hat is java

I can read your Question as What is Java??? Features of Java: Object Oriented: In Java, everything is an Object. We can define Objects based on real time entitites Platform independent: When Java is compiled, it is not compiled into platform specific machine, rather into platform independent byte code. This byte code is distributed over the web and interpreted by virtual Machine (JVM) on whichever palatform it is being run. Simple: Java is designed to be easy to learn. If you understand the basic concept of OOP Java would be easy to master. Secure: With Java's secure feature it enables to develop virus-free, tamper-free systems. Authentication techniques are based on public-key encryption. Architectural-neutral: Java compiler generates an architecture-neutral object file format which makes the compiled code to be executable on many processors, with the presence of Java runtime system. Portable: Being architectural-neutral and having no implementation dependent aspects of the specification makes Java portable. Compiler in Java is written in ANSI C with a clean portability boundary which is a POSIX subset. Robust: Java makes an effort to eliminate error prone situations by emphasizing mainly on compile time error checking and runtime checking. Multithreaded: With Java's multithreaded feature it is possible to write programs that can do many tasks simultaneously. This design feature allows developers to construct smoothly running interactive applications. Interpreted: Java byte code is translated on the fly to native machine instructions and is not stored anywhere. The development process is more rapid and analytical since the linking is an incremental and light weight process. High Performance: With the use of Just-In-Time compilers, Java enables high performance. Distributed: Java is designed for the distributed environment of the internet. Dynamic: Java is considered to be more dynamic than C or C++ since it is designed to adapt to an evolving environment. Java programs can carry extensive amount of run-time information that can be used to verify and resolve accesses to objects on run-time. Integrating Develop Environament: To create Java Programes we need editor to type a programe. Bundling JDK and editor together is called integrated Development Environment (IDE). Eclipse is one of the example for popurlar IDE. G John Thimothy read less

Introduction to JAVA Programming concepts of Basic Java Language Features Data Types, Variables Control Statements OOPS Concepts Writing your own Java Classes Object and Classes Inheritance and Polymorphism Java Arrays and Strings Wrapper classes Packages and Interfaces Exception Handling Multithreading Nested Classes Reflection API Java Annotation Enum types Applets Programming Graphics Abstract Window Toolkit (AWT), Swing Event handling Streams and File IO Serialization read less