Help newbie,please!


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Thread: Help newbie,please!

  1. #1
    Join Date
    Jun 2005
    Posts
    2

    Help newbie,please!

    Hi,My name is Nan,I am C/C++ programmer and now I am going to learn java,but I have a litlle problem.Can you help me find out functions in java or is there another "things" that can compare functions.
    Like I want a make calculator,which will have function calc() to calculate expressions.

  2. #2
    Join Date
    Aug 2003
    Posts
    313
    Java is very closesly related to C++, it was designed that way. Functions work pretty much the same way that they do in C++, but the thing is that everything has to be in a class. So to start you calculator example you might start with something like:
    Code:
    public class Calculator {
      public int clac(String expr) {
        // ... Code for evaluating goes here
      }
      public static void main(String[] argv) {
        System.out.println(new Calculator().calc(argv[0]));
      }
    }
    If you want to learn Java, I would look at some of the tutorials online. Sun has some decent ones: http://java.sun.com/docs/books/tutorial/.

    I hope this helps.
    ~evlich

  3. #3
    Join Date
    Jun 2005
    Location
    Chennai
    Posts
    10

    use java.lang.Math

    If you want to make use of the Java built in functions. Then try the class

    "java.lang.Math" , in which a set of mathematical functions are there.

    Cheers

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