Jvm

2. Anu. S
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3. Disclaimer: This presentation is prepared by trainees of
baabtra as a part of mentoring program. This is not official
document of baabtra –Mentoring Partner
Baabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt . Ltd

4. INTRODUCTION TO JVM
JAVA VIRTUAL MACHINE
JRE
JDK
JIT

5. INTRODUCTION TO JVM
JVM : JAVA VIRTUAL MACHINE
Virtual machine:
gives a program a simplified interface for
interacting with a variety of physical computers and
their operating systems.

6. JAVA VIRTUAL MACHINE
JVM is a software layer which resembles an
hardware platform.
JVM converts Java byte code into machine language
and executes it.
The byte code can be executed on any platform
where there exist JVM.

7. JVM‘s are available for many hardware and
software platforms.
JAVA::"write once, run anywhere”: use of the same byte
code for all JVM’s on all platforms.
JAVA is platform independent.
JVM is platform dependent
JAVA VIRTUAL MACHINE

8. JAVA PROGRAM AT COMPILE TIME AND EXECUTION
TIME

9. JRE
JRE-Java Runtime Environment.
JRE is an implementation of the Java Virtual Machine which
actually executes Java programs.
JRE includes the JVM, Core libraries and other additional
components to run applications written in Java.

10. JDK
JDK-Java Development Kit
JDK is a bundle of software that is used to develop Java
based applications.
Needs more disk space as it contains the JRE along with
various development tools.
JDK includes the JRE, set of API classes, Java compiler, and
additional files needed to write Java applets and applications.

11. JDK-JRE - JVM

12. JIT
JIT : Just In Time Compiler
JIT is a part of the JVM.
JIT compiler helps improve the performance of Java programs.
It compiles parts of the byte code that have similar functionality
at the same time.

13. THANK YOU...

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