"Translation" about the Java technology

About the Java technology

Java technology is both a programming language and a platform.

The Java programming Language

The Java programming language is a high-level (advanced) language that can being characterized by ... As a feature) all of the following buzzwords (popular):

• Simple
• Object oriented
• Distributed (distributed)
• Multithreaded
• Dynamic

• Architecture Neutral (... ）
• Portable (convenient)
• High performance (higher performance)
• Robust (robust)
• Secure

Each of the preceding buzzwords (front of the popular language) is explained in the Java Language Environment , a white paper written by James Gosling and Henry McGilton.

In the Java programming language, all source code was first written in plain text (plain text) files ending with the .java Extensio N. Those source files is then compiled to .class files by the javac compiler. A .class file does not contain code, native to your processor, it instead contains bytecodes -the Machine Language of the Java virtual Machine1 (Java VM). The java Launcher tool (starter utility) then runs your application with an instance of (one instance) of the Java Virtual machine.

An overview of (general) the software development process.

Because the Java VM is available in many different operating systems, the same .class files are capable of (capable of doing) running on Microsoft Windows, the Solaris? Operating System (Solaris os), Linux, or Mac os. Some virtual machines, such as the Java SE HotSpot at a Glance, perform (execution) additional steps at runtime to give your appli Cation a performance boost (performance boost). This includes various tasks such as finding performance bottlenecks (performance bottleneck) and recompiling (to native code) frequently used (common) sections of code (part code).

Through the Java VM, the same application is capable of (has ... Ability) running on multiple platforms.

The Java Platform

A platform is the hardware or software environment in which a program runs. We ' ve already mentioned some of the most popular platforms like Microsoft Windows, Linux, Solaris OS, and Mac OS. Most platforms can described as a combination of (... The operating system and underlying hardware (underlying hardware). The Java platform differs from the very platforms in that it's a software-only (pure software) platform that runs on top of other H ardware-based (Hardware-based) platforms.

The Java platform has the following components:

• The Java Virtual Machine
• The Java application Programming Interface (API)

You ' ve already been introduced to the Java Virtual machine; It ' s the base for (... The Java platform and is ported onto (ported to) various hardware-based platforms.

The API is a large collection of ready-made (off-the-shelf) software components, provide many useful capabilities (feature). It is grouped into (partitioned) libraries of related classes (related class library) and interfaces; These libraries is known as packages. The next section, how Can Java technology do? Highlights some of the functionality provided by the API.

The API and Java Virtual machine insulate (isolated) from the underlying hardware.

As a platform-independent (platform independent) environment, the Java platform can be a bit slower (a little slower) than native code. However, advances (progressive) in compiler and virtual machine technologies is bringing performance close to (near) that of native C Ode without threatening portability (dangerous transplant).

The terms "Java Virtual machine" and "JVM" mean a Virtual machine for the Java platform.

"Translation" about the Java technology