无聊，发一个Iterator遍历的例子
package com.heji.test;import java.util.ArrayList;import java.util.Iterator;import java.util.List;/** * 测试Iterator * * @author heji * */public class TestIterator {public static void main(String[] args) {List<String> list = new ArrayList<String>();list.add("a");list.add("b");list.add("c");list.add("d");Iterator<String> it = list.iterator();while(it.hasNext()) {System.out.print(it.next() + " ");}System.out.println();for(Iterator<String> iterator = list.iterator(); iterator.hasNext();) {System.out.print(iterator.next() + " ");}}}