The main features of Java are that it is an object-oriented, portable, and secure programming language. In addition to these features, there are many others. Below is a list of some of the best Java features.
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Java syntax is easy to learn and understand, and that is why Java is one of the most learned languages.
Java is an object-oriented programming language. The object-oriented programming model is based on working with classes and objects. Java fully supports OOP. More on that in future lessons.
Java is a write-once, run-anywhere language. One of the best advantages of Java is that programs can run on different machines without changing the code.
We say that Java is platform-independent. This independence is possible because the Java program is not running directly on your computer but on the virtual machine installed on your computer with the Java Software Development Kit (JDK).
This virtual machine is called Java Virtual Machine. (JVM) Before the Java Virtual Machine can understand your Java program, it must be converted or translated into a language it understands. This conversion is a process when you compile your Java program.
Compiling the Java program is when the file with bytecode gets created. This bytecode is a platform-independent code because it can be executed on multiple platforms. Therefore, it does not matter whether you are working on Linux, Windows, or a MAC computer, all you need to do is install the Java JRE, and you will be able to run any Java program.
The main reason that Java is a secure programming language is that its code is executed on a virtual machine (JVM).
In Java, you can write a program that can do many tasks simultaneously. Multithreading is a program execution model that allows multiple threads to be created within a process, executing independently and concurrently.
Java is not fast as a compiled language like C or C++, but Java enables high performance using a just-in-time compiler, and the bytecode is very close to native code.