Java

Java (programming language)

Java programming language is no1 language that use in android app and java app 

Java is a general-purpose computer programming language that is concurrent, class-based, object-oriented,[14] and specifically designed to have as few implementation dependencies as possible. It is intended to let application developers "write once, run anywhere" (WORA),[15] meaning that compiled Java code can run on all platforms that support Java without the need for recompilation.[16] Java applications are typically compiled to byte code that can run on any Java virtual machine (JVM) regardless of computer architecture. As of 2016, Java is one of the most popular programming languages in use,[17][18][19][20] particularly for client-server web applications, with a reported 9 million developers.[21] Java was originally developed by James Gosling at Sun Micro systems (which has since been acquired by Oracle Corporation) and released in 1995 as a core component of Sun Micro systems' Java platform. The language derives much of its syntax from C and C++, but it has fewer low-level facilities than either of them.

The original and reference implementation Java compilers, virtual machines, and class libraries were originally released by Sun under proprietary licences. As of May 2007, in compliance with the specifications of the Java Community Process, Sun re licensed most of its Java technologies under the GNU General Public License. Others have also developed alternative implementations of these Sun technologies, such as the GNU Compiler for Java (byte code compiler), GNU Class path (standard libraries), and Iced Tea-Web (browser plugin for applets).

The latest version is Java 8, which is the only version currently supported for free by Oracle, although earlier versions are supported both by Oracle and other companies on a commercial basis.

In easy Words
Java is at the heart of our digital lifestyle. It's the platform for launching careers, exploring human-to-digital interfaces, architectonic the world's best applications, and unlocking innovation everywhere—from garages to global organizations.

Is Java free to download?
Yes, Java is free to download. Get the latest version at java.com.

If you are building an embedded or consumer device and would like to include Java, please contact Oracle for more information on including Java in your device.

Why should I upgrade to the latest Java version?
The latest Java version contains important enhancements to improve performance, stability and security of the Java applications that run on your machine. Installing this free update will ensure that your Java applications continue to run safely and efficiently.

MORE TECHNICAL INFORMATION

What will I get when I download Java software?
The Java Run time Environment (JRE) is what you get when you download Java software. The JRE consists of the Java Virtual Machine (JVM), Java platform core classes, and supporting Java platform libraries. The JRE is the run time portion of Java software, which is all you need to run it in your Web browser.

What is Java Plug-in software?
The Java Plug-in software is a component of the Java Run time Environment (JRE). The JRE allows applets written in the Java programming language to run inside various browsers. The Java Plug-in software is not a standalone program and cannot be installed separately.

I have heard the terms Java Virtual Machine and JVM. Is this Java software?
The Java Virtual Machine is only one aspect of Java software that is involved in web interaction. The Java Virtual Machine is built right into your Java software download, and helps run Java applications.
Java programming language logo

Paradigm Multi-paradigm: Object-oriented (class-based), structured, imperative, generic, reflective, concurrent

Designed by James Gosling

Developer Sun Micro systems (now owned by Oracle Corporation)

First appeared May 23, 1995; 21 years ago[1]

Typing discipline Static, strong, safe, nominative, manifest

License GNU General Public License, Java Community Process

Filename extensions .java , .class, .jar

Website www.oracle.com/java/
or click on logo to download

Major implementations

OpenJDK, GNU Compiler for Java (GCJ), many others