What is Java?

Java is an object oriented language. It was developed in 1991 in U.S.A by Sun Microsystem. It is much reliable and portable language than C++. Previously Java Language was known as Oak. Java can do two type of work:-

·        Stand Alone application programming

·        Applet programming

FEATURE:-

·        It is object oriented

·        Platform independent

·        Portable

·        Distributed

·        Security

·        Multithread Language

·        Write once read many

·        Extensible and dynamic

What is Java Development Kit {JDK}?

JDK provide a number of tools which essential to develop and run Java program these tools are:-

·        Javac:- java compiler. It translate Java Source code to byte code file to make them understandable by the interpreter.

·        Java:- java interpreter. It runs applet and application by reading and interpreting byte code file.

·        Jdb:- java debugger. This help in finding error and removing them from the program which is being compiled

·        Javah:- it produces header file.

·        Javap:- Java disk assembler. This help in converting byte code file into a program description.