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Java is a computer programming language created by Sun Microsystems.
Java is used mainly on the Internet and uses a virtual machine which has been
implemented in most browsers to translate Java into a specific application on
different computer system. With most programming languages, you either compile
or interpret a program so that you can run it on your computer. The Java programming
language is unusual in that a program is both compiled and interpreted. The most
common Java programs are applications and applets. Applications are standalone
programs, such as the HotJava browser. Applets are similar to applications, but
they don't run standalone. Instead, applets adhere to a set of conventions that
lets them run within a Java-compatible browser. The Java programming language
is a high-level language that can be described as, - Architecture neutral
- Object oriented
- Portable
- Distributed
- High
performance
- Multithreaded
- Dynamic
- Secure
As long as a computer has a Java VM (Virtual Machine), a Java program
can run on these machines, - Windows 2000
- Linux
- Solaris
- MacOS
The Java platform differs from most other platforms in that it's a software-only
platform that runs on top of other hardware-based platforms. The Java platform
has two components, - The Java Virtual Machine (Java VM)
-compiles and translates Java scripts into Java bytecodes which can be descibed
as machine code instructions.
- The Java Application Programming
Interface (Java API)
- is a large collection of ready-made software components
that provide many useful capabilities, such as graphical user interface (GUI)
widgets. The Java API is grouped into libraries of related classes and interfaces;
these libraries are known as packages.
Java can offer these features,
- Objects - object-oriented technology
- strings
- threads, numbers
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input and output
- data structures
- system properties
- date
and time
- Applets
- 2D and 3D graphics
- telephony
- speech
- animation
- electronic
signatures
- private key management
- access control
Java
FAQ Java
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