Sunday, 24 February 2013

Are Java Assertions Enabled?

A quick tip if you ever need to test whether assertions are enabled in Java, without having to throw and catch an assertion exception.
    boolean ASSERTIONS_ENABLED = false;

    assert ASSERTIONS_ENABLED = true;
This code sets ASSERTIONS_ENABLED to false and then, if and only if assertions are enabled then the assert expression will run. The assert expression sets ASSERTIONS_ENABLED to true and returns true. Thus no exception will be thrown.

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