How can I exit try / catch block without exception exception in Java

Question

I need a way to break out of the middle of a try / catch block without throwing an exception. Something like a break and a sequel for loops. Is it possible?

I get strange possibilities about throwing a custom exception (calling it "BreakContinueException"), which simply does nothing in its catch handler. I am sure this is very twisted.

So, any direct solution that I don't know about?

Answer 1

The correct way to do this is probably to break the method by putting the try-catch block in a separate method and using the return statement:

public void someMethod() { try { ... if (condition) return; ... } catch (SomeException e) { ... } } 

If the code contains many local variables, you can also consider using break from the marked block, as suggested by Stephen C :

 label: try { ... if (condition) break label; ... } catch (SomeException e) { ... } 

Answer 2

You can always do this with break from the loop construct or labeled break , as indicated in the aioobies answer.

 public static void main(String[] args) { do { try { // code.. if (condition) break; // more code... } catch (Exception e) { } } while (false); } 

Answer 3

Different ways:

• return
• break or continue when in a loop
• break to mark when in a tagged expression (see @aioobe example)
• break when in a switch statement.

...

• System.exit() ... although this is probably not what you mean.

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In my opinion, “break to label” is the most natural (least distorted) way to do this if you just want to exit try / catch. But it can confuse beginning Java programmers who have never come across this Java construct.

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By the way, return works when there is finally . But you should avoid using return in the finally block, because the semantics are a bit confusing and can give the reader a headache.

Answer 4

There are several ways to do this:

• Move the code to the new method and return from it

• Wrap try / catch in a do{}while(false); .

Answer 5

In this example, in the catch block, I change the counter value and it will break during the block:

 class TestBreak { public static void main(String[] a) { int counter = 0; while(counter<5) { try { counter++; int x = counter/0; } catch(Exception e) { counter = 1000; } } } }k 

Answer 6

This is the code that I usually do:

  try { ........... throw null;//this line just works like a 'break' ........... } catch (NullReferenceException) { } catch (System.Exception ex) { ......... } 

Answer 7

how about return it will do if not finally