object oriented programming with java essentials and applications pdf

. Object-oriented programming ( Java )Section 1 Weekly Learning Guidelines and requirements ( 2017.8.24-2017.8.27 )Learning Goals Understand the course mode and teacher teaching requirements, master the necessary software tools for curriculum learning; Simple knowledge of

Beijing Institute of Electronic Technology (BESTI)Real Inspection report Lesson: Java Programming Class: 1352Name: (by contribution size) ShangStudy No.: (Rank by contribution size) 20135202Score: Instructor: Lou Jia Peng Experimental Date: 2015.5.8Experiment level: Preview degree: Experiment time: 15:30-18:00Instrument Group: Compulsory/Elective: compulsory Test number: 2Experiment Name:Java

In object-oriented programming, there can be no further concept of the first step or the second step. "Objects and Classes""Relationships between classes and objects"A> Association Relationshipb> Inheritance Relationship (general and special)c> Aggregation Relationship (whole and part)d> Realization Relationship"Java a

, Feng small Java object-oriented programming thoughtObject-oriented three features: encapsulation, inheritance, polymorphismPackaging:Syntax: Property privatization (private), providing a way to provide relative get/set to access (public),The judgment of the business logic

internal access, the lowest access level4). Default: Public only for classes in the same packageTwo principles of Encapsulation (approximate):1. Hide as many things as possible and provide a simple interface to the outside.The higher the system's package, the higher its relative independence, and the more convenient it is to use.2. Hide all the attributesIf a property is allowed to be accessed by the outside world, provide a public way to access the propertyWhy not define the volume property as

9.1 polymorphicIn biology, it means that a creature or species can have many different forms or stages;In OOP, polymorphism refers to the ability of an object to have multiple forms.Polymorphism can be said to be the essence of object-oriented programming. One of the reasons why a polymorphic concept is introduced in

#写在前面Following an OOP object-oriented programming of the Russian Block project implementation process, OOP object-oriented programming of the Java game, in fact, writing is very simple,

Just read "JavaScript Object-oriented essentials" this book, in the existing knowledge system has some fresh understanding, record. There are two types of primitive and reference-type javascript: The original type and the reference type. The original types include string, number, Boolean, Null, Undefined, and reference type to save the

Summary 5% Four: summary1. Experimental summary: The main content of this experiment is the code object-oriented three elements of the application, as well as the code design ideas and testing methods, through this week and last week's PSP time ratio can be seen, the proportion of design and testing increased, and the code to achieve the proportion of time decreased, which is closer to dail

The second week of object-oriented programming (Java) Learning Summary The direct study sister learns the younger brothers good! The amount ... Don't ask me why I put my sister in front, I do not know! I'm just one of your amiable seniors. Do not ask why the second week study summary instead of the first week, becaus

20155217 Experiment Report of Java object-oriented programming experiment 1. Develop simple Android apps and deploy tests based on Android Studio 2. Understanding the use of Android, components, layout Manager 3. Mastering the event handling mechanism in Android. Second, the installation of software problems1. Install

7.1 Origins of the InheritanceInheritance (inheritance), that is, in object-oriented programming, you can create a new class by extending (extends) an existing class and inheriting the behavior of the class's properties.An existing class is called a parent class (also known as a base class, a superclass), and a new class is called a subclass (also known as a deri

(list of references) Anonymous inner class anonymous inner class does not have a class name, cannot have abstract and static properties, and cannot derive subclasses. The definition format for anonymous inner classes is:new Parent type name (list) {class Body}A sample is easier to understand:Abstract class ClassA {int data;public ClassA (int i) {data = i;} public abstract void Method (); public class ClassB {public static void main (string[] args) {ClassA a = new ClassA (3) {public void me

"The first edition of Java Object-oriented programming" since its publication in 2016, thanks to readers of the Love, has been reprinted more than 20 times, become the Java field of the classic Java technology treasure. At the req

essentially a special abstract class2. The properties of the interface definition must be public static final, and the definition of the interface must be public abstract, these modifiers can be omitted partially or completelyInterface it{publicstaticfinalint i=20; Public Abstract void f ();}3. Interfaces can inherit multiple interfaces, that is, allow multiple inheritance4. To implement only some of the methods in the interface, the abstract class5. You can not new

, dependency inversion principle) -we see that the code conforms to the OCP principle by adding a layer of abstraction. Code has a good extensibility, maintainability, the price is more code, inefficient.Design patterns beginners are prone to overuse them, leading to over-design, that is to say, complying with dry and OCP is certainly good, but will appear yagni (you aren ' t gonna need it and you won't need it) issues.The dry principle and the Yagni principle are not fully compatible. The

Java Object-Oriented Programming IThree main features: Encapsulation: Encapsulation Inheritance: Inheritance Polymorphism: PolymorphismCreation object: Person per = NULL; // declare an object Per = new person (); // instantiate th

encapsulated in a class, and the outside world uses the common interface--to invoke the method of the class to get state information, without paying attention to how the internal details are implemented.3.3 can be reusedWith a class template, you can create multiple object cases and reuse the class's definition codeMemory management mechanism for 4.java objectsUse new to create objects, allocate

the collectionJdbc1. Load driver build connection write SQL Execute SQL get result close resource2.class.forname ("SQLServerDriver")Connection conn = drivermanager.getconnectionString sql = "";Statement stmt = Conn.createstatement ()Stmt.executeupdate (SQL)///delete/change executeQuery (SQL)//query3.PreparedStatement Statement Difference1. The former generally requires the presence of placeholders (? ）2. The former requires the data to be populated with the pstmt.setxxx () the table below start

Experiment Report of Java object-oriented programming Initial mastery of UML modeling Familiarity with S.O.L.I.D principles Initial mastery of UML modeling Understanding Design PatternsLab Submission point 1: Unit Test(1) Three kinds of code伪代码It is an algorithm description language, with clea