Java tutorial for beginners | Java Features
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In this article you will learn about basic details of Java. It is about Java Tutorials for Beginners | Java Features For more details on this topic please visit: http://www.speed4career.com/blog/
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Java tutorial for beginners | Java Features
- 1. [JAVA Tutorial – Part - 1] From [Speed4Career] By DEBASMITA
- 2. About Us: In modern days economic system the most valuable asset is knowledge. Day by day increasing competition and invention of cutting edge technologies are the results of revolution in the global Educational system and use of process oriented learning environment. This process oriented learning environment is essential for the modern corporate world. Speed4career.com understands the nature of this revolution. We are committed to this process oriented learning environment and set our goals to help in creating a better modern corporate world, more over a better world for our future generation.
- 3. In this quest for creating a process oriented learning environment www.speed4career.com introducing a new module – Tutorial. In this “Tutorial” module we are discussion about the BEGINNERS lesson for the technology related subjects. All the Tutorials are created by the INDUSTRY EXPERTS working on the same field for years. For more details please visit: www.speed4career.com/blog
- 4. Introduction to Java Java is a high-level, platform-independent, object-oriented programming language developed and released by Sun Microsystems in the year 1995. The main objective behind creating java was to develop an all-machine-compatible programming language so that the same program did not have to be written separately to be run on different machine.
- 5. Introduction to Java Moreover the advent of Wold Wide Web and Internet added fuel to the rapid growth of Java as the programmes were now shared among a wide diversity of user machines (different types OS, CPU, etc) and a platform independent language was mandatory. Thus platform-independence was the key characteristic of Java that makes it so popular and increases its demand.
- 6. JAVA: FEATURES Before we enter into Java programming we must first get a brief idea about its versatile features. Only then can we easily grab the techniques of writing a program: Object-oriented programming: Programs consists of two parts i.e. code and data. The programming language that circles around the data is called object-oriented programming and the one that focuses on the code is called process-oriented programming. Java follows the basic principles of OOP like Abstraction, Encapsulation, Inheritance and Polymorphism. Each of these will be illustrated as we learn Java in further details.
- 7. Platform independent Java follows the principle – ‘WRITE ONCE, RUN ANYWHERE’ making it portable and architecturally-neutral. This is achieved by the generation of Bytecode. Bytecode is the set of non-executable instructions that is generated by the Java compiler. Java Virtual Machine (JVM) is the interpreter of this bytecode that changes it into executable code. For this reason when we compile a ‘.java’ file it create ‘.class’ file and not ‘.exe’ file. This ‘.class’ file is the bytecode. P.T.O JAVA: FEATURES
- 8. The main advantage of this kind of behaviour is that the bytecode generated can run on a wide variety of machines if only the JVM is installed. JVM can be different for different platform but if it is installed it can run any Java code. Dynamic: Java links the codes at the run-time depending on the object invoking it. Overridden methods and interfaces are dynamically dispatched at the run-time making it more safe and robust. Java implements run-time polymorphism by Dynamic Method Dispatch. This will be discussed elaborately when we study method overriding in detail. JAVA: FEATURES
- 9. Multithreaded: Java provides multiprocess execution in a synchronised manner with the help of built- in support for multithreaded programming. When a program has two or more path of execution it is called a multithreaded programming. This increases the efficient use of CPU by minimizing its idle time. Security: Java ensures security to a great extent because the executions of java programs are under the control of JVM and it can be prevent it from any malicious activities. When a Java-compatible browser is available, java applets can be safely downloaded without any viral attack. JAVA: FEATURES
- 10. Java Applets and Applications: There can be two types of java programmes- Applications and Applets. Applications are programmes that run on a stand-alone computer and similar to programmes written in any other language. On the other hand Java Applets are small java programmes created to be transmitted over internet and downloaded by the uses on their machine. JAVA: FEATURES
- 11. Thus learning Java is a big craze among application designers and programmers and it not too tough if studied systematically with proper illustrations. We will start with programming in our next lesson. For more details please visit: http://www.speed4career.com/blog/category /java/ JAVA: FEATURES