What is InterruptedException in Java?

What is InterruptedException in Java?

java.lang.InterruptedException. Thrown when a thread is waiting, sleeping, or otherwise occupied, and the thread is interrupted, either before or during the activity. Occasionally a method may wish to test whether the current thread has been interrupted, and if so, to immediately throw this exception.

What causes Java Lang InterruptedException?

An InterruptedException is thrown when a thread is interrupted while it’s waiting, sleeping, or otherwise occupied. In other words, some code has called the interrupt() method on our thread. It’s a checked exception, and many blocking operations in Java can throw it.

How do I resolve InterruptedException?

In thread-related code, you will often need to handle an InterruptedException . There are two common ways of handling it: just throw the exception up to the caller (perhaps after doing some clean up) call the interrupt method on the current thread.

Can we catch InterruptedException?

If the blocking network call throws an InterruptedException your method can not finish computation in a normal way. You let the InterruptedException propagate. If no, then you should not declare your method with throws InterruptedException and you should (must!) catch the exception.

Is InterruptedException a runtime exception?

(b) RuntimeException signals a programming error; InterruptedException is not a result of a programming an error. InterruptedExceptions are particular complicated to handle, when they happen you need to care about the interrupt flag of the thread, and it can only happen in blocking operations.

Why sleep method throws InterruptedException?

sleep() method throws InterruptedException if a thread in sleep is interrupted by other threads. InterruptedException is a checked type of exception. sleep()” statement must be enclosed within try-catch blocks or it must be specified with throws clause.

What happens when thread is interrupted?

3 Answers. Interrupting a thread is a state-safe way to cancel it, but the thread itself has to be coded to pay attention to interrupts. Long, blocking Java operations that throw InterruptedException will throw that exception if an . interrupt() occurs while that thread is executing.

Why InterruptedException is a checked exception?

With InterruptedException being checked, the worst case is that the exception is caught, but in a way that isn’t awfully useful. (Actually the absolute worst case is the interrupt flag is not restored, leaving any following code in the thread unaware that the interruption happened.)

What will happen if a thread goes to sleep Mcq?

Answer: (b) It does not release any locks. Explanation: The sleep() method does not release any locks of an object for a specific time or until an interrupt occurs. Therefore, when a thread goes to sleep, it does not release any locks. Hence, the correct answer is the option (b).

Is InterruptedException a checked exception?

Since InterruptedException is a checked exception that is checked by the compiler itself for the smooth execution of the program at runtime, therefore, we got a compilation error at compile-time and InterruptedException exception at runtime.

What will happen if a thread goes to sleep?

Explanation: The sleep() method does not release any locks of an object for a specific time or until an interrupt occurs. It leads to the poor performance or deadlock of threads. Therefore, when a thread goes to sleep, it does not release any locks. Hence, the correct answer is the option (b).

How many Threads can be executed at a time?

In the operating system, only one thread is executed at a time.