++

решение проблемы совместимости с java 1.8._4xx

src/Common/Utils/Pair.java

@@ -0,0 +1,95 @@
+package Common.Utils;
+import java.io.Serializable;
+public class Pair<K, V> implements Serializable {
+    /**
+     * Key of this <code>Pair</code>.
+     */
+    private K key;
+    /**
+     * Value of this this <code>Pair</code>.
+     */
+    private V value;
+    /**
+     * Creates a new pair
+     *
+     * @param key   The key for this pair
+     * @param value The value to use for this pair
+     */
+    public Pair(K key, V value) {
+        this.key = key;
+        this.value = value;
+    }
+    /**
+     * Gets the key for this pair.
+     *
+     * @return key for this pair
+     */
+    public K getKey() {
+        return key;
+    }
+    /**
+     * Gets the value for this pair.
+     *
+     * @return value for this pair
+     */
+    public V getValue() {
+        return value;
+    }
+    /**
+     * <p><code>String</code> representation of this
+     * <code>Pair</code>.</p>
+     *
+     * <p>The default name/value delimiter '=' is always used.</p>
+     *
+     * @return <code>String</code> representation of this <code>Pair</code>
+     */
+    @Override
+    public String toString() {
+        return key + "=" + value;
+    }
+    /**
+     * <p>Generate a hash code for this <code>Pair</code>.</p>
+     *
+     * <p>The hash code is calculated using both the name and
+     * the value of the <code>Pair</code>.</p>
+     *
+     * @return hash code for this <code>Pair</code>
+     */
+    @Override
+    public int hashCode() {
+        // name's hashCode is multiplied by an arbitrary prime number (13)
+        // in order to make sure there is a difference in the hashCode between
+        // these two parameters:
+        //  name: a  value: aa
+        //  name: aa value: a
+        return key.hashCode() * 13 + (value == null ? 0 : value.hashCode());
+    }
+    /**
+     * <p>Test this <code>Pair</code> for equality with another
+     * <code>Object</code>.</p>
+     *
+     * <p>If the <code>Object</code> to be tested is not a
+     * <code>Pair</code> or is <code>null</code>, then this method
+     * returns <code>false</code>.</p>
+     *
+     * <p>Two <code>Pair</code>s are considered equal if and only if
+     * both the names and values are equal.</p>
+     *
+     * @param o the <code>Object</code> to test for
+     *          equality with this <code>Pair</code>
+     * @return <code>true</code> if the given <code>Object</code> is
+     * equal to this <code>Pair</code> else <code>false</code>
+     */
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o instanceof Pair) {
+            Pair pair = (Pair) o;
+            if (key != null ? !key.equals(pair.key) : pair.key != null) return false;
+            if (value != null ? !value.equals(pair.value) : pair.value != null) return false;
+            return true;
+        }
+        return false;
+    }
+}
+