Important features of Java
The following are some important features of Java Programming Language:
- Platform Independent
- Architectural Neutral
- Dynamic and Extensible
- Multi Threading
- High Performance
- Object Oriented
The Java language is easy to learn and its coding style is easy to read and write. It contains many features of other Languages like C and C++ and Java removes complexity because it doesn't use pointers and doesn't support Multiple Inheritance.
This is where the "Write Once, run anywhere" motto for Java comes in. It means that you can develop on one environment(Operating System) and run on another environment without doing any modification of the code.
More about.... Platform Independent of Java
Java application runs the same bytecodes regardless of any environment (Operating System). To enable a Java application to execute anywhere on the network, the compiler generates an architecture-neutral object file format.
Dynamic and Extensible
Java has Dynamic and Extensible means with the help of OOPS you can add classes and plug in new methods to classes, creating new classes through sub classes. This makes Java very easy to augment with your own classes or even to modify.
Java programs can execute in any environment (Linux,Window,Mac etc.) for which there is a Java run-time system (JVM). That really means there is no implementation dependent features.
Java supports Multithreading. Multithreading means handling more than one job at a time, so get more process get done in less time than it could with just one thread.
Java was designed with the distributed environment. It has networking facilities, so it can be transmit, run over internet. for ex. RMI and EJB are used for creating distributed applications.
Java is mainly designed for web based applications. Java masks lot of complexity by providing classes for you that already implements the hard parts, such as creating socket connections, reading the contents of the URL as a file etc. Moreover, J2EE is used for developing network based applications.
Robust simply means strong. Its capability to handle Run-time Error, automatic garbage collection, the lack of pointer concept, Exception Handling etc. makes java robust.
The Java platform is designed with security features built into the language and runtime system such as Bytecode verification for distrusted code, support for authentication and privacy etc. Java program always runs in Java runtime environment with almost null interaction with OS, hence it is more secure.
Although Java is an interpreted language, it was designed to support "just-in-time" compilers, which dynamically compile bytecodes to machine code. Bytecodes are highly optimized, so Java Virtual Machine can executed them much faster.
Java supports Inheritance, encapsulation and polymorphism, the three major Object Oriented constructs that distinguish a language as Object-Oriented.
- Java Interview Questions-Core Faq
- What is the difference between JDK and JRE?
- What gives Java its 'write once and run anywhere' nature?
- What is JVM and is it platform independent?
- What is Just-In-Time (JIT) compiler?
- What is the garbage collector in Java?
- What is NullPointerException in Java
- Difference between Stack and Heap memory in Java
- How to set the maximum memory usage for JVM?
- What is numeric promotion?
- Why do we need Generic Types in Java?
- What does it mean to be static in Java?
- What are final variables in Java?