The features of any programming language are the services or the facilities provided by that language. The various features of java language are
1. Simple
The java language is called as simple programming language because of the following reasons:
a) The syntax of java language is similar to other programming languages like C,C+ etc. & therefore, simple to migrate from other languages.
b) The complex topics like pointers, templates etc. are eliminated from java making it simple.
c) In the java language the programmer is responsibility for only allocation of memory. The deallocation of the memory is done by the garbage collector.
2. Object Oriented
The java language is called as object oriented language. Any language can be called as object oriented if the development of the application is based on objects and classes.
Object
Any entity that exists physically is this real world which requires some memory is called object.
Every object contains some properties and some actions. The properties are the data which describes the object and the actions are the tasks or the operations performed by the objects.
Class
A class is collection of common properties, and common actions of group of objects. A class can be considered as a plan or a model or blue print for creating the objects. For every class we can create any number of objects and without a class object can not be created.
Example:
Class: Student
Object: Rajesh, Amith
3 Secured
Security is one of the most important principles of any programing language. The java language contains in-built security programs for protecting the data from unauthorized usage.
4 Distributed
Using the distributed feature we can access the data available in multiple machines and provide it to the user. Using this feature we can improve the performance of the application by making the data more available and more accessible.
5 Platform Independent or Machine Independent or Architecture Neutral:
The java program can be executed on any machine irrespective of their hardware, software, architecture, operating system etc. therefore it is called a platform independent language.
C Language:
When we compile a C program, the compiler verifies whether, the “C” language instructions are valid not, if valid the compiler generates .exe file containing machine language instructions
Demo.C——-Compiler———–> Demo.exe
C lang inst ————————— machine lang inst
The machine language instructions available in the .exe files generated by the compiler can be executed only in that machine, where it is compiled. If we want to execute the C program is another, then we need recompile and execute. This nature of C language makes it machine dependent or platform dependent language.
Java Laguage
When we compile a java program, the compiler verifies whether the java language instructions are valid or not, if valid the compiler will generate .class file containing special java instructions (Byte code instruction)
Demo.java—-Compiler—–>Demo.class
Java lang inst ——————————- Special java lang list byte code inst
The special java instructions available in the .class file generated by the compiler can be executed on any machine with help of of JVM, without recompiling it. This nature of java language makes it platform independent.
6 Interpreted
The java language is said to interpreted language as the execution of the program is done by the interpreter available inside the JVM.
7 High Performance
The execution of a java program is done by an interpreter along with a special compiler called JIT compiler, thereby reducing the execution time and improving the performance of the application.
8 Portable
The java language is said to be portable language using which we can develop an application which is a collection of small components which can be replaced and reused.
9 Multithreaded:
A language is said to be multithreaded, if it supports multithreading. Every thread in java program is a control. If the program contains multiple controls then we can reduce the waiting time, and provide response faster and improving the performance.
10 Dynamic
The java language is said to be dynamic because the allocation of memory is done at execution time according to the requirement.
11 Robust
The java language is said to be strong programing language, because of the following reasons.
a) Memory management:
In java language the allocation of memory and deallocation of memory, both are efficient. During the memory allocation time, there will be no wastage of memory and deallocation is done by garbage collector which is also efficient as the unused will be removed.
b) Exception Handling:
The error that occur at runtime because of the logical failure or invalid inputs are called exception’s. When an exception occurs the application will be terminated abnormally and executed incompletely.
In order to execute the code completely and terminate normally, we take help of execution handling. The process of exception handling in java is simple and efficient.