java.util.Collections.fill() 方法

package com.codingdict;

import java.util.*;

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

      // create array list object       
      List arrlist = new ArrayList();

      // populate the list
      arrlist.add("A");
      arrlist.add("B");
      arrlist.add("C");

      System.out.println("List elements before fill: "+arrlist);

      // fill the list with 'TP'
      Collections.fill(arrlist,"TP");

      System.out.println("List elements after fill: "+arrlist);    
   }
}