try {
      // Open and parse the class file to attempt
      // to discover the source file name.
      ICodeBaseEntry codeBaseEntry = classPath.lookupResource(classDesc.toResourceName());

      ClassParserUsingASM classParser =
          new ClassParserUsingASM(
              new ClassReader(codeBaseEntry.openResource()), classDesc, codeBaseEntry);

      ClassInfo.Builder classInfoBuilder = new ClassInfo.Builder();
      classParser.parse(classInfoBuilder);
      ClassInfo classInfo = classInfoBuilder.build();

      // Construct the fully-qualified source file name
      // based on the package name and source file name.
      String packageName = classDesc.getPackageName();
      String sourceFile = classInfo.getSource();

      if (!packageName.equals("")) {
        packageName = packageName.replace('.', '/');
        packageName += "/";
      }

      String fullyQualifiedSourceFile = packageName + sourceFile;

      return fullyQualifiedSourceFile;
    } catch (CheckedAnalysisException e) {
      errorLogger.logError("Could scan class " + classDesc.toDottedClassName(), e);
      throw e;
    } finally {
      progress.finishClass();
    }
  }