content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.alibaba.jstorm.utils;
  
  import java.io.Serializable;
  import java.util.Objects;
  
  public class Pair<F, S> implements Serializable {
      private static final long serialVersionUID = -5514532854805616133L;
  
      private F first;
      private S second;
  
      public Pair() {
      }
  
      public Pair(F first, S second) {
          this.first = first;
          this.second = second;
      }
  
      public F getFirst() {
          return first;
      }
  
      public void setFirst(F first) {
          this.first = first;
      }
  
      public S getSecond() {
          return second;
      }
  
      public void setSecond(S second) {
          this.second = second;
      }
  
      @Override
      public boolean equals(Object other) {
          if (this == other) {
              return true;
          }
          if (!(other instanceof Pair)) {
              return false;
          }
          Pair<?, ?> otherPair = (Pair<?, ?>) other;
          // Arrays are very common as values and keys, so deepEquals is mandatory
          return Objects.deepEquals(this.first, otherPair.first)
                  && Objects.deepEquals(this.second, otherPair.second);
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(first, second);
      }
  
      @Override
      public String toString() {
          StringBuilder sb = new StringBuilder();
          sb.append("first:" + first);
          sb.append(":");
          sb.append("second:" + second);
          return sb.toString();
      }
  }
  