Java

Java is a high-level programming language developed by Sun Microsystems. Java was originally called OAK, and was designed for handheld devices and set-top boxes. Oak was unsuccessful so in 1995 Sun changed the name to Java and modified the language to take advantage of the burgeoning World Wide Web. 

Java is an object-oriented language similar to C++, but simplified to eliminate language features that cause common programming errors. Java source code files (files with a .java extension) are compiled into a format called bytecode (files with a .class extension), which can then be executed by a Java interpreter. Compiled Java code can run on most computers because Java interpreters and runtime environments, known as Java Virtual Machines (VMs), exist for most operating systems, including UNIX, the Macintosh OS, and Windows.

PROCESSING A JAVA PROGRAM

 # Using editor, write Java code using Java syntax. This is what we called the source code.

 # Compile the source code for correctness of syntax and translate into bytecode.

 # Run the program. A program in JDK(Java Development Kit) library which called Linker links the bytecode with necessary code residing in the library.

 # Loader : Transfers the compiled code(bytecode) into main memory.

 # Interpreter : Reads and translates each bytecode instruction into machine language and then executes the statements in a program written in a high-level language.