Matrix.java

import java.util.*;

public class Matrix {
    public static boolean search(int mat[][],int key) {
        for(int i=0;i<mat.length;i++){
            for(int j=0;j<mat[0].length;j++){
                if (mat[i][j]==key) {
                    System.out.println("Found at cell (" + i + "," + j + ")");
                    return true;
                }
            }
        }
        System.out.println("Key not found");
        return false;
    }
    public static void main(String[] args) {
        int mat[][] = new int[3][3];
        int n = mat.length , m = mat[0].length;

        Scanner sc = new Scanner(System.in);
        for(int i  =0;i<n;i++){
            for(int j=0;j<m;j++){
                mat[i][j] = sc.nextInt();
            }
        }
        //output
        for(int i=0;i<n;i++){
            for(int j=0;j<m;j++){
                System.out.print(mat[i][j] + " ");
            }
            System.out.println();
        }
        search(mat, 5);
    }
}