object oriented design and patterns 2nd edition

. Net Video Learning 2nd-quarter C # Object-orientedObject-oriented Richter conversion random number protectedRichter conversion: A subclass object can be assigned to a parent class object, and if the parent class is loaded with a subclass

[Java Learning Series] Lesson 2nd-Java syntax and object-oriented, java-java Address of this Article Sharing outline: 1. Java program features 1.1 Basic syntax 1.2 string 1.3 Variables 1.4 Java Array 1.5 Java Enumeration 1.6 Java Modifier 2. Java object-oriented 2.1 Java cl

. Net Video Learning 2nd-quarter C # Object-orientedObject-oriented ArrayListArray: type single (unless it is a parent array, the subclass object is an element--- attention to the element or is considered to be the parent class object!) ), fixed lengthint New int [ten];Colle

. Net Video Learning 2nd-quarter C # Object-orientedObject-oriented BeginnerA class is a template that does not account for memory, which is the image generated by the template, which accounts for memory.Fields field: Data methods method: Function Property: Protect field, limit the assignment of a field (wrap this part in a class, the outside world ignores how) t

Lesson 2nd: Scala's object-oriented mastery and spark source readingContents of this issue:1 Scala's class, object in real combat2 abstract classes and interfaces in Scala3 comprehensive case and spark source code analysisOne: Define ClassClass hiscala{private var name = "Spark"Def sayname () {println (name)}def getNam

. Net Video Learning 2nd-quarter C # Object-orientedObject-Oriented Inheritance 1Find the namespace shortcut key for a class: ALT+SHIFT+F10There is a class X in Project A, to use X in Project B, first add Project A to the reference in Project B, and then add using a in the Code of Project B, assuming that the namespace of Class A x is a, or the a.x format when us

(original) Object-oriented system docking interface programming. 2nd article http://www.cnblogs.com/mazhiyuan/p/5224049.html(original) Object-oriented system docking interface programming. 3rd article http://www.cnblogs.com/mazhiyuan/p/5224050.html(original)

is:" +mess);} }2) "some attention points of the class"A) "import statement"--"location" If the source file contains an import statement, it should be placed between the package statement and the class Definition. If there is no package statement, the import statement should be first in the source File.--the "scope" Import Statement and the package statement are valid for all classes defined in the source File. In the same source file, you cannot give different package declarations to differen

. Net Video Learning 2nd-quarter C # Object-orientedObject-Oriented path class file classPath class, namespace Io, static classPath.getfilename (str), returns the file name in the file path, the return value is stringPath.getfilenamewithoutextension (str), returns the file name in the file path, without an extension, with a return value of stringPath.getextension

independent of the customers who use it.5. Advantages and DisadvantagesPros: Scalability is good. When we add a new module to the export, do not need to change the original code, only need to add a new import and export behavior class, and then the client side by setting the different behavior to determine the different import and export results.Cons: Increase in codeTherefore, judging the use of design patterns