public class _Object { public _Object(){}; protected Object clone(){return null;}; public boolean equals(Object obj){return true;}; protected void finalize(){}; public final Class _getClass(){return null;}; public int hashCode(){return 0;}; public final void _notify(){}; public final void _notifyAll(){}; public String toString(){return null;}; public final void _wait(){}; public final void _wait(long timeout){}; // public final void _wait(long timeout, int nanos){}; }