package com.m0226.test; import org.junit.Test; import com.m0226.basic.ArrayList; import com.m0226.basic.Iterator; public class TestArrayList{ @Test public void testAdd(){ ArrayList list1=new ArrayList(); list1.add(0); list1.add(1); //list1.add(3, -1);//error //list1.remove(2);//error Iterator ite=list1.iterator(); while(ite.hasNext()){ System.out.println(ite.next()); } } }