Search in 2d Array

public class SearchIn2DArr {
    public static void main(String[] args) {
       int[][] num=new int[][]{
               {1,2,3},
               {4,5,6,33,45,52},
               {7,8,9,23,11,12,13},
               {122,33}

       } ;
        System.out.println(max(num));
        System.out.println(even(num));
//        int target=23;
//        int[] ans=search(num,target);
//        System.out.println(ans);
    }
//    static int[] search(int[][] arr, int target) {
//        for(int i=0;i<arr.length;i++) {
//            for(int j=0;j<arr[i].length;j++) {
//                if(arr[i][j] == target) {
//                    return new int[]{i,j};
//
//                }
//            }
//        }
//        return new int[]{-1,-1};
//    }
static int max(int[][] arr) {
     int max=arr[0][0];
    for (int i = 0; i < arr.length; i++) {
        for (int j = 0; j < arr[i].length; j++) {
            if (arr[i][j]>max) {
                max=arr[i][j];
            }
        }
    }
    return max;
}
    static int[] even(int[][] arr) {
        for (int i = 0; i < arr.length; i++) {
            for (int j = 0; j < arr[i].length; j++) {
                if (arr[i][j]%2==0) {
                    System.out.println("It is even number"+arr[i][j]);
                }
                if(arr[i][j]%2!=0){
                    System.out.println("It is odd number"+arr[i][j]);
                }

            }
        }
        return null;
    }

}