Java Assertion in Try with multiple catchs

Question

Scenario:

class Assert { public static void main(String []args) { try { assert false; } catch (RuntimeException re) { System.out.println("In the handler of RuntimeException"); } catch (Exception e) { System.out.println("In the handler of Exception"); } catch (Error ae) { System.out.println("In the handler of Error"); } catch (Throwable t) { System.out.println("In the handler of Throwable"); } } }

I am expecting 'In the handler of Error' because AssertionError is subclass of Error but it doesn't show anything and terminate normal. after then to check the out put I added this one catch handler before Error handler .

catch (AssertionError t) { System.out.println("In the handler of Throwable"); }

in know it's not a good practice to catch Error but if we does not need to catch why the program was not crashed it terminate normally?

morgano · Accepted Answer · 2015-05-02 09:51:48Z

2

By default assertions are disabled, add -ea in the command line when you execute your code with java:

java -ea Assert

answered May 2, 2015 at 9:51

morgano

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