Object类的工具方法 public boolean equals(object obj) public int hash Code( protected Object clone throws CloneNotsupported Exception public final class getclass( protected void finalize throws Throwable public String toString( oublic final void wait(long timeout) throws Interrupted Exception public final void wait(long timeout, int nanos) throws InterruptedException public final void waito throws Interrupted Exception public final void notify public final void notifyAllo 2021/2/20 java面向对象程序设计教程2021/2/20 Java面向对象程序设计教程 9 Object类的工具方法 ◼ public boolean equals(Object obj) ◼ public int hashCode() ◼ protected Object clone() throws CloneNotSupportedException ◼ public final Class getClass() ◼ protected void finalize() throws Throwable ◼ public String toString() ◼ public final void wait(long timeout) throws InterruptedException ◼ public final void wait(long timeout, int nanos) throws InterruptedException ◼ public final void wait() throws InterruptedException ◼ public final void notify() ◼ public final void notifyAll()