43.Features of JAVA I

Platform IndependentThe concept of Write-once-run-anywhere (known as the Platform independent) is one of the important key feature of java language that makes java as the most powerful language. Not even a single language is idle to this feature but java is more closer to this feature. The programs written on one platform can run on any platform provided the platform must have the JVM. 

SimpleThere are various features that makes the java as a simple language. Programs are easy to write and debug because java does not use the pointers explicitly. It is much harder to write the java programs that can crash the system but we can not say about the other programming languages. Java provides the bug free system due to the strong memory management. It also has the automatic memory allocation and deallocation system.

Object OrientedTo be an Object Oriented language, any language must follow at least the four characteristics.

• Inheritance   :   It is the process of creating the new classes and using the behavior of the existing classes by extending them just to        reuse  the existing code and adding the additional features as needed.
• Encapsulation:  :   It is the mechanism of combining the information and providing the abstraction.
• Polymorphism:   :   As the name suggest one name multiple form, Polymorphism is the way of providing the different functionality by the
     functions  having the same name based on the signatures of the methods.
• Dynamic binding  :   Sometimes we don't have the knowledge of objects about their specific types while writing our code. It is the way     of providing the maximum functionality to a program about the specific type at runtime.  

As the languages like Objective C, C++ fulfills the above four characteristics yet they  are not fully object oriented languages because they are structured as well as object oriented languages. But in case of java,  it is a fully Object Oriented language because object is at the outer most level of data structure in java. No stand alone methods, constants, and variables are there in java. Everything in java is object even the primitive data types can also be converted into object by using the wrapper class.

RobustJava has the strong memory allocation and automatic garbage collection mechanism. It provides the powerful exception handling and type checking mechanism as compare to other programming languages. Compiler checks the program whether there any error and interpreter checks any run time error and makes the system secure from crash. All of the above features makes the java language robust.

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