随笔分类 -  PDC

Design Patterns
摘要：Where is the cost of software products from? -Effort and time Abstraction Abstraction is a process by which higher concepts are derived from the usage 阅读全文
posted @ 2017-12-19 01:00 CaiCongyu 阅读(165) 评论(0) 推荐(0)
Verification(验证)
摘要：Faults and failures Mistake vs. Fault vs. Failure Mistake:A human action that produces an incorrect result Fault: An incorrect step, process or data d 阅读全文
posted @ 2017-12-19 00:25 CaiCongyu 阅读(1874) 评论(0) 推荐(0)
Reflection
摘要：Reflection: To obtain meta level information about the program structure itself at runtime. To change the program interpretation or meaning at the run 阅读全文
posted @ 2017-12-18 22:03 CaiCongyu 阅读(173) 评论(0) 推荐(0)
Unit Test & JUnit(Java)
摘要：unit tests def High-level testing vs. low-level testing: High-level: system function testing, acceptance testing, … Low-level: unit testing and integr 阅读全文
posted @ 2017-12-18 20:59 CaiCongyu 阅读(2817) 评论(0) 推荐(0)
Collections
摘要：Collection classes Types of collection -Collection -Map ArrayList HashMap Iterator Java Arrays Declaring an array int[] myArray; int[] myArray = new i 阅读全文
posted @ 2017-12-18 18:54 CaiCongyu 阅读(195) 评论(0) 推荐(0)
多态性(Polymorphism)
摘要：Polymorphism Polymorphism: Means many (poly) shapes (morph) In OO programming, it means the ability of an object to take on many forms It is an import 阅读全文
posted @ 2017-12-18 16:56 CaiCongyu 阅读(381) 评论(0) 推荐(0)
Exceptions in Java（异常）
摘要：Errors An Error is any unexpected result obtained from a program during execution. Unhandled errors may manifest themselves as incorrect results or be 阅读全文
posted @ 2017-12-18 12:29 CaiCongyu 阅读(244) 评论(0) 推荐(0)
Graphical User Interface (GUI)
摘要：AWT and Swing Abstract Window Toolkit (AWT): Introduced in Java 1.0 Provides classes and other tools for building programs that have a graphical user 阅读全文
posted @ 2017-12-18 00:24 CaiCongyu 阅读(350) 评论(0) 推荐(0)
多线程（Multi-Threading）
摘要：Creating threads in Java Two things to do to create threads in java: (1) Create a task (object) //Creating a task public class TaskClass implements Ru 阅读全文
posted @ 2017-12-16 23:12 CaiCongyu 阅读(282) 评论(0) 推荐(0)
Java DataBase(JDBC)
摘要：A brief review of Database Database (DB): an organised collection of data Relational DBs (first published by Edgar F. Codd (IBM) in 1970) store data i 阅读全文
posted @ 2017-12-16 22:03 CaiCongyu 阅读(1513) 评论(0) 推荐(1)
Java file I/O(java 文件输入输出)
摘要：File Overview I/O = Input/Output, here it is input to and output from programs Inputs can be from: Keyboard Files Etc. Output can be: Screen Files Etc 阅读全文
posted @ 2017-12-16 16:48 CaiCongyu 阅读(6176) 评论(0) 推荐(0)
面向对象程序设计（Object Oriented Design）
摘要：OOD的流程： 需求分析——>系统/程序设计——>实现这个设计——>测试 Class Design 1. Identify classes for the system. 2. Describe attributes and methods in each class. 3. Establish r 阅读全文
posted @ 2017-12-15 19:31 CaiCongyu 阅读(705) 评论(0) 推荐(0)
Modern Programming Languages
摘要：Programming languages 1)Structured programming SQL 2)Procedural programming c 3)OO programming c++ java Procedural Programming vs OO programing 我自己的感觉 阅读全文
posted @ 2017-12-14 21:40 CaiCongyu 阅读(334) 评论(0) 推荐(0)