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Thread: Valid Java, compile

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    Default Valid Java, compile

    Hey I have this question in my assignment and I can't see why it would compile, so confused...any help with this question?

    The following code excerpt is valid Java

    if (b = check ()){
    System.out.println("All is OK.");
    }

    What can you infer about 'check()' and 'b'?
    The syntax for an if-expression is if(boolean expression).
    However
    b = check() appears to be an assignment expression. Explain why
    if (b = check()) does in fact compile.

    Would appreciate any help with this guys it has got me stumped.


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    Default Re: Valid Java, compile

    Hint: What does the assignment operator return? Might have to do some googling or putting together some test programs to figure it out.
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    Default Re: Valid Java, compile

    How do I put a test program together for that? I am literally starting level and so un confident with Java

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    Default Re: Valid Java, compile

    How about using a print statement? Something like this:

    System.out.println(b = check());

    Now, what if the variable is an int? A String? Something else? What happens then?
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