Features of Java Programming Language

Computer science

The main purpose of Java programming language production was to make such a language which is simple, portable and secure. The popularity of Java is not only because of simplicity, security and portability but there is a number of characteristics which plays an important role. The most important features of  Java are,

    • Simple: Java is very simple to learn if one has experience in using c++ because its syntax is based on c++.  Java also removed complicated features like operator overloading and explicit pointer. Java has automatic garbage collection therefore there is need to remove unreferenced objects.




    • Secured: Java is best known for its security. Using java one can develop a secure and virus free application. Java is secured because it does not use the explicit pointer.  The byte code verifier checks the code parts for unauthorized code that can violate access to objects.
    • Robust: Java is a robust programming language which simply means java is strong because there is a lack of pointers, uses strong memory management, automatic garbage collection and exception handling. All these points make java a robust language.
    • Object-oriented:  Java is an object-oriented language where the concepts of oops for developing an application are used (Abstraction, Encapsulation, Inheritance, Polymorphism). Everything in java is an object where data and functions are binds together.




    • Architecture-neutral: Java is architecture-neutral because there are no implementation-dependent features, for example, the size of primitive types is fixed.

      In C programming, int data type occupies 2 bytes of memory for 32-bit architecture and 4 bytes of memory for 64-bit architecture. However, it occupies 4 bytes of memory for both 32 and 64-bit architectures in Java.

    • Portable:  Java facilitates us to carry the Java bytecode to almost any platform. It doesn’t require any implementation. This facility of java makes it portable.




    • High-performance:  The java bytecode is close to native code which makes it faster than other interpreted languages but it slower than compiled languages like c,c++.

    • Multi-threaded: A thread is an independent path of execution(A separate programme) in a program. Many threads can run concurrently in a Java language application which makes java multithreaded. The main gain of multi-threading is that it doesn’t occupy memory for each thread. It shares a common memory area. Threads are essential for multi-media, Web applications.




  • Dynamic: Java is a dynamic language. It supports dynamic loading of classes. It means classes are loaded on demand. It also supports functions from its native languages, i.e., C and C++.

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