博客

1. 迭代器遍历
2. 增强for遍历
3. 普通for遍历

package javabase;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class ListTest {
    public static void main(String[] args) {
        List<String> lists = new ArrayList<String>();
        lists.add("111111111");
        lists.add("222222222");
        lists.add("333333333");

        System.out.println("增强for:");
        for (String obj : lists){
            System.out.println("value:"+obj);
        }

        System.out.println("普通for:");
        for (int i = 0; i< lists.size(); i++){
            System.out.println("value:"+lists.get(i));
        }

        System.out.println("迭代器:");
        Iterator it = lists.iterator();
        while (it.hasNext()){
           Object obj = it.next();
            System.out.println("value:"+obj);
        }
    }
}