content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * 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.android.apksig.internal.util;
  
  /**
   * Pair of two elements.
   */
  public final class Pair<A, B> {
      private final A mFirst;
      private final B mSecond;
  
      private Pair(A first, B second) {
          mFirst = first;
          mSecond = second;
      }
  
      public static <A, B> Pair<A, B> of(A first, B second) {
          return new Pair<A, B>(first, second);
      }
  
      public A getFirst() {
          return mFirst;
      }
  
      public B getSecond() {
          return mSecond;
      }
  
      @Override
      public int hashCode() {
          final int prime = 31;
          int result = 1;
          result = prime * result + ((mFirst == null) ? 0 : mFirst.hashCode());
          result = prime * result + ((mSecond == null) ? 0 : mSecond.hashCode());
          return result;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (this == obj) {
              return true;
          }
          if (obj == null) {
              return false;
          }
          if (getClass() != obj.getClass()) {
              return false;
          }
          @SuppressWarnings("rawtypes")
          Pair other = (Pair) obj;
          if (mFirst == null) {
              if (other.mFirst != null) {
                  return false;
              }
          } else if (!mFirst.equals(other.mFirst)) {
              return false;
          }
          if (mSecond == null) {
              if (other.mSecond != null) {
                  return false;
              }
          } else if (!mSecond.equals(other.mSecond)) {
              return false;
          }
          return true;
      }
  }
  