Incomplete output with while loop

Question

I am supposed to give this output

* * * * *
 * * * * *
* * * * * *
 * * * * *

so on and so forth 5 itirations but it only shows the first 2 output

here's my code

public class itiration {

    public static void main( String args[]){

        int counter1 = 1;
        int counter2 = 1;
        int counter3 = 1;

        while(counter1<=5)
        {

                while(counter2<=5)
                {
                    System.out.print("* ");
                    System.out.print(" ");
                    counter2++;
                }

            System.out.println();

                while(counter3<=5)
                {
                    System.out.print(" ");
                    System.out.print("* ");
                    counter3++;
                }


            System.out.println();

            counter1++;
        }

    }

}

this is not a homework

In the output sample at the top of your question, the fourth line has six *s. Is that a typo or is it supposed to be like that? — Brian Willis
– Brian Willis, Commented May 19, 2011 at 4:52
What should the next line in your example sequence be? I'm not seeing any obvious pattern. — Asaph
– Asaph, Commented May 19, 2011 at 4:53

Amir Afghani · Accepted Answer · 2011-05-19 04:51:43Z

3

Have you tried stepping through this program with a debugger?

HINT: After the outer loop executes its first iteration, what are the values of counter2 and counter3?

answered May 19, 2011 at 4:51

Amir Afghani

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7 Comments

Amir Afghani Over a year ago

Also, if this isn't homework, then what is it? Just a self learning exercise?

user759630 Over a year ago

OHHH THANKS! I forgot about the counter2 and counter3. :| now I learned something new. so their values doesn't reset? after counter1++ loops?

Amir Afghani Over a year ago

No, you need to explicitly reset the values. The best way to see this is to step through this in a debugger.

user759630 Over a year ago

This is a just a self learning exercise, since I am currently studying java. for this coming semester and I bored to death this vacation so I decided to sefl study java I am using a book. also. how do I use the debugger?

Amir Afghani Over a year ago

Write Java in an IDE like Eclipse or launch jdb

|

Mat · Accepted Answer · 2011-05-19 04:52:10Z

2

You need to reset counter2 and counter3 in the loop (after counter1++ for example), otherwise they'll stay at value 5 after the first run of the loop, and the inner loops will not run any more.

answered May 19, 2011 at 4:52

Mat

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Comments

Andrew Cooper · Accepted Answer · 2011-05-19 04:52:47Z

1

You're not resetting counter2 and counter3 for each iteration of the main loop. Try this:

    int counter1 = 1;
    while(counter1<=5)
    {        
        int counter2 = 1;
        int counter3 = 1;

answered May 19, 2011 at 4:52

Andrew Cooper

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