Answer / ravikiran

Thread is a sequential flow of control

With the help of wait(),notify(),notifyAll() methods from
the Object class

We can force a thread to be locked by making the object to
be synchronized or putting the code inside a synchronized block

We will got to know the unlocking status with the help of
notify / notifyAll method calls.

Method level block will provide a lock for the whole method
access.Block level lock will lead to a particular portion of
a program to be get locked.

public class Test { public static void main(String ar[]) { Integer a = 10; Integer b =10; Integer c = 145; Integer d = 145; System.out.println(a==b); System.out.println(c==d); } }

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