Need help!!

**helo** · July 5th, 2011, 01:47 PM

Haiii everyone.. i really need help about this code.. please someone help me..

public class Ant 
{
    private int Row = 0;
    private int Column = 0;
    private String [] [] ArrayAnt;
 
    public Ant(int r, int c)
    {
        Row = r;
        Column = c;
        ArrayAnt = new String[Row] [Column];
        Grid();
    }
 
    private void Grid()
    {
        for(int r = 0; r < Row; r++)
        {
            for(int c = 0; c < Column; c++)
            {
                ArrayAnt[r][c] = "W";
            }
        }
    }
}
 
 
 
public class ProgramAnt1 
{
     public static void main(String[] args) 
     {
         Ant ant = new Ant(3,3);
         System.out.println(ant);
     }
}

that code cannot print the array.. please help me to solve it.. thanks..

**copeg** · July 5th, 2011, 03:07 PM

It helps to be a lot more specific than that. I can assume you want to print the variable ArrayAnt (for what its worth, I'd recommend reading up on java code conventions)? Then print the array or loop over the array and print its values (as opposed to printing the Object, which only calls the toString() method of said object - see the API for object to determine what this (by default) is)

**dlorde** · July 7th, 2011, 12:46 PM

If you really want to print Ant by passing it to a println method, you must write an Ant.toString() method that returns a String containing the Ant details you want printed.

**helo** · July 10th, 2011, 01:19 PM

Originally Posted by copeg

It helps to be a lot more specific than that. I can assume you want to print the variable ArrayAnt (for what its worth, I'd recommend reading up on java code conventions)? Then print the array or loop over the array and print its values (as opposed to printing the Object, which only calls the toString() method of said object - see the API for object to determine what this (by default) is)

yes thanks for the information... coz in my assignment they said cannot using toString() method.. anyway thanks

**helo** · July 10th, 2011, 01:21 PM

Originally Posted by dlorde

If you really want to print Ant by passing it to a println method, you must write an Ant.toString() method that returns a String containing the Ant details you want printed.

thanks for information.. anyway the tester is given by the assignment like that (System.out.println(ant)

..

**Norm** · July 10th, 2011, 03:56 PM

System.out.println(ant);
If that is the statement that you must use to print out the contents of an Ant instance and you are not allowed to add a toString() method to your class, then the output from that println will be from the default Object class's toString method which will look like: Ant@123dd24

**iknowthatforgo** · July 13th, 2011, 03:57 AM

here u are..

class Ant{
//edited by moderator
}

**helo** · July 26th, 2011, 04:15 PM

Originally Posted by iknowthatforgo

here u are..

thanks for it.. haha.. does any one show me how to use toString method in this code? just for studying..

**copeg** · July 26th, 2011, 04:19 PM

iknowthatforgo, please read the following.
http://www.javaprogrammingforums.com...n-feeding.html

**Norm** · July 26th, 2011, 04:23 PM

I assume you are asking how to define a class's toString() method.
Read the API doc for Object class's toString method.
For the Ant class, say you want to see some of its instance variables.

public String toString() {
   return "Ant: row=" + row + ", column=" + column;  // return our variables
} // end toString

**meathead** · October 6th, 2011, 01:50 PM

System.out.println does not understand class ant. How about adding a func called printAnt() to the class. Inside the method have row and col loops as you had to load it as in, but instead of assigning a char you print it. Between loops, remember to println.

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