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Let us now compare Java Virtual Machine, JRE, and JDK. The following are the key distinctions between JDK, JRE, and JVM.

Sr. No.	Key	JDK	JRE	JVM
1	Definition	The Java Development Kit (JDK) is a software development kit for creating Java applications. JDK includes a number of development tools in addition to JRE (compilers, JavaDoc, Java Debugger etc.).	JRE (Java Runtime Environment) is the JVM implementation and is defined as a software package that includes Java class libraries, a Java Virtual Machine (JVM), and other components for running Java applications.	JVM (Java Virtual Machine) is a platform-independent abstract machine with three concepts: specification, a document describing JVM implementation requirements, implementation, a computer program that meets JVM requirements, and instance, an implementation that executes Java byte code.
2	Prime functionality	JDK is a programming language that is primarily used for code execution and development.	JRE, on the other hand, is primarily responsible for creating the environment in which code can be executed.	JVM, on the other hand, specifies all implementations and is responsible for providing them to JRE.
3	Platform Independence	JDK is platform-dependent, which means that different JDKs are required for different platforms.	JRE, like JDK, is platform-dependent.	JVM is platform-independent.
4	Tools	Because JDK is in charge of primary development, it includes tools for creating, debugging, and monitoring Java applications.	JRE, on the other hand, does not include tools like a compiler or a debugger. Rather, it contains the class libraries and other supporting files required by JVM to run the program.	Software development tools are not included in the JVM.
5	Implementation	JDK = Java Runtime Environment (JRE) + Development tools	JRE = Java Virtual Machine (JVM) + Libraries to run the application	JVM = Only Runtime environment for executing the Java byte code.

Note: also read about the Byte Code in Java

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