Java示例在向量中交换两个元素

import java.util.Vector;

import java.util.Collections;



public class Demo {

   public static void main(String[] args) {

      Vector v = new Vector();

      v.add("1");

      v.add("2");

      v.add("3");

      v.add("4");

      v.add("5");

      Collections.swap(v,0,4);

      System.out.println("Result after swap Vector contains : " + v);

   }

}