Returns an integer hash code representing the given double array value. : hashCode « Class Definition « Java Tutorial

1. Java Tutorial
2. Class Definition
3. hashCode

import java.io.File;

/* 
 * 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.
 *
 *
 */
public class Main {
  /**
   * Returns an integer hash code representing the given double array value.
   * 
   * @param value the value to be hashed (may be null)
   * @return the hash code
   * @since 1.2
   */
  public static int hash(double[] value) {
      if (value == null) {
          return 0;
      }
      int result = value.length;
      for (int i = 0; i < value.length; ++i) {
          result = result * 31 + hash(value[i]);
      }
      return result;
  }
  /**
   * Returns an integer hash code representing the given double value.
   * 
   * @param value the value to be hashed
   * @return the hash code
   */
  public static int hash(double value) {
      long bits = Double.doubleToLongBits(value);
      return (int)(bits ^ (bits >>> 32));
  }
}