日期:2014-05-20 浏览次数:20829 次
package com.nbgnuskin.collection;
import java.util.*;
public class IteratorTest {
public IteratorTest() {
// TODO Auto-generated constructor stub
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Collection c = new HashSet();
c.add(new Name("a1","b1"));
c.add(new Name("a2222","b2"));
c.add(new Name("a3","b3"));
c.add(new Name("a4","b4"));
// while(i.hasNext())
// {
// Name n = (Name) i.next();
// if(n.getfirstName().length() > 3)
// {
// i.remove();
// }
// System.out.println(n.getfirstName() + " " + n.getfirstName().length());
// }
for(Iterator i = c.iterator();i.hasNext();)
{
Name n = (Name)i.next();
if (n.getfirstName().length() > 3) {
i.remove(); }
System.out.println(n.getfirstName() + " " + n.getfirstName().length());
}
}
}
public static void main(String[] args) {
Collection c = new HashSet();
c.add(new Name("a1","b1"));
c.add(new Name("a2222","b2"));
c.add(new Name("a3","b3"));
c.add(new Name("a4","b4"));
// while(i.hasNext())
// {
// Name n = (Name) i.next();
// if(n.getfirstName().length() > 3)
// {
// i.remove();
// }
// System.out.println(n.getfirstName() + " " + n.getfirstName().length());
// }
for(Iterator i = c.iterator();i.hasNext();)
{
System.out.println(i.toString());
Name n = (Name)i.next();
if (n.getFirstName().length() > 3) {
c.remove(i); //这一句,看区别 }
System.out.println(n.getFirstName() + " " + n.getFirstName().length());