Know the Java Programming Language

History of Java

Java pioneered by James Gosling, Patrick Naughton, Chris Warth, Ed Frank, and Mike Sheridan of Sun Microsystems, Inc. in 1991. They need about 18 months to make the first version. This language was initially called "Oak" but was changed to "Java" in 1995 as the name of Oak have made copyright and used as other programming languages. Between making of Oak in fall 1992 to be announced to the public in the spring of 1995, many people involved in the design and evolution of language. Bill Joy, Arthur van Hoff, Jonathan Payne, Frank Yellin, and Tim Lindholm is a key contributor to finalize the original prototype.

Modern Java

Java has been used in many ways and have proven its existence in the 21st century. Today, Java is used various types of applications such as embedded applications, financial applications, desktops, airplane simulation, image processing, games, distributed enterprise applications called J2EE and much more.

Java Virtual Machine (JVM)

Java Virtual Machine is a simple application written in C language for mengeksi programs written in the Java language. At the time of compilation (a change from a high-level language into a lower language), the program was changed to CODE BYTE. Then at the time of execution, the JVM byte code reading tersebu and turn it into machine language understood by the operating system where the program is run.

Because the JVM is very dependent on the platform (machine language is a low level language only understood by a particular machine, such as Intel, but it can not be understood by other machines, such as the Macintosh), byte code can be made to be free from the confines of a particular platform. Byte code generated in the process of compiling the Java language will always be the same for each operating system or the type of engine, but it will change the JVM bytecode into machine language goals.

Just In Time Compiler (JIT)

Although Java was designed to be interpreted, technically nothing prevents Java is compiled into machine language like other programming languages. Sun provides a compiler Just In Time Compiler (JIT) compile to byte code into machine language at the same time with the execution. However, the JIT approach produces more capabilities than the usual interpretation.