Discussion
Sample15 is run - what will be the output?
public class Sample15
{
public static void main(String[] args) throws InterruptedException
{
Thread t = new Thread(() ->
{
throw new RuntimeException("boom");
});
t.start();
t.join();
System.out.println("main done");
}
}
Answer: C
An exception that escapes run() kills only that thread; the default handler reports it and join() then returns normally. main is unaffected and prints. The exception cannot be caught around start() or join(), because it happened on another thread.
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