How to test programmatically wheather assertions have been enabled?

[Joey Sanchez]

One of the answers of Practice Exams (OCP Java SE 6) questions is:

*You can programmatically test wheather assertions have been enabled without throwing an AssertionError. - Correct answer

and my question is How can we do that?

We can set Assertion Status

ClassLoader loader = getClass().getClassLoader();
setDefaultAssertionStatus(true);

or

ClassLoader.getSystemClassLoader().setDefaultAssertionStatus(true);

[Henry Wong]

Joey Sanchez wrote:One of the answers of Practice Exams (OCP Java SE 6) questions is:

*You can programmatically test wheather assertions have been enabled without throwing an AssertionError. - Correct answer

and my question is How can we do that?

We can set Assertion Status

ClassLoader loader = getClass().getClassLoader();
setDefaultAssertionStatus(true);

or

ClassLoader.getSystemClassLoader().setDefaultAssertionStatus(true);

The Oracle Java Tutorial actually provides an example on how to do it...

http://docs.oracle.com/javase/1.4.2/docs/guide/lang/assert.html

And here is the excerpt from the tutorial....

7. Why not provide a construct to query the assert status of the containing class?

Such a construct would encourage people to inline complex assertion code, which we view as a bad thing. Further, it is straightforward to query the assert status atop the current API, if you feel you must:

boolean assertsEnabled = false;
assert assertsEnabled = true; // Intentional side-effect!!!
// Now assertsEnabled is set to the correct value

Henry

[Joey Sanchez]

Very clear!
Thank you very much