By
    
      yusijia
    
  
    
    Updated:
    
  
	
		
		
		
		
		http://www.cnblogs.com/rollenholt/archive/2011/06/03/2070577.html
Student.java:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46
   |  package lianxi;
 
  public class Student { 	 	private String sid; 	 	private	String name; 	 	public Student() 	{ 		sid = "-1"; 		name = "nobody"; 	} 	 	public Student(String sid, String name) 	{ 		setSid(sid); 		setName(name); 	} 	 	public String getSid() 	{ 		return sid; 	} 	 	public void setSid(String sid) 	{ 		this.sid = sid; 	} 	 	public String getName() 	{ 		return name; 	} 	 	public void setName(String name) 	{ 		this.name = name; 	} 	 	public String toString() 	{ 		return this.sid + ": " + this.name; 	} }
   | 
 
Students.java:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
   | package lianxi;
  import java.util.Iterator;
 
  public class Students implements Iterable{ 	     private Student[] stus;                 public Students(int size)     {     	stus = new Student[size];     	for (int i = 0; i < size; i++) {               stus[i] = new Student(String.valueOf(i), "学生" + String.valueOf(i));           }     }          public Iterator iterator() {           return new StudentIterator();       }               private class StudentIterator implements Iterator     {     	         private int index = 0;                   public boolean hasNext() {               return index != stus.length;           }                    public Object next() {               return stus[index++];           }                  public void remove() {               throw new UnsupportedOperationException();           }     } }
   | 
 
Lianxix.java:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
   | package lianxi;
  import java.util.*; import java.io.*; import java.lang.annotation.Documented; import java.lang.annotation.Retention; import java.lang.reflect.InvocationTargetException;
  public class lianxix { 	 	public static void main(String[] args)  	{ 		         Students students = new Students(10);                        for (Object obj : students) {               Student stu = (Student) obj;               System.out.println(stu.getSid() + ":" + stu.getName());           } 	}   } 输出: 0:学生0 1:学生1 2:学生2 3:学生3 4:学生4 5:学生5 6:学生6 7:学生7 8:学生8 9:学生9
   |