What is the purpose of process.waitfor in Java?

The purpose of the Process.waitFor() method in Java is to wait for the current process to complete and return the exit value.

Specifically, when we create a child process using the Process class in Java, we can use the waitFor() method to make the current thread wait for the child process to finish executing. If the child process terminates normally, the waitFor() method will return the exit value of the child process; if the child process is interrupted, the waitFor() method will throw an InterruptedException.

By using the waitFor() method, we can control the execution order of the program, ensuring that subsequent operations are carried out only after the child process has completed.