Object Oriented Programming

Gui

目录

  • 1 Introduction
    • 1.1 Introduction
    • 1.2 Machine Lang, Assembly lang and High-level lang
    • 1.3 History of Java
    • 1.4 Characteristics of Java
    • 1.5 Typical Java Development Environment
    • 1.6 Introduction to Java Application
  • 2 Classes and Objects
    • 2.1 Primitive Types vs. Reference Types
    • 2.2 Classes and Objects
      • 2.2.1 Declaring a Class
      • 2.2.2 Local and Instance Variables
      • 2.2.3 Methods: A Deeper Look
      • 2.2.4 Constructors
  • 3 Control Statements
    • 3.1 Control Structures
    • 3.2 if Selection
    • 3.3 while Repetition
    • 3.4 for Repetition
    • 3.5 do…while repetition
    • 3.6 switch multiple-selection
  • 4 Arrays and Collections
    • 4.1 Arrays
    • 4.2 ArrayList
    • 4.3 Set
    • 4.4 Generic Programming
  • 5 Object-Oriented Programming: Inheritance
    • 5.1 Inheritance
    • 5.2 Superclasses and Subclasses
    • 5.3 Constructors in Subclasses
  • 6 Object-Oriented Programming: Polymorphism
    • 6.1 Polymorphism
    • 6.2 Polymorphic Behavior
    • 6.3 Enable and Disable Polymorphism
  • 7 Exception Handling
    • 7.1 Exceptions
    • 7.2 Error-Handling
  • 8 Java I/O
    • 8.1 Java I/O Streams
    • 8.2 Decorator Design Pattern
  • 9 GUI Components
    • 9.1 AWT and SWING
    • 9.2 Event Model
  • 10 Multithreading
    • 10.1 Life Cycle of a Thread
    • 10.2 Thread Synchronization
    • 10.3 Producer/Consumer
History of Java

History of Java

  • Java evolved from C++, which evolved from C, which evolved from BCPL and B.C

  §Originally implemented in 1972

  §Evolved from B by Dennis Ritchie at Bell Laboratories

  §Became widely known as the UNIX operating system’s development language

  §Today, most of the code for general-purpose operating systems is written in C or C++. 

  • C++

  §An extension of C

  §Developed by Bjarne Stroustrupin the early 1980s at Bell Laboratories

  §Provides capabilities for object-oriented programming. 

  §Hybrid language—it’s possible to programin either a C-like style, an object-oriented style or both.

  • Microprocessors are having a profound impact in intelligent consumer-electronic devices. 

  • 1991 

  §Recognizing this, Sun Microsystems funded an internal corporate research project, which resulted in a C++-based language named Java

  §Created by James Gosling.

  • 1993

  §The web exploded in popularity

  §Sun saw the potential of using Javato add dynamic content to web pages. 

  • Java garnered the attention of the business community because of the phenomenal interest in the web. 

http://en.wikipedia.org/wiki/Java_version_history