why the currentThread method does NOT have the method BODY?

Question

In the class Thread in java.lang package we have

public class Thread implements Runnable{
    ...
    public static native Thread currentThread();
    ....
}

the class Thread is not an abstract class, so why the currentThread method does NOT have BODY??

Answer 1

The native keyword states that this method implementation is internal and not in Java but in platform-dependent code.