These Slides are Represent the overall Chapter of Java Environment. It includes Architecture of JVM, JRE, JDK. Uses Types for JVM also included.

2. Three Components
• JDK - Java Development Kit
• JVM – Java Virtual Machine
• JRE – Java Runtime Environment

3. JDK
• Writing Java applets and applications needs development
tools like JDK.
• Java developers are initially presented with two JDK tools,
java and javac.
• Both are run from the command prompt.
• It's easy for both new and experienced programmers to get
started.

4. JDK Architecture

5. JRE
• JRE is an acronym for Java Runtime Environment.
• It is also written as Java RTE.
• The Java Runtime Environment is a set of software
tools
• It physically exists.
• It contains a set of libraries + other files that JVM
uses at runtime.

6. JRE Architecture

7. JVM
• JVM is a engine that provides runtime environment
to drive the Java Code or applications.
• It converts Java byte code into machines language.
• Java compiler produces code for a Virtual Machine
known as Java Virtual Machine.

8. JVM Architecture

9. USES of JDK, JRE, JVM
• The Java Virtual Machine is built right into
your Java software download, and helps run
Java applications.
• The JRE allows applets written in the Java
programming language to run inside various
browsers.

10. JVM Performance
Loads Code
Verifies
Code
Executes
code
Runtime
Environment

11. JVM WORKS
Verifying
Code
Lining code
Reading
Code

12. Types of JVM
Java Hot Spot
Client VM
Java Hot spot
Server VM

13. Difference Between JDK, JRE, JVM

14. CONCLUSION
• The Java Runtime Environment is the on-disk program that
loads Java applications for the JVM to execute.
• It's helpful to understand how the JVM, JDK and JRE
interact, especially for working in cloud and devops
environments.
• Also used for Development Applications.