Initializing Multiple Variables in a FOR Loop

Question

I'm a student trying to figure out how to fix a seemingly simple problem. I keep getting an error while trying to initialize 2 variables in a FOR loop. I'm trying to create rows for a game board. Why am I getting this error?

This is the method:

public String [] board;

public void printBoard(){
            for(int i, j = 0; i < this.board.length; i++, j++)
                if(j > 10)
                    System.out.println();
                else
                    System.out.print(this.board[i]);

> java:39: error: variable i might not have been initialized

Judging by the code, you probably also need to split the loop, to have a nested loop, in order to reach all game board pieces. As is, you will only hit the diagonals. — Tim
– Tim, Commented Jan 26, 2013 at 4:38
In java everything is very well documented before doing for loop just see basic syntax , and still if by mistake there is any error if you paste it to google it would diffidently be a better option , still if you dont find solution the post here — user1769501
– user1769501, Commented Jan 26, 2013 at 4:40

score 25 · Accepted Answer · 2013-01-26 04:40:50Z

25

It's because you didn't initialized variable i, maybe zero or else.

for(int i = 0, j = 0; i < this.board.length; i++, j++)
            if(j > 10)
                System.out.println();
            else
                System.out.print(this.board[i]);

Don't forget to initialize a variable If some objects are using it.

edited Jan 26, 2013 at 4:40

answered Jan 26, 2013 at 4:32

user948620

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Comments

A--C · Accepted Answer · 2013-01-26 04:39:55Z

4

i in fact has not been initialized. for(int i=0, j=0;.... ); will do the trick for you.

edited Jan 26, 2013 at 4:39

A--C

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answered Jan 26, 2013 at 4:35

rtcarlson

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Comments

AMIT MISHRA · Accepted Answer · 2017-05-09 06:53:27Z

-1

This is Syntax. I think this will help you to initialize more than one variable for(int k = 0, dcount = 1; k < count; k++, dcount++) {

}

answered May 9, 2017 at 6:53

AMIT MISHRA

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1 Comment

kaldoran Over a year ago

Well this topic is 4 yo, and the answer have been found since. Then I don't think your answer is necessary since it does not add anything to the other answers.

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