New JNI bindings

src/com/github/rjeschke/neetutils/collections/Tuple.java

+/*
+ * Copyright (C) 2012 René Jeschke <rene_jeschke@yahoo.de>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.rjeschke.neetutils.collections;
+
+import com.github.rjeschke.neetutils.Objects;
+
+/**
+ * 
+ * @author René Jeschke (rene_jeschke@yahoo.de)
+ * 
+ * @param <A>
+ * @param <B>
+ */
+public class Tuple<A, B>
+{
+  public final A a;
+  public final B b;
+
+  public Tuple(final A a, final B b)
+  {
+    this.a = a;
+    this.b = b;
+  }
+
+  public final static <A, B> Tuple<A, B> of(final A a, final B b)
+  {
+    return new Tuple<A, B>(a, b);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return (this.a == null ? 0 : this.a.hashCode()) * 31 + (this.b == null ? 0 : this.b.hashCode());
+  }
+
+  @Override
+  public boolean equals(final Object obj)
+  {
+    if (obj == this)
+    {
+      return true;
+    }
+
+    if (!(obj instanceof Tuple))
+    {
+      return false;
+    }
+
+    final Tuple<?, ?> p = (Tuple<?, ?>)obj;
+
+    return Objects.equals(this.a, p.a) && Objects.equals(this.b, p.b);
+  }
+
+  @Override
+  public String toString()
+  {
+    return "(" + this.a.toString() + ", " + this.b.toString() + ")";
+  }
+}