diff --git a/JAVA/running_sum_in_array.java b/JAVA/running_sum_in_array.java
new file mode 100644
index 0000000..a610fae
--- /dev/null
+++ b/JAVA/running_sum_in_array.java
@@ -0,0 +1,33 @@
+package hacktoberfestcode;
+
+import java.util.Scanner;
+
+public class running_sum_in_array {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		Scanner s = new Scanner(System.in);
+		System.out.print("Enter the length of array: ");
+		int n = s.nextInt();
+		int nums[] = new int[n];
+		for(int i=0;i<n;i++) {
+			nums[i]= s.nextInt();
+		}
+		
+		int res[] = runningSum(nums);
+		for(int i=0;i<n;i++) {
+			System.out.print(res[i]+ " ");
+		}
+	}
+	
+	 public static int[] runningSum(int[] nums) {
+	        int res[]= new int[nums.length];
+	        res[0] = nums[0];
+	        for(int i=1;i<nums.length;i++){
+	            res[i]= nums[i]+res[i-1];
+	        }
+	        
+	        return res;
+	    }
+
+}