About Java : Java is a popular general-purpose programming language and computing platform. It is fast, reliable, and secure. According to Oracle, the company that owns Java, Java runs on 3 billion devices worldwide.
Considering the number of Java developers, devices running Java, and companies adapting it, it’s safe to say that Java will be around for many years to come.This guide will provide everything you need to know about Java programming language before you learn it. More specifically, you will learn about features of Java programming, its applications, reasons to learn it, and how you can learn it the right way.
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More About JAVA :
Java is an object-oriented, cross platform, multi-purpose programming language produced by Sun Microsystems. First released in 1995, it was developed to be a machine independent web technology. It was based on C and C++ syntax to make it easy for programmers from those communities to learn. Since then, it has earned a prominent place in the world of computer programming.
Java has many characteristics that have contributed to its popularity:
- Platform independence – Many languages are compatible with only one platform. Java was specifically designed so that it would run on any computer, regardless if it was running Windows, Linux, Mac, Unix or any of the other operating systems.
- Simple and easy to use – Java’s creators tried to design it so code could be written efficiently and easily.
- Multi-functional – Java can produce many applications from command-line programs to applets to Swing windows (basically, sophisticated graphical user interfaces).
Java does have some drawbacks. Since it has automated garbage collection, it can tend to use more memory than other similar languages. There are often implementation differences on different platforms, which have led to Java being described as a “write once, test everywhere” system. Lastly, since it uses an abstract “virtual machine”, a generic Java program doesn’t have access to the Native API’s on a system directly. None of these issues are fatal, but it can mean that Java isn’t an appropriate choice for a particular piece of software.
As a general purpose programming language, Java offers a number of features that make the language well suited for use on the Web. Small Java applications, called applets, can be downloaded from a web server and run on your computer by a Java-compatible Web browser.
Applications and websites using Java will not work unless Java is installed on your device. When you download Java, the software contains the Java Runtime Environment (JRE) which is needed to run in a Web browser. A component of the JRE, the Java Plug-in software allows Java applets to run inside various browsers.