Both wait() and sleep() methods play an essential role in Java programming. Both methods look the same, but there is some difference in their working and existence within a program.

Let's see how they differ from each other:

wait() sleep()
wait method is one of the methods of java.lang.Object class. sleep method is one of the methods of java.lang.Thread class.
Only a synchronized block or method can call the wait() method. From any point or context in a program, you can call the sleep() method.
notify() and notifyAll() methods are used for waking the waiting thread. Interrupts are used for waking the sleeping thread.
This method is usually implemented in a Java program for performing multi-thread-synchronization. This method is generally applied for controlling the time of execution for a single thread.

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