[HELP] Can WLS 8.1 run on JRE (instead of JDK)?

Hello everybody,
I dimly remember reading not long ago that WLS must be run from JDK's java
not JRE's for full functionality, but now I can not find that explicitily
stated anywhere.
Platform is WLS 8.1 sp2 on solaris 8, .sh installer (full version with
internal JDK).
On install, the JAVA_HOME in the startup script is set to the WLS's own
internal JDK:
JAVA_HOME="/home/bea81/jdk141_03"
and the java startup command in the script refers to the java in that
internal JDK
${JAVA_HOME}/bin/java ... weblogic.Server
Now I am faced with a troublesome WLS install where the java startup command
has been customized to the java in the JRE within the internal JDK:
${JAVA_HOME}/jre/bin/java ... weblogic.Server
My question is:
will WLS work properly when started from JRE that way? Or shallI expect some
malfunction as a result?
TIA
Paola R.

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Have you checked the stack info on the readme of the JDK?
Try setting via:
$ulimit -s 2048
$./startWebLogic.sh
HTH
Michael Young <[email protected]> wrote in message news:<[email protected]>...
hi.
We don't certify this platform, which means either we didn't test it or the
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http://edocs.bea.com/wls/platforms/index.html#linux
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[SOLVED] Why does my JAVA_HOME point to jre instead of jdk?

I am having a strange phanomenon.
I have jdk7-openjdk installed, but I still have
% echo $JAVA_HOME
/usr/lib/jvm/java-7-openjdk/jre
This is only with my current user. When I try root or a freshly created user, I correctly get
% echo $JAVA_HOME
/usr/lib/jvm/java-7-openjdk
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Maybe someone here has any idea how to find out more.
Last edited by cbuehler (2013-12-22 10:20:30)

As far as I understand, the order is not important in this case, because jre.sh only overrides JAVA_HOME if it is not set before.
I also like to avoid making configuration changes when it looks like the default config should work fine.
But brebs' reply inspired me to run 'sh -x /etc/profile', which finally shed light into my issue:
+++ . /home/cbuehler/Siemens/Teamcenter10.1/Visualization/bin/visviewwebinit /home/cbuehler/Siemens/Teamcenter10.1/Visualization
++++ '[' X_ = X_True ']'
++++ '[' -n /home/cbuehler/Siemens/Teamcenter10.1/Visualization ']'
++++ export EAI_INSTALL=/home/cbuehler/Siemens/Teamcenter10.1/Visualization
++++ EAI_INSTALL=/home/cbuehler/Siemens/Teamcenter10.1/Visualization
++++ '[' -d /usr/lib/jvm/java-7-openjdk/jre -o -h /usr/lib/jvm/java-7-openjdk/jre ']'
++++ export JAVA_HOME=/usr/lib/jvm/java-7-openjdk/jre
++++ JAVA_HOME=/usr/lib/jvm/java-7-openjdk/jre
I have Teamcenter Visualization installed in my home directory. And this changes my JAVA_HOME in /home/cbuehler/Siemens/Teamcenter10.1/Visualization/bin/visviewwebinit:
# If JAVA_HOME points to the top level java directory, reset it to point to the JRE directory.
if [ -d $JAVA_HOME/jre -o -h $JAVA_HOME/jre ]; then
export JAVA_HOME=$JAVA_HOME/jre
fi
I commented this part out and now everything works fine.
Thank you very much for your help.

How can WLS use JSP pages in a Web Application witth just a JRE [Web Application, WAR, JSP, weblogic.jsp.pageCheckSeconds and JRE]

