Tuesday, January 14, 2020

Java


Introduction to Java Programming Language

Java has been one of the most popular programming languages in the world for a long time now. Java is a high industrial-strength programming language with lots of features and domains of applications. Java was developed by James Gosling, Mike Sheridan, and Patrick Naughton in June 1991. Initially, the language was known as Oak and its name was based on an oak tree that stood outside James Gosling’s office. Later the project was named as green and finally, it was renamed as Java.Java was one of the most popular programming languages in use according to GitHub.

Software developers who create applications in Java programming are benefited by the developing code only once and use it anywhere. We do not need to Port our applications to every Software and Hardware platform. Java Technology provides secure, platform-independent and portable applications.
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 Generally, a programming language is known as a tool to create software applications, but with Java, we can create diverse applications, applets for World Wide Web, simple to large web applications and several other advanced distributed applications. The Java programming language is indeed valuable for distributed network environments like the www. However, Java is well beyond this domain to provide a powerful general-purpose programming language that is suitable for building a variety of applications that do not depend on the network features. Java's ability to execute downloaded code on the remote hosts in a secure manner is a critical requirement for several different organizations.

 Ease of programming, simple syntax, and high safety features enables us to quickly produce working code. Support for features like multi-threading, automatic garbage collection, and exception handling enables us to create more than network-based and GUI-based applications, that attend to the multiple tasks simultaneously in an error-tolerant environment. The mechanism of exception handling enables the task of dealing with error conditions. Powerful built-in tools and simple syntax make Java software developer’s first choice.

 Java programming language is designed for maximum portability with as few implementation dependencies as possible. For example, an int is 32-bit signed two's complement integer in all implementations,. Irrespective of the CPU architecture on which the program is executing. Defining everything possible about the language and its run-time environment, makes programmers execute anywhere and share code with anyone who has a Java run-time environment.

The Java programming language shares many features common to most programming languages in use today. The language should look familiar to C and C++ programmer because Java is designed with C and C + + construct where the languages are very much similar. Java is an object-oriented programming language and supports all of the object-oriented programming features like classes, objects, inheritance, abstraction, polymorphism, and encapsulation.

Java programs are compiled into byte-codes and they are executed in Java Virtual Machine. Java provides write once run anywhere(WORA). Once you have compiled your program into the byte-codes you do not need to recompile this program will stop you just need Java Run-time Environment to execute this code.

There were five primary goals in the creation of the Java language:

  • To create simple, object-oriented, and familiar programming language.
  • To create a robust and secure programming language.
  • To create architecture-neutral and portable programming language.
  • To create a programming language that executes with high performance.
  • To create an interpreted, threaded, and dynamic programming language.


JDK 1.0 was launched on January 23, 1996. The latest version of JDK is Java SE 13  launched on September 17, 2019.