Discussion
The program is run with java -ea Listing101 - what will be the output?
public class Listing101
{
public static void main(String[] args)
{
int[] queue = new int[0];
System.out.println("draining");
System.exit(0);
assert queue.length > 0 : "queue empty";
}
}
Answer: A
System.exit stops the JVM immediately, so the assertion after it never executes and cannot fail even though its condition is false. Only draining is printed. The compiler does not treat statements after System.exit as unreachable, because it is an ordinary method call rather than a control-flow statement.
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