java中对集合对象list的几种循环访问

java中对集合对象list的几种循环访问的总结如下 
1 经典的for循环 

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 1 public static void main(String[] args) {       
 2                
 3     List<String> list = new ArrayList();       
 4     list.add("123");       
 5     list.add("java");       
 6     list.add("j2ee");       
 7     System.out.println("=========经典的for循环=======");       
 8     for(int i=0; i<list.size();i++){       
 9     System.out.println(list.get(i));       
10    }       
11 }      

2 增强的for循环

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 1 public static void main(String[] args) {       
 2                
 3     List<String> list = new ArrayList();       
 4     list.add("123");       
 5     list.add("java");       
 6     list.add("j2ee");       
 7     System.out.println("=========Java1.6的for循环=======");       
 8     for(String s:list){       
 9     System.out.println(s);       
10     }       
11 }  

3 Iterate的使用

View Code

 1 public static void main(String[] args) {       
 2                
 3     List<String> list = new ArrayList();       
 4     list.add("123");       
 5     list.add("java");       
 6     list.add("j2ee");       
 7     System.out.println("=========Iterate循环=======");       
 8     Iterator<String> iter = list.iterator();       
 9     while(iter.hasNext()){       
10     System.out.println(iter.next());       
11     }       
12                
13 }