Discussion
Which line is an inappropriate use of an assertion?
public class Sample53
{
public static void main(String[] args)
{
assert compute() > 0;
System.out.println("checked");
}
static int compute() throws IllegalStateException
{
throw new IllegalStateException("no data");
}
}
Answer: A
The condition calls a method that always throws, so with -ea the program dies with IllegalStateException rather than an AssertionError, and without -ea it prints checked and never notices. An assertion whose condition can throw reports the wrong failure, or none at all.
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