Installing JDK and JRE, how?

I am new to Java. So new in fact that after 6 months I still have not managed to accomplish any of the basics concerning JAVA and I am in desperate need to get it to function. Perhaps you can help? On my XP I have downloaded the JDK and successfully set a path, but not a single program ran after it has gone through the compiler? Huh? I just don't get it! So, I have moved on a little bit and I am working off my Vista. I have learnt that the JRE and JDK are not the one and the same. I need BOTH if I want to start programming. I have the JRE 6 installed and working fine but I cannot even download the JDK! What is going on, does everybody encounter these problems or just me? Once, if ever, it is down loaded how do I set the path on Vista? Furthermore, would I need anything more other than the JRE and JDK? I really need help here. Why is JAVA being so problematic and why isn't there a nice and easy starting point? All I want to do is program.

Yep, 6 months is a heck of a long time, but it has not been continuous! I have a second degree in maths to complete. Free time is rare and I have had so much bad advice from people who thought they knew what they were doing. I hope here to make up lost time and get the right advice which I need!

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Errors installing and uninstalling JDK and JRE 5.0 update 6

I recently removed some older versions of java as they take up alot of space.. now wondering if i should have.
I uninstalled all version fine, leaving only the update 6 for both JDK and JRE. Now when i try to compile in Jcreator i get the error message:
'Error : Invalid path, "C:\ProgramFiles\Java\jdk1.5.0_05\bin\javac.exe" -source 1.5 -classpath "C:\Program Files\Xinox
Software\JCreatorV3LE\MyProjects\Chapter07_Listing03" -d C:\Program"
Files\Xinox "Software\JCreatorV3LE\MyProjects\Chapter07_Listing03
@src_chapter07_listing03.txt"'
I have no javac file in the directory.I did before i unstalled the older updates
I am getting a windows installer error when trying to install JDK 5.0 update 6, windows installer works when trying to uninstall though. When i try to remove JDK 5.0 update 5, it tells me i all ready have this version installed, and to uninstall through my add/remove utility which is what i am doing! Then if i click ok i get: 'Fatal error during installation' This also occurs when trying to remove update 6. I also get problems with my JRE 5.0 update 6. When trying to uninstall i get the message 'error applying transforms, verify paths are valid' I cannot get rid of these!. It seems to be interfering/linked with installing them aswell.
PLEASE HELP ME-i just want to compile
Thank you

This forum is for Sun Java Studio Creator product only... We'll be happy to assist you anytime if you have trouble installing or using this product. :-)

Upgrading JDK and JRE in 10.2.0.4 Oracle_Home of 11.5.10.2 EBS ?

I've tried to find something at Metalink but failed.
What's the lastest Java Version certified to use with the database ORACLE_HOME (10.2.0.4) in 11.5.10.2 EBS? And what's the procedure to update it?
There is no hint in note 300482.1 "Overview of Using Java with Oracle E-Business Suite Release 11i" and the Java version related documents.
I found note 418399.1 "How To Update The Default JDK and JRE Installed In Oracle Database Home 10.1 and 10.2" which states "...When installing a new version it is important that the major version (1.4) remains the same, and you only change the "update" number...." But that note is not EBS related.
So is there no way to update Java in ORACLE_HOMEs beyond 1.4?
Thanks
Martin

Hi Hussein,
thx for your help!
There is no special cause. I'm trying to keep our installations current.
I thought that I had to update the Database JDK in earlier cases before migrating to autoconfig or before applying MPs. And as Steven Chan wrote something about [the implications of end-of-life of J2SE 1.5 for EBusiness Suite in his blog|http://blogs.oracle.com/stevenChan/2009/06/understanding_j2se_15_endoflife_implications_for_apps.html] I thought that I better should check if I got to update the DB Oracle_Homes, too.
Martin

What is the difference between jdk and jre

what is the difference between jdk and jre
plzz tell me in detail

It's an extremely important skill to learn how to search the web. Not only will it increase your research and development talents, it will also save you from asking questions that have already been answered numerous times before. By doing a little research before you ask a question, you'll show that you're willing to work and learn without needing to have your hand held the entire time; a quality that is seemingly rare but much appreciated by the volunteers who are willing to help you.
If you've done the research, found nothing useful, and decide to post your question, it's a great idea to tell us that you've already searched (and what methodologies you used to do your research). That way, we don't refer you back to something you've already seen.
To get you started, here is an excellent resource: The Java� Glossary

JDK and JRE comptability for Windows server 2008

Hi,
Could someone please let me know what are the JDK and JRE versions that are comptabile with Windows server 2008 ?
Thanks.