 How can WLS use JSP pages in a Web Application (either a .war file or a war directory structure) without a java compiler?
 I suspect either the JSP specification is flawed (i.e. it doesn't take account of servers using just a JRE), or BEA's implementation is broken.
 Production servers do not have a JDK installed. They only have a JRE. Therfore a java compiler is not present on the machine that the Web Application is deployed onto.
 On the development machine, when the server is requested to load the JSP it creates a tmpwar directory within the Web Application directory structure. This is then included in the resultant .war file thus:
 D:\war>jar -tf gmi.war
 META-INF/
 META-INF/MANIFEST.MF
 gmiService.jsp
 WEB-INF/
 WEB-INF/classes/
 WEB-INF/classes/com/
 WEB-INF/classes/com/bt/
 WEB-INF/classes/com/bt/gmi/
 WEB-INF/classes/com/bt/gmi/gmiService.class
 WEB-INF/getList.xsl
 WEB-INF/getListByConnection.xsl
 WEB-INF/getListByDistrict.xsl
 WEB-INF/getListByDistrictConnection.xsl
 WEB-INF/lib/
 WEB-INF/source/
 WEB-INF/source/build.bat
 WEB-INF/source/gmiService.java
 WEB-INF/web.xml
 WEB-INF/weblogic.xml
 tmpwar/
 tmpwar/jsp_servlet/
 tmpwar/jsp_servlet/_gmiservice.class
 tmpwar/jsp_servlet/_gmiservice.java
 When deployed on the production server with the web.xml file set to use the following values (note XML stripped):
 weblogic.jsp.pageCheckSeconds
 -1
 weblogic.jsp.precompile
 false
 weblogic.jsp.compileCommand
 javac
 weblogic.jsp.verbose
 true
 weblogic.jsp.packagePrefix
 jsp_servlet
 weblogic.jsp.keepgenerated
 false
 And in the weblogic.properties file:
 weblogic.httpd.webApp.gmi=war/gmi
 I've also tried with the .war file, but that insists on creating another tmpwar directory outside of the .war file.
 Then, although I have set pageCheckSeconds to -1 (don't check and don't recompile) ter production server still attempts to recompile the JSP's:
 Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: init
 Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param verbose initialized to: true
 Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param packagePrefix initialized to: jsp_servlet
 Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param compileCommand initialized to: javac
 Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param srcCompiler initialized to weblogic.jspc
 Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param superclass initialized to null
 Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param workingDir initialized to: /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war
 Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param pageCheckSeconds initialized to: -1
 Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: initialization complete
 Mon Sep 25 11:40:12 BST 2000: <WebAppServletContext-gmi> Generated java file: /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war/jsp_servlet/gmiService.java
 Mon Sep 25 11:40:14 BST 2000:<E> <WebAppServletContext-gmi> Compilation of /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war/jsp_servlet/gmiService.java failed: Exception in thread "main" java.lang.NoClassDefFoundError: sun/tools/javac/Main
 java.io.IOException: Compiler failed executable.exec([Ljava.lang.String;[javac, -classpath, /opt/Solaris_JRE_1.2.1_04/lib/rt.jar:/opt/Solaris_JRE_1.2.1_04/lib/i18n.jar:/opt/Solaris_JRE_1.2.1_04/classes:/var/wls/5.1/weblogic/lib/weblogic510sp4boot.jar:/var/wls/5.1/weblogic/classes/boot:/var/wls/5.1/weblogic/eval/cloudscape/lib/cloudscape.jar:/var/wls/5.1/weblogic/lib/wleorb.jar:/var/wls/5.1/weblogic/lib/wlepool.jar:/var/wls/5.1/weblogic/lib/weblogic510sp4.jar:/var/wls/5.1/weblogic/license:/var/wls/5.1/weblogic/classes:/var/wls/5.1/weblogic/lib/weblogicaux.jar:/opt/wls-servers/gmiServer/weblogic/gmiServer/serverclasses:/opt/wls-servers/gmiServer/weblogic/lotusxsl.jar:/opt/wls-servers/gmiServer/weblogic/xerces.jar:/opt/wls-servers/gmiServer/weblogic/logging.jar::/opt/wls-servers/gmiServer/weblogic/war/gmi/WEB-INF/classes:/opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war, -d, /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war, /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war/jsp_servlet/gmiService.java])
 at java.lang.Throwable.fillInStackTrace(Native Method)
 at java.lang.Throwable.fillInStackTrace(Compiled Code)
 at java.lang.Throwable.<init>(Compiled Code)
 at java.lang.Exception.<init>(Compiled Code)
 at java.io.IOException.<init>(Compiled Code)
 at weblogic.utils.compiler.CompilerInvoker.compileMaybeExit(Compiled Code)
 at weblogic.utils.compiler.CompilerInvoker.compile(CompilerInvoker.java:200)
 at weblogic.servlet.jsp.JspStub.compilePage(Compiled Code)
 at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:173)
 at weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.java:187)
 at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:118)
 at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:142)
 at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:744)
 at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:692)
 at weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContextManager.java:251)
 at weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:363)
 at weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:263)
 at weblogic.kernel.ExecuteThread.run(Compiled Code)


