Program: 101529
Project: 101529
Buggy source:
/** 
 * BookInstaller can manage the installation of books with the following capabilities. Usage: BookInstaller [option]<br/> Options: <table border="0"> <tr><td>uninstall</td><td>bookName               </td><td>Uninstall book</td></tr> <tr><td>sources  </td><td>&nbsp;                 </td><td>List source repositories</td></tr> <tr><td>list     </td><td>&nbsp;                 </td><td>List installed books</td></tr> <tr><td>list     </td><td>repositoryName         </td><td>list available books from a repository</td></tr> <tr><td>reload   </td><td>repositoryName         </td><td>Reload the local cache for a repository</td></tr> <tr><td>install  </td><td>repositoryName bookName</td><td>Install a book from a repository</td></tr> </table>
 * @param args
 */
public static void main(String[] args){
  if (args.length < 1) {
    usage();
  }
  System.err.print("String_Node_Str" + args[0]);
  for (int i=1; i < args.length; i++) {
    System.err.print(' ');
    System.err.print(args[i]);
  }
  BookInstaller installer=new BookInstaller();
  String operation=args[0];
  if (operation.equalsIgnoreCase("String_Node_Str")) {
    Book b=Books.installed().getBook(args[1]);
    if (b == null) {
      System.err.println("String_Node_Str");
      System.exit(1);
    }
    try {
      installer.deleteBook(b);
    }
 catch (    BookException e) {
      e.printStackTrace();
    }
  }
 else   if (operation.equalsIgnoreCase("String_Node_Str")) {
    Map installers=installer.getInstallers();
    Iterator iter=installers.keySet().iterator();
    while (iter.hasNext()) {
      System.out.println(iter.next());
    }
  }
 else   if (operation.equalsIgnoreCase("String_Node_Str")) {
    if (args.length == 1) {
      Iterator iter=BookInstaller.getInstalledBooks().iterator();
      while (iter.hasNext()) {
        Book book=(Book)iter.next();
        System.out.println(book.getInitials());
      }
    }
 else     if (args.length == 2) {
      Iterator iter=installer.getRepositoryBooks(args[1]).iterator();
      while (iter.hasNext()) {
        Book book=(Book)iter.next();
        System.out.println(book.getInitials());
      }
    }
 else {
      usage();
    }
  }
 else   if (operation.equalsIgnoreCase("String_Node_Str")) {
    if (args.length == 2) {
      try {
        installer.reloadBookList(args[1]);
      }
 catch (      InstallException e) {
        e.printStackTrace();
      }
    }
 else {
      usage();
    }
  }
 else   if (operation.equalsIgnoreCase("String_Node_Str")) {
    if (args.length == 3) {
      Book b=installer.getBook(args[1],args[2]);
      if (b == null) {
        System.err.println("String_Node_Str");
        System.exit(1);
      }
      try {
        installer.installBook(args[1],b);
      }
 catch (      BookException e) {
        e.printStackTrace();
      }
catch (      InstallException e) {
        e.printStackTrace();
      }
    }
 else {
      usage();
    }
  }
 else {
    usage();
  }
}

Fixed version (ground truth):
/** 
 * BookInstaller can manage the installation of books with the following capabilities. Usage: BookInstaller [option]<br/> Options: <table border="0"> <tr><td>uninstall</td><td>bookName               </td><td>Uninstall book</td></tr> <tr><td>sources  </td><td>&nbsp;                 </td><td>List source repositories</td></tr> <tr><td>list     </td><td>&nbsp;                 </td><td>List installed books</td></tr> <tr><td>list     </td><td>repositoryName         </td><td>list available books from a repository</td></tr> <tr><td>reload   </td><td>repositoryName         </td><td>Reload the local cache for a repository</td></tr> <tr><td>install  </td><td>repositoryName bookName</td><td>Install a book from a repository</td></tr> </table>
 * @param args
 */
public static void main(String[] args){
  if (args.length < 1) {
    usage();
  }
  System.err.print("String_Node_Str");
  for (int i=0; i < args.length; i++) {
    System.err.print(' ');
    System.err.print(args[i]);
  }
  System.err.print('\n');
  BookInstaller installer=new BookInstaller();
  String operation=args[0];
  if (operation.equalsIgnoreCase("String_Node_Str")) {
    if (args.length == 2) {
      Book b=Books.installed().getBook(args[1]);
      if (b == null) {
        System.err.println("String_Node_Str");
        System.exit(1);
      }
      try {
        installer.deleteBook(b);
      }
 catch (      BookException e) {
        e.printStackTrace();
      }
    }
 else {
      usage();
    }
  }
 else   if (operation.equalsIgnoreCase("String_Node_Str")) {
    Map installers=installer.getInstallers();
    Iterator iter=installers.keySet().iterator();
    while (iter.hasNext()) {
      System.out.println(iter.next());
    }
  }
 else   if (operation.equalsIgnoreCase("String_Node_Str")) {
    if (args.length == 1) {
      Iterator iter=BookInstaller.getInstalledBooks().iterator();
      while (iter.hasNext()) {
        Book book=(Book)iter.next();
        System.out.println(book.getInitials());
      }
    }
 else     if (args.length == 2) {
      Iterator iter=installer.getRepositoryBooks(args[1]).iterator();
      while (iter.hasNext()) {
        Book book=(Book)iter.next();
        System.out.println(book.getInitials());
      }
    }
 else {
      usage();
    }
  }
 else   if (operation.equalsIgnoreCase("String_Node_Str")) {
    if (args.length == 2) {
      try {
        installer.reloadBookList(args[1]);
      }
 catch (      InstallException e) {
        e.printStackTrace();
      }
    }
 else {
      usage();
    }
  }
 else   if (operation.equalsIgnoreCase("String_Node_Str")) {
    if (args.length == 3) {
      Book b=installer.getBook(args[1],args[2]);
      if (b == null) {
        System.err.println("String_Node_Str");
        System.exit(1);
      }
      try {
        installer.installBook(args[1],b);
      }
 catch (      BookException e) {
        e.printStackTrace();
      }
catch (      InstallException e) {
        e.printStackTrace();
      }
    }
 else {
      usage();
    }
  }
 else {
    usage();
  }
}