替换ArrayList指定索引处的元素

import java.util.ArrayList;

 

public class Main {// from N o w J a v a . c o m

 

  public static void main(String[] args) {

    ArrayList arrayList = new ArrayList();

   

    arrayList.add("1");

    arrayList.add("2");

    arrayList.add("3");

   

    arrayList.set(1,"REPLACED ELEMENT");

 

    System.out.println("ArrayList contains...");


    for(int index=0; index < arrayList.size(); index++)

      System.out.println(arrayList.get(index));

   //来 自 时代Java - N o w  J a v a . c o m

  }

}