SDK, JDK, JRE,

Hi everyone,
I'm very very new to Java etc. I want to learn JSP/Servlets.
Now I see I need to install software, I see things as SDK, JDK, JRE what is this all? What do I need?
I tried to find the info but there is so much information I'm not sure what I'm looking at. So I thought if there is any expert here that can clearly explain what the difference is between SDK, JDK, JRE.
Thank you very much!!
Regards,
Steven.

JDK:     When you download Java, you will get a couple of tools: the compiler, a tool to generate documentation, a tool to change security settings and a tool to run compiled Java programs (class files). All of these tools bundled together is called the Java Development Kit (JDK). If you want to create your own Java program, this is what you need. Later we will show you where you can get the JDK, and how you should use it.
SDK:      Since the introduction of JDK version 1.2, a different name is used for the Java Development Kit: Java 2 Software Development Kit (SDK).
JRE:      The Java Runtime Environment (JRE) is part of the JDK. It contains only those tools that are needed to run java programs. It does not contain the compiler. Therefore it is a lot smaller than the JDK. If you develop a Java program for someone else, you are allowed to give him the program and the JRE so he can run your program. Officially you are not allowed to distribute the JDK, but anyone can download it freely from internet. The JRE for Windows also contains the Java plugin.
from: http://www.win.tue.nl/~marko/java/
To get Java set up, follow the tutorial "First Cup of Java":
http://java.sun.com/docs/books/tutorial/getStarted/cupojava/

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Thuesday     106196     123072     194944     123348     130484     6072     5840
Wednesday     110836     132288     194944     132416     130484     4408     5140
Thursday     108200     144980     194944     145140     130484     4888     5148
Friday     109440     158319     194944     161334     130484     4911     4992
Monday     111600     209060     228548     209148     130484     5184     3484
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We have had this problem for six month and we are totaly out of idea.
If you can give us any idea, we'll appreciate a lot.
Thanks in advance,
BERGMANN Yannick
IRM SA - Software Engineer
Tel. (32)4/239.90.10
Tel. (32)4/239.90.74 (direct)
Fax (32)4/263.40.97
E-mail [email protected]

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Well...SDK stands for Software Development Kit
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Dear All,
Please tell me the diffrence among JDK,JRE,JVM

http://www.jguru.com/faq/view.jsp?EID=46223

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Oh OK.Are the setup procedures the same as in jdk?How do you use it with your java editor,once installed??Thanx again!
Aesh83

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Cheers,

Shutt up guys... one person is to know some thing about JDK/JRE, and you.....
Any way
Hi tnischal!
Your question was about JDK/JRE
JDK = Java Development Kit
JRE = Java Runtime Environment
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What is the difference between jdk,jre,jvm?

hai friends
i am new to java,
can any body send the answer to this question
what is the difference between jdk, jre, jvm?

You know, you can search the Internet using google:
http://www.google.com
Type in What is the JVM? You'll be amazed at the results!!

SDK, JDK, JRE,

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