1 篇笔记 写笔记

1. #0

   FrancisQiu

   qiu***[email protected]

   10

   此处的输出采用的 for 语句,在数组中也可以通过 for-each 语句对数组的每一个元素输出,比如:

   import java.lang.*;
   public class Main{ 
    public static void main(String args[]) { 
    String[] runoobs = new String[3]; 
    runoobs[0] = "菜鸟教程"; 
    runoobs[1] = "菜鸟工具"; 
    runoobs[2] = "菜鸟笔记"; 
    for (String obj:runoobs){ 
    System.out.println(obj+"\n"); 
    } 
    }
   }

   也可以通过数组列表进行迭代遍历打印元素,例如:

   import java.util.*;
   import java.lang.*;
   public class Main { 
    public static void main(String args[]) { 
    ArrayList<String> runoobs = new ArrayList<String>(); 
    runoobs.add("www."); 
    runoobs.add("runoob"); 
    runoobs.add(".com"); 
    for (Iterator<String> iterator = runoobs.iterator(); iterator.hasNext(); System.out.println(iterator.next())) { 
    
    } 
    }
   }

   FrancisQiu

   qiu***[email protected]

   8年前 (2018年07月01日)