# Input numbers in 2d array and find sum of all numbers in Java

###### Two Dimensional Array - Question 1

In this question, we will see how to input numbers in a 3X3 integer matrix (2d array) and find the sum of all the numbers in Java programming. To know more about two dimensional array click on the two dimensional array lesson.

**Q1)** Write a program in Java to input numbers in a 3X3 integer matrix (2d array) and find the sum of all the numbers.

#### Program

```
import java.util.Scanner;
public class Q1
{
public static void main(String args[])
{
int a[][]=new int[3][3], r,c,s=0;
Scanner sc=new Scanner(System.in);
System.out.println("Enter 9 numbers");
for(r=0; r<3; r++)
{
for(c=0; c<3; c++)
{
a[r][c]=sc.nextInt();
s=s+a[r][c];
}
}
System.out.println("Sum of all the numbers = "+s);
}
}
```

#### Output

Enter 9 numbers 12 8 13 4 34 17 15 32 60 Sum of all the numbers = 195