更多 Java 基礎(chǔ)知識方面的文章，請參見文集《Java 基礎(chǔ)知識》

• public final native Class<?> getClass()
• public native int hashCode()
• public boolean equals(Object obj)
• protected native Object clone() throws CloneNotSupportedException
• public String toString()
• public final native void notify()
• public final native void notifyAll()
• public final native void wait(long timeout) throws InterruptedException
• public final void wait(long timeout, int nanos) throws InterruptedException
• public final void wait() throws InterruptedException
• protected void finalize()：類似于析構(gòu)函數(shù)，在一個(gè)對象被真正回收之前，執(zhí)行一些清理工作。