class java.lang.Thread implements java.lang.Runnable {
  java.lang.Thread ();
  java.lang.Thread (java.lang.Runnable);

  void start ();
  void run ();
  void interrupt ();
  boolean isInterrupted ();

  void join () throws java.lang.InterruptedException;
  void setDaemon (boolean);
  boolean isDaemon ();

  static java.lang.Thread currentThread ();
  static void yield ();
  static void sleep (long) throws java.lang.InterruptedException;

  ...
}