The default Java compiler from sun lives in the tools.jar that comes with
 the JDK. Just add that to your set of JARs which are deployed in production
 and you should be fine. No need to install the full JDK - just make the
 tools.jar available to WebLogic.
 Regards
 James
 James Strachan
 =============
 email: [email protected]
 web: http://www.metastuff.com
 "Martin Webb" <[email protected]> wrote in message
 news:[email protected]...
 >
 > How can WLS use JSP pages in a Web Application (either a .war file or a
 war directory structure) without a java compiler?
 >
 > I suspect either the JSP specification is flawed (i.e. it doesn't take
 account of servers using just a JRE), or BEA's implementation is broken.
 >
 > Production servers do not have a JDK installed. They only have a JRE.
 Therfore a java compiler is not present on the machine that the Web
 Application is deployed onto.
 >
 > On the development machine, when the server is requested to load the JSP
 it creates a tmpwar directory within the Web Application directory
 structure. This is then included in the resultant .war file thus:
 >
 > D:\war>jar -tf gmi.war
 > META-INF/
 > META-INF/MANIFEST.MF
 > gmiService.jsp
 > WEB-INF/
 > WEB-INF/classes/
 > WEB-INF/classes/com/
 > WEB-INF/classes/com/bt/
 > WEB-INF/classes/com/bt/gmi/
 > WEB-INF/classes/com/bt/gmi/gmiService.class
 > WEB-INF/getList.xsl
 > WEB-INF/getListByConnection.xsl
 > WEB-INF/getListByDistrict.xsl
 > WEB-INF/getListByDistrictConnection.xsl
 > WEB-INF/lib/
 > WEB-INF/source/
 > WEB-INF/source/build.bat
 > WEB-INF/source/gmiService.java
 > WEB-INF/web.xml
 > WEB-INF/weblogic.xml
 > tmpwar/
 > tmpwar/jsp_servlet/
 > tmpwar/jsp_servlet/_gmiservice.class
 > tmpwar/jsp_servlet/_gmiservice.java
 >
 > When deployed on the production server with the web.xml file set to use
 the following values (note XML stripped):
 >
 > weblogic.jsp.pageCheckSeconds
 > -1
 >
 > weblogic.jsp.precompile
 > false
 >
 > weblogic.jsp.compileCommand
 > javac
 >
 > weblogic.jsp.verbose
 > true
 >
 > weblogic.jsp.packagePrefix
 > jsp_servlet
 >
 > weblogic.jsp.keepgenerated
 > false
 >
 >
 > And in the weblogic.properties file:
 >
 > weblogic.httpd.webApp.gmi=war/gmi
 >
 > I've also tried with the .war file, but that insists on creating another
 tmpwar directory outside of the .war file.
 >
 >
 > Then, although I have set pageCheckSeconds to -1 (don't check and don't
 recompile) ter production server still attempts to recompile the JSP's:
 >
 >
 > Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: init
 > Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param
 verbose initialized to: true
 > Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param
 packagePrefix initialized to: jsp_servlet
 > Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param
 compileCommand initialized to: javac
 > Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param
 srcCompiler initialized to weblogic.jspc
 > Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param
 superclass initialized to null
 > Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param
 workingDir initialized to:
 /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war
 > Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp: param
 pageCheckSeconds initialized to: -1
 > Mon Sep 25 11:40:11 BST 2000: <WebAppServletContext-gmi> *.jsp:
 initialization complete
 > Mon Sep 25 11:40:12 BST 2000: <WebAppServletContext-gmi> Generated java
 file:
 /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war/jsp_servlet/gmiService.
 java
 > Mon Sep 25 11:40:14 BST 2000:<E> <WebAppServletContext-gmi> Compilation of
 /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war/jsp_servlet/gmiService.
 java failed: Exception in thread "main" java.lang.NoClassDefFoundError:
 sun/tools/javac/Main
 >
 > java.io.IOException: Compiler failed
 executable.exec([Ljava.lang.String;[javac, -classpath,
 /opt/Solaris_JRE_1.2.1_04/lib/rt.jar:/opt/Solaris_JRE_1.2.1_04/lib/i18n.jar:
 /opt/Solaris_JRE_1.2.1_04/classes:/var/wls/5.1/weblogic/lib/weblogic510sp4bo
 ot.jar:/var/wls/5.1/weblogic/classes/boot:/var/wls/5.1/weblogic/eval/cloudsc
 ape/lib/cloudscape.jar:/var/wls/5.1/weblogic/lib/wleorb.jar:/var/wls/5.1/web
 logic/lib/wlepool.jar:/var/wls/5.1/weblogic/lib/weblogic510sp4.jar:/var/wls/
 5.1/weblogic/license:/var/wls/5.1/weblogic/classes:/var/wls/5.1/weblogic/lib
 /weblogicaux.jar:/opt/wls-servers/gmiServer/weblogic/gmiServer/serverclasses
 :/opt/wls-servers/gmiServer/weblogic/lotusxsl.jar:/opt/wls-servers/gmiServer
 /weblogic/xerces.jar:/opt/wls-servers/gmiServer/weblogic/logging.jar::/opt/w
 ls-servers/gmiServer/weblogic/war/gmi/WEB-INF/classes:/opt/wls-servers/gmiSe
 rver/weblogic/war/gmi/_tmp_war, -d,
 /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war,
 /opt/wls-servers/gmiServer/weblogic/war/gmi/_tmp_war/jsp_servlet/gmiService.
 java])
 > at java.lang.Throwable.fillInStackTrace(Native Method)
 > at java.lang.Throwable.fillInStackTrace(Compiled Code)
 > at java.lang.Throwable.<init>(Compiled Code)
 > at java.lang.Exception.<init>(Compiled Code)
 > at java.io.IOException.<init>(Compiled Code)
 > at
 weblogic.utils.compiler.CompilerInvoker.compileMaybeExit(Compiled Code)
 > at
 weblogic.utils.compiler.CompilerInvoker.compile(CompilerInvoker.java:200)
 > at weblogic.servlet.jsp.JspStub.compilePage(Compiled Code)
 > at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:173)
 > at
 weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.java:18
 7)
 > at
 weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
 :118)
 > at
 weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
 :142)
 > at
 weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
 l.java:744)
 > at
 weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImp
 l.java:692)
 > at
 weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContext
 Manager.java:251)
 > at
 weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:363)
 > at
 weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:263)
 > at weblogic.kernel.ExecuteThread.run(Compiled Code)
 >
 >
 >

