<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[AS_1986的博客]]></title><description><![CDATA[一个努力的过客]]></description><link>https://blog.youkuaiyun.com/AS_1986</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; AS_1986]]></copyright><item><title><![CDATA[JAVA画个I Love YOU]]></title><link>https://blog.youkuaiyun.com/AS_1986/article/details/82710554</link><guid>https://blog.youkuaiyun.com/AS_1986/article/details/82710554</guid><author>AS_1986</author><pubDate>Sat, 15 Sep 2018 06:14:11 +0800</pubDate><description><![CDATA[画画图


class  xin
{
    public static void main(String[] args) 
    {            System.out.print(&quot;******************************************************************************************************...]]></description><category></category></item><item><title><![CDATA[list集合写的一个简单学生管理信息]]></title><link>https://blog.youkuaiyun.com/AS_1986/article/details/82710549</link><guid>https://blog.youkuaiyun.com/AS_1986/article/details/82710549</guid><author>AS_1986</author><pubDate>Sat, 15 Sep 2018 06:02:40 +0800</pubDate><description><![CDATA[Student类

小白作业


import java.io.Serializable;

public class Student implements Serializable{
        //private static final long serialVersionUID = 6298072372471937623L;
                private int id...]]></description><category></category></item><item><title><![CDATA[JDBC工具类]]></title><link>https://blog.youkuaiyun.com/AS_1986/article/details/82695128</link><guid>https://blog.youkuaiyun.com/AS_1986/article/details/82695128</guid><author>AS_1986</author><pubDate>Thu, 13 Sep 2018 21:29:16 +0800</pubDate><description><![CDATA[配置文件db.properties


url =jdbc:mysql://localhost:3306/sys
username =root
password =5201314
className =com.mysql.jdbc.Driver
 


JdbcUtil.java


import java.io.IOException;
import java.io.InputStream;
i...]]></description><category></category></item><item><title><![CDATA[懒汉和饿汉单例]]></title><link>https://blog.youkuaiyun.com/AS_1986/article/details/81560305</link><guid>https://blog.youkuaiyun.com/AS_1986/article/details/81560305</guid><author>AS_1986</author><pubDate>Fri, 10 Aug 2018 11:59:30 +0800</pubDate><description><![CDATA[1,饿汉式：在程序启动或单件模式类被加载的时候，单件模式实例就已经被创建。
2,懒汉式：当程序第一次访问单件模式实例时才进行创建。
如何选择：如果单件模式实例在系统中经常会被用到，饿汉式是一个不错的选择。
反之如果单件模式在系统中会很少用到或者几乎不会用到，那么懒汉式是一个不错的选择。

饿汉式  类加载的时候就会初始化  线程安全

public class Single1 {
        ...]]></description><category></category></item><item><title><![CDATA[JVM内存初学 堆、栈、方法区]]></title><link>https://blog.youkuaiyun.com/AS_1986/article/details/77513060</link><guid>https://blog.youkuaiyun.com/AS_1986/article/details/77513060</guid><author>AS_1986</author><pubDate>Wed, 23 Aug 2017 22:56:24 +0800</pubDate><description><![CDATA[jvm的堆，栈，方法区]]></description><category></category></item><item><title><![CDATA[自定义异常]]></title><link>https://blog.youkuaiyun.com/AS_1986/article/details/77365965</link><guid>https://blog.youkuaiyun.com/AS_1986/article/details/77365965</guid><author>AS_1986</author><pubDate>Fri, 18 Aug 2017 10:22:52 +0800</pubDate><description><![CDATA[除数异常，都是得继承Exception 
//除数零类 
public class Ling extends Exception{ 
        public Ling(String msg){ 
            super(msg); 
        } 
}//除数为负数异常类public class Fu extends Exception{ 
        public Fu]]></description><category></category></item></channel></rss>