Implement equals method to compare Pair objects

Author: rohithsh

swan-assist/src/main/java/de/fraunhofer/iem/swan/assist/util/Pair.java

@@ -1,5 +1,7 @@
 package de.fraunhofer.iem.swan.assist.util;
 
+import java.util.Objects;
+
 public class Pair<T,U> {
     private final T key;
     private final U value;
@@ -16,4 +18,31 @@ public T getKey() {
     public U getValue() {
         return this.value;
     }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+
+        if (obj == null || getClass() != obj.getClass()) {
+            return false;
+        }
+
+        Pair<?, ?> pair = (Pair<?, ?>) obj;
+
+        if (!Objects.equals(key, pair.key)) {
+            return false;
+        }
+
+        return Objects.equals(value, pair.value);
+    }
+
+    @Override
+    public int hashCode() {
+        int result = key != null ? key.hashCode() : 0;
+        result = 31 * result + (value != null ? value.hashCode() : 0);
+        return result;
+    }
+
 }