error trying to find a saddle point in a matrix
<p>I have written some code to find the position of a saddle point (an element within a matrix which is the maximum element of its corresponding row and simultaneously the minimum of its column) of a matrix. However, there is an error saying:</p>

<pre><code>The local variable col may not have been initialized
at SaddlePoint.findSaddle(SaddlePoint.java:41)
at SaddlePoint.main(SaddlePoint.java:52)
</code></pre>

<p>I can't understand why it is saying so.  Any help would be very much appreciated.  Below I have given my code:</p>

<pre><code>public class SaddlePoint {

    int arr[][]=new int[4][5];

    public SaddlePoint(int x[][])
    {
        for(int i=0;i&lt;arr.length;i++)
            for(int j=0;j&lt;arr[i].length;j++)
                arr[i][j]=x[i][j];
    }

    public void display(int x[][])
    {
        System.out.println();
        for(int i=0;i&lt;arr.length;i++)
        {for(int j=0;j&lt;arr[i].length;j++)
            System.out.print(arr[i][j]+"\t");
            System.out.println();
        }
    }
    public void findSaddle()
    {
        int row,col,flag;
        for(int i=0;i&lt;arr.length;i++)
        {int max=arr[i][0];col=0;flag=0;
            for(int j=1;j&lt;arr[i].length;j++)
                if(max&lt;arr[i][j])
                {max=arr[i][j];
                    col=j;
                }
            for(int k=0;k&lt;arr.length;k++)
                if(arr[k][col]&lt;max)
                {  flag=1;
                    break;
                }
            if(flag==0)
            {row=i;
                break;
            }
        }
        if(flag==0)
            System.out.println("The Position of the Saddle Point is at Row "+(row+1)+"&amp; Column "+(col+1));
        else
            System.out.println("Not found.");
    }

    public static void main(String args[])
    {
        int array[][]   ={{12,8,37,15,16},{2,12,21,14,13},{15,47,23,20,19},{65,57,43,21,47}};
        SaddlePoint sadl=new SaddlePoint(array);
        sadl.display(array);
        sadl.findSaddle();
    }
}
</code></pre>
