Usage of new API, cleanups (reduced)

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() + ")";
-  }
-}