Join() method in java multithreading

The join() method in Java is used when a thread needs to wait for another thread to finish its execution.

In other words, this method is used to wait for the current thread until the thread that has called the join() method completes its execution.

The join() method is an instance method, and it is always called by an object of Thread class.

The general syntax to call join() method in Java program is as follows:

Calling join() method halts the execution of current thread (calling thread) until the ThreadName thread completes its execution (normal or abnormal termination).

Join() method in java string

This means that the current thread will wait until the called thread completes its execution. Look at the below figure.

Different Forms of Join Method in Java

Thread class provides join() method in three flavors in Java.

The general form of join() method is given below:

Two other overloaded versions of join() method of Thread class take timeout arguments. The general forms of overloaded version of join() method in java are as follows:

If we use join() method with timeout, the caller thread will wait