Rethrowing an Exception: Why does the method compile without a throws clause?

Question

On the source code below I\'m rethrowing an Exception.
Why is it not necessary to put the throws keyword on the method\'s signature?

Answer 1

Why is not necessary to put the throws keyword on the method's signature?

You can put that cause your // Any processing is not throwing any checked-exception.

Example:

This compile fine.

public void throwsOrNotThrowsThatsTheQuestion() {
    try {

        throw new RuntimeException();

    } catch (Exception e) {
        throw e;
    }

This won't compile, you need to add throws clause.

public void throwsOrNotThrowsThatsTheQuestion() {
    try {
        throw new Exception();
    } catch (Exception e) {
        //do something like log and rethrow
        throw e;
    }
}

This is working since java 7. In previous version an exception is thrown. More information rethrow in java 7