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Java Programming - Math.class

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  • 04-10-2011 9:38am
    #1
    Mr. Skidoodles
    Registered Users Posts: 7 ✭


    I'm just starting into Java programming, having done some programming in Fortran, C and C++ many moons ago. I'm trying to calculate Cos and Sin of an angle but it seems I need 'Math.class' to get it to work. I've found quite a lot of info on different websites about the class and what it does, but nowhere have I found a download link. Can anyone point me in the right direction please.
    Thanks


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    #2
    Webmonkey
    Registered Users Posts: 9,579 ✭✭✭Webmonkey


    I don't do much Java, well nothing in the past 4 years but have you tried...

    import java.lang.Math.*

    And use static methods such as Math.sin(x);


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    #3
    Hobbes
    Registered Users Posts: 21,264 ✭✭✭✭Hobbes


    java.lang.* classes are automatically imported into your applications. So you don't need to list them explicitly.

    Here is how to use it:

    http://download.oracle.com/javase/6/docs/api/java/lang/Math.html
    double s = 10.0;
double answer = Math.sin(s);


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    #4
    Webmonkey
    Registered Users Posts: 9,579 ✭✭✭Webmonkey


    Apologies, too much C++ these days :)


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    #5
    Mr. Skidoodles
    Registered Users Posts: 7 ✭Mr. Skidoodles


    Thanks for that. I'm left scratching my head now. I had that line in my program and it wouldn't work. Some error relating to Math.class (can't remember exactly, there are so many of them). So I commented it out (// ) and continued. Now after deleting the // it works fine. Today must be a good day for it! Maybe it has Mondays off.
    Thanks again.


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