Declaring an array in an if statement

Question

I'm very new to java and am trying to use if statements do decide which variables are in my array.

if (count<2){
                int blockA = arrayOne[x-1][y];
                int blockB = arrayOne[x-1][y];
                int blockC = arrayOne[x][y-1];
                int blockD = arrayOne[x][y+1];

                int[] checker = {blockA,blockB,blockC,
                    blockD};
                checkCount = 4;
            }
            else {
                int blockE = arrayOne[x+1][y];
                int blockF = arrayOne[x-1][y];
                int blockG = arrayOne[x][y+1];

                int[] checker = {blockE,blockF,blockG};
                checkCount = 3;
            }

but every time I compile it comes up saying "cannot find symbol" and is talking about when I use the checker array later on, arrayOne contains only numbers. Is there a way to make this work without using a funciton? Cheers

Dave Newton · Accepted Answer · 2014-11-21 17:05:03Z

3

You're declaring the array in the scope of the if or else statement.

When the closing } is reached that scope no longer exists, thus the variable is no longer available.

Declare the variable outside of the if statement and initialize it in the if statement.

Care must be taken to ensure it's initialized for all execution paths.

answered Nov 21, 2014 at 17:05

Dave Newton

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