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Thread: new to java.... having a hard time trying to read code

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    Default new to java.... having a hard time trying to read code

    I am studying but can't figure out what the outcome of this code will be... If you answer can you please explain what the code is saying.
    final int sub = 12;
    int [ ] x =  new int [sub];
    int y = 20;
    for(int i = 0;  i < sub; i++)
    {
       x[i] = y;
        y+ = 5;
    }


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    Default Re: new to java.... having a hard time trying to read code

    Time to get out a piece of paper and a pencil. Write out the values of each variable and array index, and cross them out and rewrite them as they change.

    Alternatively, you could also run this through a debugger.
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    Cool Re: new to java.... having a hard time trying to read code

    Quote Originally Posted by Newbie_96 View Post
    I am studying but can't figure out what the outcome of this code will be... If you answer can you please explain what the code is saying.
    final int sub = 12;
    int [ ] x =  new int [sub];
    int y = 20;
    for(int i = 0;  i < sub; i++)
    {
       x[i] = y;
        y+ = 5;
    }

    the meaning of that code is
    1st line : you make an variable sub that have value 12
    2nd line : you make an Array x with lengt alocation 12
    3rd line : you make a variable y that have value 20
    4th-8th line : loop for fill the value of array x for 12x loop.,.

    Note : y+=5 have same meaning with y=y+5
    Array started with 0 indeks


    so that if you run this program in main method
    public class tryAray
    {
       public static void main(String args [])
       {
           final int sub = 12;
            int [ ] x =  new int [sub];
            int y = 20;
            for(int i = 0;  i < sub; i++)
            {
                 x[i] = y;
                 y+ = 5;
                 System.out.println("X ["+i+"]= "+x[i]);
            }
         }
    }
    Last edited by odearafat; August 6th, 2011 at 02:53 AM.

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