Object类
Object类
protected Object clone() throws CloneNotSupportedException
boolean equals(Object obj)
protected void finalize()
Class<?> getClass()
int hashCode()
void notify()
void notifyAll()
String toString()
void wait()
void wait(long timeout)
void wait(long time, int nanos)
Three passions, simple but overwhelmingly strong, have governed my life: the longing for love, the search for knowledge, and unbearable pity for the suffering of mankind