The primary objective of Java programming language creation was to make it portable, simple and secure programming language. In addition, there are a number of excellent characteristics that contribute significantly to this language’s popularity. Java buzzwords refer to the software’s features. Simple
Java is very easy to learn, and its syntax is simple, clean and easy to understand. According to Sun Microsystem, Java language is a simple programming language because:
Java syntax is based on C++ (so easier for programmers to learn it after C++).
Explicit pointers, operator overloading, and other complicated and infrequently used features like these have all been removed from Java. There is no need to remove unreferenced objects because there is an Automatic Garbage Collection in Java.
Object-oriented
Java is an object-oriented programming language. Everything in Java is an object. Object-oriented means we organize our software as a combination of different types of objects that incorporate both data and behavior.
Platform Independent
Java is platform independent
Java is a language that can be written once and run anywhere, in contrast to other languages like C, C++, and so on, which are compiled into platforms-specific machines. The hardware or software environment in which a program runs is called a platform. There are two types of platforms software-based and hardware-based. Java provides a platform that is based on software. The Java platform differs from most other platforms in the sense that it is a software-based platform that runs on top of other hardware-based platforms. It consists of two parts: Runtime Environment
API stands for “Application Programming Interface.” Java code can be executed on multiple platforms, for example, Windows, Linux, Sun Solaris, Mac/OS, etc. The compiler compiles and transforms Java code into bytecode. This bytecode is a platform-independent code because it can be run on multiple platforms, i.e., Write Once and Run Anywhere (WORA).
Secured
Java’s security is its most prominent feature. With Java, we can develop virus-free systems. Java is secured because:
No explicit pointer
Java Programs run inside a virtual machine sandbox
how Java is secured
Classloader: Classloader in Java is a part of the Java Runtime Environment (JRE) which is used to load Java classes into the Java Virtual Machine dynamically. It adds security by separating the package for the classes of the local file system from those that are imported from network sources.
Bytecode Verifier looks for illegal code in the code fragments to break objects’ access rights. Security Manager: It determines what resources a class can access such as reading and writing to the local disk.
Java language provides these securities by default. Through SSL, JAAS, cryptography, etc., an application developer can also explicitly provide some security. Robust
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The English mining of Robust is strong. Java is durable due to: It uses strong memory management.
There aren’t enough pointers to avoid security issues. To get rid of objects that are no longer being used by a Java application, Java provides an automatic garbage collection feature that runs on the Java Virtual Machine. There are exception handling and the type checking mechanism in Java. Java is robust because of all of these factors. Architecture-neutral
Java has no implementation-dependent features, like the fixed size of primitive types, making it architecture neutral. 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 takes up 4 bytes of memory in Java’s 32-bit and 64-bit architectures. Portable
Java is portable because it facilitates you to carry the Java bytecode to any platform. It doesn’t require any implementation.
High-performance
Java is faster than other traditional interpreted programming languages because Java bytecode is “close” to native code. It is still a little bit slower than a compiled language (e.g., C++). Java is slower than compiled languages like C, C++, and so on because it is an interpreted language. Distributed
Java is distributed because it facilitates users to create distributed applications in Java. RMI and EJB are used for creating distributed applications. By using this Java feature, we can access files from any computer connected to the internet by calling the methods. Multi-threaded
A thread is like a separate program that runs at the same time. By defining multiple threads, we can create Java programs that simultaneously handle multiple tasks. The main advantage of multi-threading is that it doesn’t occupy memory for each thread. It shares a common memory area. Threads are important for multi-media, Web applications, etc.
Dynamic
Java is a dynamic language. It supports the dynamic loading of classes. It indicates that classes are filled as needed. It also supports functions from its native languages, i.e., C and C++.
Java allows for automatic memory management (also known as garbage collection) and dynamic compilation.
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