看完《书剑恩仇录》，黯然神伤
浩浩愁，茫茫劫 短歌终，明月缺 郁郁佳城，中有碧血 碧亦有时尽，血亦有时灭 一缕香魂无断绝 是耶非耶？化为蝴蝶
Java Concurrent框架之阻塞队列（Blocking queue）
引子： 大家上过操作系统的都知道“生产者－消费者（Producer-Consumer）”模型，主要讨论的是进程（线程）间的互斥和同步问题，关键是对锁（lock）的申请、独占和释放，在这里我就不罗嗦了。原先我写的Java代码如下： public class Producer extends Thread{ private ProductList products = [more...]
Object Modeling Strategies (IV)
Str#6. "Four Kinds of Features" Strategy // identifying purpose and features- Be certain to include features that cover the following:1. Log important information.2. Conduct [more...]
Java code name
VERSION CODE NAME RELEASE DATEJDK 1.1.4 Sparkler Sept 12, 1997JDK 1.1.5 Pumpkin Dec 3, 1997JDK 1.1.6 Abigail April 24, 1998JDK 1.1.7 Brutus Sept 28, [more...]
“软件危机”时总结的坏的编程习惯——我们是否依旧守着古风？
1、乱用GOTO语句（上下跳转看起来非常方便）2、大量使用全局变量（无法控制它们值的变化，例如在非预期的子程序的执行中）3、不声明变量类型就使用（隐含类型可以在Fortran中使用，例如，一个实数可以截短为一个整数而没有引起程序员的注意）4、非结构化的、组织混乱的大块代码用于多个任务（一块可能有上千行代码）5、注释行太少（由于它们并不被执行！） [more...]
Tomcat 5.5.9 不支持switch()？
ServiceExceptionType：package pqp.service;public enum ServiceExceptionType{ DB_FAILURE ,USER_EXISTED [more...]
Object Modeling Strategies (III)
Identifying system purpose and featuresA purpose is an overall desired result, the aim of one's actions. Features are specific capabilities for the system under consideration.This section [more...]
Object Modeling Strategies (II)
Str#1d. "Invest an Hour" Strategy // activities and model components- Rather than philosophize endlessly, invest an hour in each of several different ways of modeling a particularly challenging [more...]