public class Object {//非native方法public boolean equals(Object obj) {return (this == obj);}public String toString() {return getClass().getName() + "@" + Integer.toHexString(hashCode());} //虽然不是native方法但是最终都调用了native方法public final void wait(long timeout, int nanos) throws InterruptedException {if (timeout < 0) {throw new IllegalArgumentException("timeout value is negative");}if (nanos < 0 || nanos > 999999) {throw new IllegalArgumentException("nanosecond timeout value out of range");}if (nanos > 0) {timeout++;}wait(timeout);}public final void wait() throws InterruptedException {wait(0);}protected void finalize() throws Throwable { }//以下为native方法//底层是有c/c++编写的程序编译后dll文件，java加载dll文件后，可用通过本地方法调用dll中函数. private static native void registerNatives();static {registerNatives();}public final native Class<?> getClass();public native int hashCode();protected native Object clone() throws CloneNotSupportedException;public final native void notify();public final native void notifyAll();public final native void wait(long timeout) throws InterruptedException;}