Java program to take 2D array as input from user.

TwoDArrayInput.java

import java.util.Scanner;

public class TwoDArrayInput{
    
    public static void main(String args[]){
        
       System.out.print("Enter 2D array size : ");
       Scanner sc=new Scanner(System.in);
       int rows=sc.nextInt();
       int columns=sc.nextInt();
       
       System.out.println("Enter array elements : ");    
        
       int twoD[][]=new int[rows][columns];
        
          
        for(int i=0; i<rows;i++)
         {            
            for(int j=0; j<columns;j++)
            {
                twoD[i][j]=sc.nextInt();
            }
         }
        System.out.print("\nData you entered : \n");
        for(int []x:twoD){
            for(int y:x){
            System.out.print(y+"        ");
            }
            System.out.println();
        }
        
    }  
    
}

thank you

cool

/*

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• To change this template file, choose Tools | Templates
• and open the template in the editor.
  */
  package com.mycompany.mavenproject3;

import java.util.Scanner;
import java.util.Arrays;

/**
*

• @author mimoe
  */
  public class Exercise {

System.out.println(" Enter number of Rows");
int row=s.nextInt();
System.out.println(" Enter number of col");
int col=s.nextInt();
int arr[][]=new int [row][col];
System.out.println(" Enter Elements of Array");
for ( row = 0; row < arr.length; row++) {
for ( col = 0; col < arr[row].length; col++) {

         arr[row][col]=s.nextInt();
     }
 }
 for ( row = 0; row < arr.length; row++) {
     for (col = 0; col < arr[row].length; col++) {
         System.out.print(arr[row][col]+" ");
         
     }
     System.out.println();
 }

}
}

import java.io.*;
import java.util.Arrays;
//package assignments.ass23;
import java.util.Scanner;

/**

• 2darray
  */
  public class darray {
  public static void getArray(int n,int[][] array) {
  Scanner sc = new Scanner(System.in);
  array = new int[n][n];
  System.out.println("Enter the elements :");
  for(int i= 0;i<n;i++){
  for(int j = 0;j<n;j++){
  array[i][j] = sc.nextInt();
  }

   }
  

  }
  public static void displayArray(int n,int[][] array) {

   System.out.println("the elements are :");
   for(int i= 0;i<n;i++){
       for(int j = 0;j<n;j++){
           System.out.println("\t"+array[i][j]);
       }
       System.out.println("\n");
   }
  

  }
  public static void main(String[] args) {
  int n;
  int[][] array;
  Scanner sc = new Scanner(System.in);
  System.out.println("Enter the limit");
  n = sc.nextInt();
  array = new int[n][n];
  getArray(n, array);
  displayArray(n, array);
  }
  }

please let me know where I went wrong.

import java.util.Scanner;
public class Multidimensional_Arrays {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int flates[][] = new int[2][3];
System.out.println("Enter array elements = ");
for (int i = 0; i < flates.length; i++) {
for (int j = 0; j <= flates.length; j++) {
flates[i][j] = sc.nextInt();
System.out.print(flates[i][j] + " ");
}
}
System.out.println();
//reverse
System.out.println("Reverse of Multi-dimensional Array");
for (int i = flates.length - 1; i >= 0; i--) {
for (int j = flates.length; j >= 0; j--) {
System.out.print(flates[i][j] + " ");
}
}
}
}

Bro your "x" and "y" are the size of row and column, so in the line
// Let's consider your row =2, and column=2
array[x][y] = input.nextInt();
array[2][2] = 20 // let's consider ur 1st input is 20.
You are directly giving input to, the 2nd row 2nd column element.
So for the first input i.e., array[2][2] will take input as 20. In the next iteration, again you are giving the input for the same array[2][2]th element.
There you will get the ArrayIndexOutOfRange
After