What is Assertion in java ?

Alok mishra

Alok mishra

@alok-mishra-E4tgN8 • Oct 24, 2024
What is assertion in java and why it is used ?
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  • Anoop Kumar

    Anoop Kumar

    @anoop-kumar-GDGRCn • Sep 11, 2013

    Assertions are generally part of Unit Testing.
    You are going to test something which are are you expecting.
    Like if you are expecting null then you can assert 
    assert i==null : "throw this message"
    Assertions are bydefault disabled so adding assertions will not affect your run time. but when you need it.
    just enable is by sending  jvm parameter -ea.

example :  java -ea <className>
    Good one but very less used. everyone is using IDE with debugger.
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  • vikaskumar11233

    vikaskumar11233

    @vikaskumar11233-J10JeV • Sep 12, 2013

    Assertion are used to verify the correctness of an invariant in the code. They should never be triggered in production code, and are indicative of a bug or misuse of a code path.
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