DRAFT
CatchProvidesOptions
Misconception:
When an exception is thrown in a try block, Java finds the corresponding catch block, and executes only those statements in that block that are necessary to fix the problem.
Incorrect
Only the necessary part of a catch block executes
Correct
CorrectionHere is what's right.
Here is what's right.
Take the following example:
int moveTo(final Position p) {
moved = true;
try {
x = p.x;
y = p.y;
} catch (final NullPointerException ex) {
x = 5;
y = 8;
}
return ++steps;
}If p==null, then x=p.x throws a NullPointerException, which is caught by the catch block. Now the entire catch block executes (not only the statement fixing x by assigning it a value x=5).