Determines if the given lists contain the same elements. We suppose that all the elements of the given lists are different.

        
//package com.javadocking.util;

import java.util.List;

/**
 * This class contains a collection of static utility methods for java.util.Collection objects.
 * 
 * @author Heidi Rakels.
 */
public class CollectionUtil
{

  /**
   * Determines if the given lists contain the same elements. We suppose that all the elements of the given lists 
   * are different.
   * 
   * @param   firstList           The first list.
   * @param   secondList           The second list.
   * @return                 True if the given lists contain the same elements, false otherwise.
   */
  public static boolean sameElements(List firstList, List secondList)
  {
    
    // The size hould be the same, otherwise stop.
    if (firstList.size() != secondList.size())
    {
      return false;
    }
    
    // Iterate over the elements of the first list.
    for (int index = 0; index < firstList.size(); index++)
    {
      // Check if the element is also in the second list.
      if (!secondList.contains(firstList.get(index)))
      {
        return false;
      }
    }
    
    // They heve the same elements.
    return true;
    
  }

}

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Determines if the given lists contain the same elements. We suppose that all the elements of the given lists are different. : List « Collections Data Structure « Java

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