java.util.Vector.containsAll() 方法

package com.codingdict;

import java.util.Vector;

public class VectorDemo {
   public static void main(String[] args) {

      // create three empty Vectors vec and vectest with an initial capacity of 4      
      Vector<Integer> vec = new Vector<Integer>(4);
      Vector<Integer> vectest = new Vector<Integer>(4);
      Vector<Integer> vecdiff = new Vector<Integer>(4);

      // use add() method to add elements in the vector vec
      vec.add(4);
      vec.add(3);
      vec.add(2);   

      // use add() method to add elements in the vector vectest
      vectest.add(4);
      vectest.add(3);
      vectest.add(2);

      // use add() method to add elements in the vector vecdiff
      vecdiff.add(4);
      vecdiff.add(3);
      vecdiff.add(12);

      // let us check vec and vectest
      System.out.println("Checking contents in vec and vectest :- "+vectest.containsAll(vec));   

      // let us check vec and vecdiff
      System.out.println("Checking contents in vec and vecdiff :- "+vecdiff.containsAll(vec));
   }
}