USEFULNESS OF JAVA AS A PROGRAMMING LANGUAGE
Java is a programming language expressly designed for use in the distributed environment of the Internet. It was designed to have the “look and feel” of the C++ programming language, but it is simpler to use than C++ and enforces an object-oriented programming model. ‘
Java is a programming language, designed to be concurrent, class based and object oriented, as well as a computing platform first released by Sun Microsystems in 1995. An enormous amount of applications and websites will not work unless you have Java installed, and more are created every day. Denying yourself Java is akin to denying yourself access to a technological infrastructure. Java is advertised, and esteemed for its fast performance, security, and reliability.
From laptops to datacenters, game consoles to scientific supercomputers, cell phones to the Internet, Java is ubiquitous.
TYPES OF JAVA
What is Java and types of Java?
The types of the Java programming language are divided into two categories: primitive types and reference types. The primitive types (§4.2) are the boolean type and the numeric types. The numeric types are the integral types byte , short , int , long , and char , and the floating-point types float and double .
Following are the notable features of Java:
In Java, everything is an Object. Java can be easily extended since it is based on the Object model.
Unlike many other programming languages including C and C++, when Java is compiled, it is not compiled into platform specific machine, rather into platform-independent byte code. This byte code is distributed over the web and interpreted by the Virtual Machine (JVM) on whichever platform it is being run on.
Java is designed to be easy to learn. If you understand the basic concept of OOP Java, it would be easy to master.
With Java’s secure feature it enables to develop virus-free, tamper-free systems. Authentication techniques are based on public-key encryption.
Java compiler generates an architecture-neutral object file format, which makes the compiled code executable on many processors, with the presence of Java runtime system.
Being architecture-neutral and having no implementation dependent aspects of the specification makes Java portable. The compiler in Java is written in ANSI C with a clean portability boundary, which is a POSIX subset.
Java makes an effort to eliminate error-prone situations by emphasizing mainly on compile time error checking and runtime checking.
With Java’s multithreaded feature it is possible to write programs that can perform many tasks simultaneously. This design feature allows the developers to construct interactive applications that can run smoothly.
Java byte code is translated on the fly to native machine instructions and is not stored anywhere. The development process is more rapid and analytical since the linking is an incremental and light-weight process.
With the use of Just-In-Time compilers, Java enables high performance.
Java is designed for the distributed environment of the internet.
Java is considered to be more dynamic than C or C++ since it is designed to adapt to an evolving environment. Java programs can carry an extensive amount of run-time information that can be used to verify and resolve accesses to objects at run-time.
IMPORTANCE OF JAVA
Java is one of the most popular programming languages used to create Web applications and platforms. It was designed for flexibility, allowing developers to write code that would run on any machine, regardless of architecture or platform. According to the Java home page, more than 1 billion computers and 3 billion mobile phones worldwide run Java.
Java is used to build applications and platforms for a number of devices, including computers, laptops, gaming consoles, Blu-ray players, car navigation systems, medical monitoring devices, parking meters, lottery terminals and smartphones. It is also a key language for networking, particularly for data centers that store and transfer Web-based data.
Java is also used to create miniature, dynamic programs that run alongside or are embedded within Web pages. These programs are called applets and can be used to display maps, weather, games or other interactive widgets or tools on a Web page.https://cc2509cefdc61a3a4d03daa4337ea410.safeframe.googlesyndication.com/safeframe/1-0-37/html/container.html
Based on a C and C++-based syntax, Java is object-oriented and class-based. Developers adopt and use Java because code can be run securely on nearly any other platform, regardless of the operating system or architecture of the device, as long as the device has a Java Runtime Environment (JRE) installed. The JRE varies depending on the specific type of device, but essentially it runs a “virtual” machine, or environment, that translates the code into an application or program.