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Object Oriented Programming Using JAVA by Sarmi Sasirekha

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Note for Object Oriented Programming Using JAVA - OOPJ By SARMI SASIREKHA

Notes for Java Programming - JAVA

by Sarmi Sasirekha

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Page-1 Java notes Genesis of JAVA 1. JAVA Syntax form C –language OOP’s concepts features are influences from C++ language. 2. C, Pascal , Basic, Fortran are the based on either compiler or interpreter. But Java programs are based on compiler and interpreter both. Source code Java Compiler Byte Code Java Interpreter Machine Code 3. Java program is platform independent to achieve the independency the Byte codes area used. 4. Java Compiler is generally known as JVM(Java Virtual Machine). Importance of java in Internet One of the java advantages for use over the Internet is that platform independent, meaning that programs created with the java can run on any machine (computers).Java achieves its independence by creating programs designed to run on the JVM rather than any specific computer system. These java programs once compiled and stored in a compact machine independent format known as Byte codes. Byte code files area easily transferred across the Internet. The preloaded interpreter run the byte code in the local machine then plays them. Java Features  Simple - Java's developers deliberately left out many of the unnecessary features of other high-level programming languages. For example, Java does not support pointer math, implicit type casting, structures or unions, operator overloading, templates, header files, or multiple inheritance.                                                                                                                                      Compiled by Umesh Sharma