12 2015 档案

Thinking in Java,Fourth Edition(Java 编程思想,第四版)学习笔记(八)之Reusing Classes
摘要：The trick is to use the classes without soiling the existing code. 1. composition--simply create objects of your existing class inside the new class.... 阅读全文
posted @ 2015-12-31 23:42 nicke 阅读(273) 评论(0) 推荐(0)
Thinking in Java,Fourth Edition(Java 编程思想,第四版)学习笔记(七)之Access Control
摘要：Access control ( or implementation hiding) is about "not getting it right the first time."refactoringa primary consideration in object-oriented design... 阅读全文
posted @ 2015-12-29 22:55 nicke 阅读(437) 评论(0) 推荐(0)
Thinking in Java,Fourth Edition(Java 编程思想,第四版)学习笔记(六)之Initialization & Cleanup
摘要：Two of these safety issues are initialization and cleanup. initialization -> bug cleanup -> running out of resources (most notably, memory) Java ... 阅读全文
posted @ 2015-12-26 22:56 nicke 阅读(369) 评论(0) 推荐(0)
ValidForm.js的使用注意点
摘要：dataType的值不能为"", 否则会导致错误发生：Uncaught TypeError: Cannot read property '0' of null，http请求可以发送，但是callback不能触发 阅读全文
posted @ 2015-12-17 12:00 nicke 阅读(316) 评论(0) 推荐(0)
Thinking in Java,Fourth Edition(Java 编程思想,第四版)学习笔记(五)之Controlling Execution
摘要：In Java, the keywords include if-else,while,do-while,for,return,break, and a selection statement called switch. Java does not support the much-mali... 阅读全文
posted @ 2015-12-15 23:07 nicke 阅读(264) 评论(0) 推荐(0)
Thinking in Java,Fourth Edition(Java 编程思想,第四版)学习笔记(四)之Operators
摘要：At the lowest level, data in Java is manipulated using operatorsUsing Java Operators An operator takes one or more argument and produces a new valu... 阅读全文
posted @ 2015-12-14 23:04 nicke 阅读(579) 评论(0) 推荐(0)
Thinking in Java,Fourth Edition(Java 编程思想,第四版)学习笔记(三)之Everything Is an Object
摘要：---恢复内容开始--- Both C++ and Java are hybird languages. A hybird language allow multiple programming styles The reason C++ is hybird is to support b... 阅读全文
posted @ 2015-12-11 13:05 nicke 阅读(699) 评论(0) 推荐(0)
安装JDK后，未设置Path，也能执行java.exe的原因
摘要：安装JDK时，自动将java.exe复制到C:\Windows\System32下 阅读全文
posted @ 2015-12-10 17:20 nicke 阅读(376) 评论(0) 推荐(0)
qad progress数据库启动出错解决
摘要：1. 启动时报：SYSTEM ERROR: Wrong dbkey in block. Found 0, should be 6342528 in area 36. (439) ** Save file named core for analysis by Progress Softwar... 阅读全文
posted @ 2015-12-07 15:02 nicke 阅读(931) 评论(0) 推荐(0)
Thinking in Java,Fourth Edition(Java 编程思想,第四版)学习笔记(二)之Introduction to Objects
摘要：The genesis of the computer revolution was a machine. The genesis of out programming languages thus tends to look like that machine.计算机革命起源于机器，因此编程语言的... 阅读全文
posted @ 2015-12-02 23:41 nicke 阅读(316) 评论(0) 推荐(0)