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();
        }
        
    }  
    
}

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