Catch Of Control Flow Exception (ARCH4168)

Key java.logging.swallow-interrupted-exception · Severity warning · Category logging

Catching and swallowing cancellation/control exceptions such as InterruptedException discards the thread’s interrupt status and breaks the cancellation mechanism. These exceptions must be allowed to propagate or the interrupt flag must be restored.

Incorrect

try {
    Thread.sleep(1000);
} catch (InterruptedException e) {
    // ignore
}

Correct

try {
    Thread.sleep(1000);
} catch (InterruptedException e) {
    Thread.currentThread().interrupt();
    throw new CancellationException("Operation interrupted");
}

Fix

When InterruptedException is caught, restore the interrupt flag with Thread.currentThread().interrupt() and terminate the operation.