Hi,
For security purposes, the IP address for the Windows Update web site constantly changes and it is not a fixed address. Also, there is no official publication of the
IP addresses. We normally advise against defining IP addresses on the firewall for this purpose. Instead, we suggest either allowing all outbound connections to http & https ports or defining the DNS addresses as permitted destinations for traffic via
the firewall.
For up-to-date information about the IP's being used by Windows Update, use the DNS system, as this is the only reliable up to date source of information. If you use
DNS, make sure the following destination hosts are specified:
http://windowsupdate.microsoft.com
http://*.windowsupdate.microsoft.com
https://*.windowsupdate.microsoft.com
http://*.update.microsoft.com
https://*.update.microsoft.com
http://*.windowsupdate.com
http://download.windowsupdate.com
http://download.microsoft.com
http://*.download.windowsupdate.com
http://wustat.windows.com
http://ntservicepack.microsoft.com
http://stats.microsoft.com
https://stats.microsoft.com
Thanks for your understanding.
Best Regards,
Nina
This posting is provided "AS IS" with no warranties, and confers no rights.

Whatz the difference between jdk and jre

i would like to know the difference between jdk and jre.

Yes JRE is Java Run Time Environment. The java programming language adds the portability by converting the source code to byte code version which can be interpreted by the JRE and gets converted to the platform specific executable ones. Thus for different platforms one has corresponding implementation of JRE. But JRE has to meet the specification JVM (Java Virtual Machine) Concept that serves as a link between the Java libraries and the platform specific implementation of JRE. Thus JVM helps in the abstraction of inner implementation from the programmers who make use of libraries for their programmes.
The JDK(Java Developmental Tool kit) comes along with java libraries and JVM embedded in it. Apart from these it comes along with the utility tools for byte code compilation "javac", Executing the byte codes through java programmes through "java" and many more utilities found in the binary directory of java. Speaking practically JDK is essential for developers, which comes along with library packages to develop Software programmes. While JRE is minimal set of programmes which executes the java class files developed by the software developers.

Major Difference between JDK and JRE

Hi Support,
Major Difference between JDK and JRE
can you please distinguish between these two ,
Thanks

860707 wrote:
Hi Support,This isn't 'support' it's a forum.
Major Difference between JDK and JREYes, there is.
can you please distinguish between these two ,
Here.
db

Cannot find JDK and JRE?

I am configuration Hyperion, and it pops up an information say: Cannot find JDK or JRE, I have set the JAVA_HOME environment variable to c:\Program Files\Java\Jdk.1.6, but still get this error, what's wrong with me?

Hi,
It does not use the JAVA_HOME environment variable, it will try to use the JRE installed with hyperion, if it can't find it then you receive the error message.
The JRE's should be in the \Hyperion\common directory e.g. \Hyperion\common\JRE or \Hyperion\common\JRE-64
If you don't have these directories then something has gone wrong with the installation.
Cheers
John
http://john-goodwin.blogspot.com/

Install jDK and Tomcat on Solaris64

1. hi all, before I always run JDK and tomcat on Win ,righ now I want to try them on Solaris64, I just wonder do I need to set path and classpath ? where and how to set it?
2.on asp.net we can use free toollike WinMerge to comapre which part of code be change, in java or jsp , is there any this kind of free compare tool.
thank you

If you drop the /bin portion it should work. JAVA_HOME is the directory that the SDK installed in.

Updating java when using JDK and JRE

Ok, so after you make a program in java and compile it, you then install the new update of java. Wouldn't the virtual machine(JRE) or java development kit(JDK) notice something thats different and bring up an error?
Do you have to use the same JDK as JRE that you have, because if you didn't have the most updated one, wouldn't there come up with an error?
Last question, if you have used the command line to compile a program, then you know that you need to use javac to compile and java to run it. Well when you use the command javac to compile, then you are using the JDK; and if you use the java command to run it, then you are using JRE. This is just a question to make sure that I have this correct, So correct me if I'm wrong.

brown16b wrote:
Ok, so after you make a program in java and compile it, you then install the new update of java. Wouldn't the virtual machine(JRE) or java development kit(JDK) notice something thats different and bring up an error? Why? A newer Java version should be able to execute programs compiler for a prior version.
Do you have to use the same JDK as JRE that you have, because if you didn't have the most updated one, wouldn't there come up with an error?Eh, what?
Last question, if you have used the command line to compile a program, then you know that you need to use javac to compile and java to run it. Well when you use the command javac to compile, then you are using the JDK; and if you use the java command to run it, then you are using JRE. This is just a question to make sure that I have this correct, So correct me if I'm wrong.It's correct.

