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Thread: Hi,Can any one help me to understand this code.Am a beginner.

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    Post Hi,Can any one help me to understand this code.Am a beginner.

    class W
    {
    public static void main(String[] args)
    {
    int i=0;
    int j= i++ + test(i) + i;
    System.out.println(i);
    System.out.println(j);
    }
    static int test(int i)
    {

    return i++;
    }
    }


    Am getting 1 and 2 as its output.


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    Default Re: Hi,Can any one help me to understand this code.Am a beginner.

    There are two println statements. The first prints a 1 and the second prints a 2.
    To see what the code is doing add some more println statements that print out the values of all variables before and after every statement where the variables values are changed.
    System.out.println("b i="+i);
    i = <code that changes i>
    System.out.println("a i="+i);


    Please edit your post and wrap your code with
    [code=java]
    <YOUR CODE HERE>
    [/code]
    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Hi,Can any one help me to understand this code.Am a beginner.

    I want to know how exactly this increment operators are working in test method.

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    Default Re: Hi,Can any one help me to understand this code.Am a beginner.

    Did you do as I suggested and add println statements to print out the values of the variables so you can see what each statement is doing?

    Also if you want to see how some operator works, write a short simple program that uses that operator and use println statements to print out the result so you can see what the operator does.

    Also see the tutorial:
    http://docs.oracle.com/javase/tutori...bolts/op1.html
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Hi,Can any one help me to understand this code.Am a beginner.

    Ya i did try,but i dint get whats getting passed through test() method and its output from test method.

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    Default Re: Hi,Can any one help me to understand this code.Am a beginner.

    Please post the print outs and ask any questions about what a specific statement did that you do not understand.
    whats getting passed through test() method and its output from test method.
    Print out what is passed to test() and what is returned by test().

    Also try this to see how post++ works:
          int k = 0;
          System.out.println("k++="+k++);  // k++=0
          System.out.println("after k++ k="+k);  // after k++ k=1
    If you don't understand my answer, don't ignore it, ask a question.

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