File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes Beginning Java and the fly likes JRE,JVM & Plugins Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » Beginning Java
Bookmark "JRE,JVM & Plugins" Watch "JRE,JVM & Plugins" New topic
Author

JRE,JVM & Plugins

Angela D'souza
Ranch Hand

Joined: Jan 16, 2002
Posts: 469
Hi,
what is difference between JRE, JVM & Java Plugins?
Thanks,
Angela
Brett Anthoine
Greenhorn

Joined: Mar 12, 2002
Posts: 27
Hi,
JRE means Java Runtime Environment and is the runtime necessary to run a compiled java class. In fact JRE is the entire package with all the necessary files to run a java program, including the :
JVM ,Java Virtual Machine which is part of either the JRE and the SDK (standard development kit), and is used to run the java program. It is like an interpreter.
Java plugins are (I think) all the optional packages like Java3D or the Java Media Framework.
feel free to look at Sun java website for more info.
Bye
[ April 06, 2002: Message edited by: Brett Anthoine ]

Brett Anthoine<br />"640k should be enough for anybody."
Anthony Villanueva
Ranch Hand

Joined: Mar 22, 2002
Posts: 1055
You can also try out this link.
-anthony
Andres Gonzalez
Ranch Hand

Joined: Nov 27, 2001
Posts: 1561

JRE means Java Runtime Environment and is the runtime necessary to run a compiled java class. In fact JRE is the entire package with all the necessary files to run a java program, including the :
JVM ,Java Virtual Machine which is part of either the JRE and the SDK (standard development kit), and is used to run the java program. It is like an interpreter.

Hi Brett... what I understood from you is that if you download the JRE you get everything, including the SDK.
I don't know if you read my post "javac is killing me". I had downloaded the JRE and the javac file was not there, I had to download the JDK separately.
So, can you just download the JDK and not bother about the JRE or are they connected to each other?
cheers


I'm not going to be a Rock Star. I'm going to be a LEGEND! --Freddie Mercury
Brett Anthoine
Greenhorn

Joined: Mar 12, 2002
Posts: 27
Hi Andres,
Sorry if I've been confusing on this one. (English is my third language )
You're right the JRE doesn't include the compiler (javac).
The JRE is part of the JDK but can be used alone.
If you look into your Jdk directory , you'll find a directory named JRE...
Hope it's clearer now
Andres Gonzalez
Ranch Hand

Joined: Nov 27, 2001
Posts: 1561
It is Brett....
thanks...
cheers
Angela D'souza
Ranch Hand

Joined: Jan 16, 2002
Posts: 469
Thanks to all,
So what I concluded is:
JRE -- Includes JVM, Java Core library files, class file to run the java program
JVM - is a intepreter & includes Class Loader to load the class files and JIT to covert java byte codes to Machine language.
Java Plugins - includes JRE.
SDK - Includes "javac" & "java".
Thanks,
Angela
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: JRE,JVM & Plugins
 
Similar Threads
What is JVM ?
jre & jvm
difference between JDK, JRE, JVM, plugin
difference between JRE & JVM
Re:JRE and JVM