Java中的两种for循环介绍

package com.zxd.test;
import java.util.list;
import org.hibernate.hibernateexception;
import org.hibernate.query;
import org.hibernate.session;
import org.hibernate.sessionfactory;
import org.hibernate.cfg.configuration;
import com.zxd.bean.house;
import com.zxd.util.queryproperty;
/**
* hql封闭查询的测试类
* @author zhang
*
*/
public class testhouse {
public static void main(string[] args) {
//公共的成员变量
sessionfactory sf = null;
session session = null;
queryproperty qp = new queryproperty();
//封装查询的数据
qp.settitle("%好房%");
qp.setstreet_id("1002");
qp.settype_id("1004");
qp.setlow_price(20);
qp.sethigh_price(200);
qp.setsmall_floorage(50);
qp.setbig_floorage(180);
//hql语句
stringbuffer sb = new stringbuffer();
sb.append("from house where ");
sb.append("(title like :title) ");
sb.append("and (type_id like :type_id) ");
sb.append("and (street_id like :street_id) ");
sb.append("and (price between :low_price and :high_price) ");
sb.append("and (floorage between :small_floorage and :big_floorage)");
try {
//开始执行查询
sf = new configuration().configure().buildsessionfactory();
session = sf.opensession();
query query = session.createquery(sb.tostring());
query.setproperties(qp);
list<house> list = query.list();
//第一种用：的循环
/*for(house house:list){
system.out.println("标题是："+house.gettitle());
system.out.println("面积是："+house.getfloorage());
system.out.println("价格是："+house.getprice());
system.out.println("区是："+house.getstreet().getdistrict().getname());
system.out.println("街道是："+house.getstreet().getname());
system.out.println("----------------------------------");
}*/
//第二种循环
for(int i = 0;i<list.size();i++){
system.out.println("标题是："+list.get(i).gettitle());
system.out.println("面积是："+list.get(i).getfloorage());
system.out.println("价格是："+list.get(i).getprice());
system.out.println("区是："+list.get(i).getstreet().getdistrict().getname());
system.out.println("街道是："+list.get(i).getstreet().getname());
system.out.println("----------------------------------");
}
} catch (hibernateexception e) {
// todo auto-generated catch block
e.printstacktrace();
}finally{
session.close();
sf.close();
}
}
}

上面例子中的第一种循环是我没有记住的，用了关键字符“:”,一般这种循环是用来对一个集合的遍历上的（list<house>、map）中的用的很方便。

第二种循环是普通的循环我这是java中最常见的一种for循环。