JRE vs JVM vs JDK

Feature	JRE	JVM	JDK
Purpose	Runs Java applications	Executes bytecode	Develops Java applications
Includes JVM?	Yes	-	Yes
Includes Development Tools?	No	No	Yes (Compiler, Debugger, etc.)
Use Case	Running Java programs	Low-level execution	Writing and compiling Java code

Conclusion:

• JRE is required for end users who only want to run Java applications.
• JDK is required for developers to build and compile Java programs.
• JVM is a part of both JRE and JDK, responsible for executing Java bytecode.