遍历List的三种方式
① Iterator迭代器方式
② 增强for循环
③ 普通的循环
代码展示:
//SearchListTest.java
package com.ylaihui.list;
import java.util.ArrayList;
import java.util.Iterator;
public class SearchListTest {
public static void main(String[] args) {
ArrayList list = new ArrayList();
list.add(100);
list.add(200);
list.add(new String("ylaihui"));
// 1. 迭代器
Iterator iterator = list.iterator();
while(iterator.hasNext()){
System.out.println(iterator.next());
}
// 2. 增强for循环
for (Object obj : list){
System.out.println(obj);
}
// 3. 普通循环
for (int i = 0; i < list.size(); i++) {
System.out.println(list.get(i));
}
}
}