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Introduction to java
Ahmed Abbadi is an instructor for an introduction to Java course. He has a computer engineering background from Cairo University and is a member of the IEEE professional organization. The course covers what Java is, its object-oriented programming concepts like classes and objects, why Java was developed, its architecture including the Java Virtual Machine, and examples like for each loops and inheritance.
Introduction to java
- 1. About InstructorIntroduction toJAVA Ahmed Abbadi ESL
- 2. About Instructor Ahmed Abbadi: •Cairo university, Faculty of Engineering, Department of Electronics & communication (second year) • Member at IEEE PR team • Mobile: 01110801023 • Email: eng.abbadi.25@gmail.com
- 3. JAVA •What is JAVA •OOP •WhyJAVA •Architecture •Examples
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- 5. 5 9/8/2015 • Historical view •Based on C/C++ • General purpose OOP • Where is JAVA What is JAVA • JAVA was developed in the 1990s by Sun Microsystems (James Gosling) which has been acquired by Oracle. • It`s name was Oak, Green then JAVA. • Sun Microsystems released the first public implementation as Java 1.0 in 1995 Historical view
- 6. 6 9/8/2015 • Historical view •Based on C/C++ • General purpose OOP • Where is JAVA What is JAVA • Gosling designed Java with a C/C++- style syntax that system and application programmers would find familiar. Based on C/C++
- 7. 7 9/8/2015 • Historical view •Based on C/C++ • General purpose OOP • Where is JAVA What is JAVA • Designed to be used for writing software in a wide variety of application domains. • programming language based on the concept of "objects“. General purpose OOP
- 8. 8 9/8/2015 • Historical view •Based on C/C++ • General purpose OOP • Where is JAVA What is JAVA • Computer applications. • Web pages. • Games. • Smart phones (Android). • Robots. Where is JAVA
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- 10. 10 9/8/2015 • Classes & objects •Inheritance • Encapsulation • Polymorphism OOP • (OOP) is a programming method that based from object. Small think from OOP is an object collection that interact with each other. Object Orientation
- 11. 11 9/8/2015 • Classes & objects •Inheritance • Encapsulation • Polymorphism OOP • Objects: structures that contain both data and procedures. • Objects have states(Attributes) and behaviors(Actions). Example: A dog has states - color, name, breed as well as behaviors -wagging, barking, eating. An object is an instance of a class. Classes & Objects
- 12. 12 9/8/2015 • Classes & objects •Inheritance • Encapsulation • Polymorphism OOP • Class: is the blueprint from which individual objects are created. • “Class” like form and each copy of it is a “Object”. Classes & Objects
- 13. 13 9/8/2015 • Classes & objects •Inheritance • Encapsulation • Polymorphism OOP • Different kinds of objects often have a certain amount in common with each other. • Object-oriented programming allows classes to inherit commonly used state and behavior from other classes. Inheritance
- 14. 14 9/8/2015 • Classes & objects •Inheritance • Encapsulation • Polymorphism OOP • Encapsulation is the mechanism that binds together code and the data it manipulates, and keeps both safe from outside interference and misuse. Encapsulation
- 15. 15 9/8/2015 • Classes & objects •Inheritance • Encapsulation • Polymorphism OOP Encapsulation
- 16. 16 9/8/2015 • Classes & objects •Inheritance • Encapsulation • Polymorphism OOP • Polymorphism is the ability to take more than one form. • It’s the ability to request for an operation with the same meaning to different objects. Polymorphism
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- 18. 18 9/8/2015 • Classes & objects •Inheritance • Encapsulation • Polymorphism OOP Polymorphism • “One Function & Multi Objects”
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- 20. 20 9/8/2015 • Object Oriented •Simple • Secure • Portable • Robust • Architecture Neutral Why JAVA • Object Oriented • Simple • Secure • Portable (can run on any operating system) • Robust • Architecture Neutral (can run on any processor) Why Java?
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- 22. 22 9/8/2015 • Platform • Independent •JVM • JDK Architecture • A Java Platform is the set of APIs, class libraries, and other programs used in developing Java programs for specific applications. JAVA Platform
- 23. 23 9/8/2015 • Platform • Independent •JVM • JDK Architecture • There are 3 Java Platform Editions: 1. Java 2 Platform, Standard Edition (J2SE) • Core Java Platform targeting applications running on workstations . 2. Java 2 Platform, Enterprise Edition (J2EE) • Component-based approach to developing distributed, multi-tier enterprise applications. 3. Java 2 Platform, Micro Edition (J2ME) • Targeted at small, stand-alone or connectable consumer and embedded devices. JAVA Platform
- 24. 24 9/8/2015 • Platform • Independent •JVM • JDK Architecture • Java technology is used to develop applications for a wide range of environments. Platform Independent
- 25. 25 9/8/2015 • Platform • Independent •JVM • JDK Architecture “Write once, Run Anywhere” Platform Independent
- 26. 26 9/8/2015 • Platform • Independent •JVM • JDK Architecture Java Virtual Machine • JVM is a component which provides an environment for running Java programs. JVM interprets the bytecode into machine code which will be executed the machine in which the Java program runs.
- 27. 27 9/8/2015 • Platform • Independent •JVM • JDK Architecture Java Development Kit • JDK consists of the following: Java development tools, including the compiler, debugger, classes and JVM.
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- 29. 29 9/8/2015 Examples For Eachloop • For Each loop • Inheritance
- 30. 30 9/8/2015 • For Eachloop • Inheritance Examples Examples
- 31. 31 9/8/2015 • For Eachloop • Inheritance Examples Inheritance
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