TAILIEUCHUNG - Using Classes and Objects

Once an object has been instantiated, we can use the dot operator to invoke its methods (); Note: A method may return a value or not Example: String s = new String(“Hello"); int count = (); ("Length of s is " + count); | Chapter 2 Using Classes and Objects Outline Creating object Class libraries and Packages The String class The Scanner class The Random class The Math class Formatting output Wrapper classes - Autoboxing Writing method Slide Creating object Way 1: String title = new String("Java Software Solutions"); Way 2: String title; // this is called a reference variable title = new String("Java Software Solutions"); ClassName object_name = new ClassName(.); ClassName object_name; object_name = new ClassName(.); This calls the String constructor, which is a special method that sets up the object Creating an object is called instantiation An object is an instance of a particular class Slide Invoking method Once an object has been instantiated, we can use the dot operator to invoke its methods (); Note: A method may return a value or not Example: String s = new String(“Hello"); int count = (); ("Length of s is " + count); Slide References A .

• Kỹ thuật lập trình
• Object class and
• Building object class
• algorithm programming
• object oriented programming
• component Access
• Lecture Object Oriented programming
• Bài giảng Lập trình hướng đối tượng
• Class collection
• Class set
• Class hierarchy
• Class – Object – Method
• Bài giảng Class – Object – Method
• Lớp – Đối tượng – Phương thức
• Thuộc tính truy cập
• Hàm dựng Constructor
• Nạp chồng override
• Date class
• Creating specialDate class
• Modify access specifier
• Class compatibility
• Object Oriented modeling
• Eliminate irrelevant classes
• Class & Object Diagrams Software Design Methodology
• Class & Object Diagrams
• Classes versus objects
• Multiple inheritance
• Multiplicity symbols
• Association role names
• Overriding member functions of base class
• Overriding member functions
• Base class
• Class Building
• Data abstraction
• Message passing
• Class member declaration
• Using Classes
• Object Oriented Programing
• Lecture Object Oriented Programing
• Programming languages
• Class string
• Class character
• Concatenating strings
• Declaring class variables
• Variables of classes
• Member functions
• Function inside class body
• Function outside class body
• Abstract class
• Concrete concept
• Pure virtual functions
• Java programming language
• Bài giảng ngôn ngữ lập trình Java
• Designing and writing a class
• Writing constructors
• instance and class members
• The object class
• More on class
• Enum types
• The class path
• Documentation comments for class
• Declaring member variables
• Objects presents Class
• The this keyword
• Object Oriented Data Modeling
• Data Modeling
• UML Language
• Object Modeling Example
• Tranform Class Diagram to Relational Database Schema
• Data hierarchy
• Class file
• Object serialization
• Object Oriented Programming with Java
• Instance data values
• Class data value
• Software development
• Lập trình hướng đối tượng
• Static class data
• Derived class constructors
• Class association
• Object association
• Hierarchy of inheritance
• Direct base class
• Indirect base class
• The Object Flow Graph
• State Diagrams
• The eLib Program
• Interaction Diagrams
• Object Diagram
• Class Diagram