Downloading and Installing JDK and JSDK

I just got the book instant javaserver pages and it tells me to install JDK 1.2 for Linux and JSDK. Well I'm useing windows 98 and use IE6 mainly for a browser, so should I still download and install JDK for Linux? And the most resent version I could find on this site was 1.1.8.

do a search on the forum top right of this page
ill bet theirs over 10000 posts on it and getting it running
or look to the installation forum itself
as far as dling the right jdk if you have windows you use the windows version of the jdk the download spot
can be a lil tough to find but the jdk is easy to install once you find it and itll make a folder under the c drive

Differences between jdk and jre

can anybody explain the differences between jdk and jvm. and relation between jdk, jre and jvm.
thanks

Hi,
JDK- Java Development Kit contains compiler and other appliction development tools. with this tool you can compile as well as run your application
JRE-Java runtime Environment where Java applications are exceuted .You can only run your application here but you cant develop and compile.
JVM-Java Virtual Machine Its interpretor which interprets and then executes you coded after it is compile ( to byte code) by Java Compiler.

Mismatch of JDK and JRE versions cause screen freeze for applications ?

Hi,
My Java swing application is built on jdk1.3.1_17 in server. It was working fine without any issue when I use Java webstart 1.0.1 to download the client part of the application and JRE 1.3.1_10 to run the application from my local desktop.
For better performance, I upgraded my local desktop to 1.4.2_07 version of JRE and same version of java Web start 2 months before. From that day, I am facing a "Screen freeze" issue in my application. It means, while working on the application, the application screen goes blank or White screen. This issue may come while doing any activity all of a sudden , there is no pattern found.
Is there any reason like incompatibility of lower JDK version and higher JRE/JWS versions could have caused this issue ? Any Idea plz
Thanks in advance
David

I'm using a 15" Macbook Pro with Retina Display. The applications I have are Indesign, Illustrator, and Photoshop. Over a period of time, using these programs will make the screen turn blank. Sometimes, the screen turns a solid color and it just happens to be what ever color I've been using with the Color picker tool.
I don't know for sure what it could be. I tried checking Disk Utility (one problem was solve, but blank screen wasn't fixed).
I have to force reboot only to be faced with another blank screen. I either keep trying or keep cmd+opt+p+r until the screen boots back to normal. (This is probably due to the programs not shutting down properly when the laptop blank screens)

Difference between jdk and jre...

Hi, I installed java (jdk1.6.0_03) and i got 2 folders in my pc with names jre1.6.0_03 and jdk1.6.0_03.
I don't know what are those. And while installing Tomcat5.0 it take the default path for jre1.6.0_03 and worked properly.
pls help me .......

JRE = Java Runtime Environment.
It's basically the implementation for your PC of the Java Virtual Machine (JVM) which is the software emulated processor that Java code runs on.
JDK = Java Development Kit
It's the JRE plus the compiler tools to allow you to write code.
Old versions of Tomcat needed the JDK because JSPs get converted into Java Servlet source code which is compiled into class files and run on the JVM. Newer versions of Tomcat only need the JRE because Tomcat now has its own compiler (implemented in Java) built in.
So since Tomcat's working, I don't think you have much to worry about :-)
Edited by: dcminter on 03-Jun-2008 10:28

Managing JAVA JDK and JRE with Package Management in Solaris 11.1

I want to manage Java JDK & JRE in an Solaris environment using Package Management I'm currently running Solaris 11.1 in a VMWare host. My current latest Java release is JDK1.7.0_07 and JRE1.7.0_07. I want to upgrade to JDK1.7.0_17 & JRE1.7.0_17 using Package Management. I've tried on several occasions to upgrade to latest release of Java but I have not been successful. Each time I try using the Package Management GUI or use command line they appear to be successful but the new release does not show.
What could I be doing wrong?
Thanks

I also learned that the READMEs for the following patches in My Oracle Support also describe the downgrave process:
Patch 18362676: JAVA 6 DOWNGRADE INCORPORATION FOR ORACLE SOLARIS 11.1.15.4.0 AND 11.1.16.5.0
Patch 18362686: JAVA 7 DOWNGRADE INCORPORATION FOR ORACLE SOLARIS 11.1.15.4.0 AND 11.1.16.5.0
-- Alan

Installing JDK and JRE, how?

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