diff --git a/Problem1.java b/Problem1.java
index e69de29b..26b0a8a6 100644
--- a/Problem1.java
+++ b/Problem1.java
@@ -0,0 +1,19 @@
+class Problem1 {
+    public int[] twoSum(int[] nums, int target) {
+        HashMap<Integer, Integer> map = new HashMap<>();
+
+        for(int i = 0; i < nums.length; i++) {
+            map.put(nums[i], i);
+        }
+
+        for (int i = 0; i < nums.length; i++) {
+            int cmp = target - nums[i];
+            if (map.containsKey(cmp) && map.get(cmp) != i) {
+                return new int[]{map.get(cmp),i};
+            }
+            map.put(nums[i], i);
+        }
+
+        return new int[]{};
+    }
+}
diff --git a/Problem2.java b/Problem2.java
index e69de29b..bed97f87 100644
--- a/Problem2.java
+++ b/Problem2.java
@@ -0,0 +1,33 @@
+class Problem2 {
+	
+	public static int findMax(int[] weights, int[] profit, int totalCapacity)
+	{
+		int n = totalCapacity;
+		int m = weights.length;
+		int[][]  dp = new int[m+1][n+1];
+		
+		for(int i = 1; i <= m; i++ )
+		{
+			for(int j = 1; j <= n ; j++)
+			{
+				 if(weights[i-1] > j)
+				{
+					dp[i][j] = dp[i-1][j];
+				}else {							
+					dp[i][j] = Math.max(dp[i-1][j] , profit[i-1]+dp[i-1][j-weights[i-1]]);
+				}
+			}
+		}
+		return dp[m][n];
+		
+	}
+	
+	public static void main(String args[])
+	{
+		int[] items = {10,20,30,40};
+		int[] profit = {130,110,170,190};
+		int capacity = 50;
+	
+		System.out.println(findMax(items, profit, capacity));
+	}
+}