Java Definition and Meaning
Java is a multi-platform, object-oriented, and network-centric language. It is among the most used programming language. Java is also used as a computing platform.
It is considered as one of the fast, secure, and reliable programming languages preferred by most organizations to build their projects.
What is Java used for?
Components of Java Programming Language
A Java Programmer composes a program in an intelligible language called Source Code. Accordingly, the CPU or Chips never comprehend the source code written in any programming language.
These PCs or chips see just something single, which is called machine language or code. These machine codes run at the CPU level. In this way, it would be distinctive machine codes for different models of CPU.
Notwithstanding, you need to stress over the machine code, as writing computer programs is about the source code. The machine comprehends this source code and interprets them into machine justifiable code, which is an executable code.
This load of functionalities occurs inside the accompanying 3 Java stage parts:
Java Development Kit (JDK)
JDK is a software development environment used for making applets and Java applications. The full form of JDK is Java Development Kit. Java developers can use it on Windows, macOS, Solaris, and Linux. JDK helps them to code and run Java programs. It is possible to install more than one JDK version on the same computer.
Why use JDK?
Here are the main reasons for using JDK:
Java Virtual Machine (JVM):
Java Virtual Machine (JVM) is an engine that provides a runtime environment to drive the Java Code or applications. It converts Java bytecode into machine language. JVM is a part of the Java Run Environment (JRE). In other programming languages, the compiler produces machine code for a particular system. However, the Java compiler produces code for a Virtual Machine known as Java Virtual Machine.
Here are the important reasons for using JVM:
Java Runtime Environment (JRE)
JRE is a piece of software that is designed to run other software. It contains the class libraries, loader class, and JVM. In simple terms, if you want to run a Java program, you need JRE. If you are not a programmer, you don't need to install JDK, but just JRE to run Java programs.
Why use JRE?
Here are the main reasons for using JRE: