diff --git a/TwoSum.java b/TwoSum.java
new file mode 100644
index 00000000..f049854c
--- /dev/null
+++ b/TwoSum.java
@@ -0,0 +1,26 @@
+import java.util.HashMap;
+
+public class TwoSum {
+    public int[] twoSum(int[] nums, int target) {
+        HashMap<Integer, Integer> numToIndex = new HashMap<>();
+        
+        for (int i = 0; i < nums.length; i++) {
+            int complement = target - nums[i];
+            if (numToIndex.containsKey(complement)) {
+                return new int[] { numToIndex.get(complement), i };
+            }
+            numToIndex.put(nums[i], i);
+        }
+        
+        throw new IllegalArgumentException("No solution found.");
+    }
+
+    public static void main(String[] args) {
+        TwoSum solution = new TwoSum();
+        int[] nums = {2, 7, 11, 15};
+        int target = 9;
+        int[] result = solution.twoSum(nums, target);
+        System.out.println("Indices of the two numbers that add up to the target:");
+        System.out.println(result[0] + " " + result[1]);
+    }
+}