# Input numbers in 2d array and find the sum of each column in Java

###### Two Dimensional Array - Question 6

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

**Q6)** Write a program in Java to input numbers in a 3X3 integer matrix (2d array) and find the sum of each column separately.

#### Program

```
import java.util.Scanner;
public class Q6
{
public static void main(String args[])
{
int a[][]=new int[3][3], r,c,cs;
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();
}
}
for(r=0; r<3; r++)
{
cs=0;
for(c=0; c<3; c++)
{
System.out.print(a[r][c]+" ");
cs=cs+a[c][r];
}
System.out.println(" Column Sum = "+cs);
}
}
}
```

#### Output

Enter 9 numbers 18 12 72 10 15 45 38 5 64 18 12 72 Column Sum = 66 10 15 45 Column Sum = 32 38 5 64 Column Sum = 181