Java JDK, JRE, JVM
Java is one of the most popular programming languages in the world, and is widely used for building enterprise applications, web applications, mobile apps, and more. Java is a versatile language, and has a wide range of applications. To understand Java fully, it is important to understand the differences between the Java Development Kit (JDK), Java Runtime Environment (JRE), and Java Virtual Machine (JVM).
In the below PDF we discuss about JDK, JRE, JVM in detail in simple language, Hope this will help in better understanding.
Java Development Kit (JDK):
The Java Development Kit (JDK) is a software development kit that includes everything you need to create Java applications. The JDK includes the Java compiler, Java Virtual Machine (JVM), and Java class libraries. The Java compiler is used to compile Java source code into Java bytecode, which can be executed on the JVM. The JDK is a critical tool for Java developers, as it provides all the necessary tools and libraries to build, test, and deploy Java applications.
Java Runtime Environment (JRE):
The Java Runtime Environment (JRE) is a software package that allows you to run Java applications on your computer. The JRE includes the JVM, which is responsible for executing Java bytecode. When you install the JRE on your computer, it sets up the environment needed to run Java applications. The JRE does not include the Java compiler or other development tools, as these are included in the JDK.
Java Virtual Machine (JVM):
The Java Virtual Machine (JVM) is an abstract machine that provides a runtime environment in which Java bytecode can be executed. The JVM is responsible for interpreting Java bytecode and executing it on the computer’s hardware. The JVM is designed to be platform-independent, which means that Java bytecode can be executed on any platform that has a compatible JVM installed. This is one of the key features of Java, as it allows developers to write once and run anywhere.
In conclusion, the Java Development Kit (JDK), Java Runtime Environment (JRE), and Java Virtual Machine (JVM) are three key components of the Java platform. The JDK is used by developers to build Java applications, while the JRE is used by end-users to run Java applications. The JVM is the runtime environment that executes Java bytecode on the computer’s hardware. Understanding the differences between these components is important for anyone who wants to develop or run Java applications.