I am working on a MacBook Pro (13-inch, Mid 2009) with boot camp running Windows 7 pro 64-bit. Windows crashes quite often now-a-days and I need to get this fixed. I heard that updating boot camp can help. Currently I am running Version 3.0.4 (322).

I need to know which update(s) I can apply to help stabalize the system.

Typing the body of the thread message in the title, huh? -)
I am working on a MacBook Pro (13-inch, Mid 2009) with boot camp running Windows 7 pro 64-bit. Windows crashes quite often now-a-days and I need to get this fixed. I heard that updating boot camp can help. Currently I am running Version 3.0.4 (322).
Only Apple could hamstring and tie Mac OS to Windows. There isn't any other than whether you can download the drivers into Windows (you can) but Apple puts a block on the installer setup even if your mac does not support it.
Windows 7 needs at least Boot Camp 3.1 and 3.3 is what you should already have. And you are not getting security updates if you don't have at least 10.6.8 as was pointed out. --- you arent using Software Update as you should. And you should backup and clone Mac (and Windows) as well.
You need Mountain Lion to use Boot Camp 5.x which supports Windows 7 & 8 and 64-bit.
I would upgrade to Lion if you can realizing that Rosetta and PowerPC are no longer supported though.
Mac 101: Using Windows on your Mac via Boot Camp
https://support.apple.com/kb/HT1461
http://www.apple.com/support/bootcamp/
Helpful Apple Support Resources (Forum Overview)
Boot Camp Support
Boot Camp Manuals
Boot Camp 5.0 Drivers
http://support.apple.com/kb/DL1638
Frequently asked question
http://support.apple.com/kb/HT4818
http://manuals.info.apple.com/en_US/boot_camp_install-setup_10.7.pdf
http://manuals.info.apple.com/en/Boot_Camp_Install-Setup_10.6.pdf
http://manuals.info.apple.com/en/Boot_Camp_Install-Setup_10.6.pdfcreate a Windows support software (drivers) CD or USB storage media
http://support.apple.com/kb/HT4407
The Boot Camp Assistant can burn Boot Camp software (drivers) to a DVD or copy it to a USB storage device, such as a flash drive or hard drive. These are the only media you can use to install Boot Camp software.
https://support.apple.com/kb/HT4569
http://manuals.info.apple.com/en_US/boot_camp_install-setup_10.8.pdf
Instructions for all features and settings.
Boot Camp 4.0 FAQ Get answers to commonly asked Boot Camp questions.
Windows 7 FAQ Answers to commonly asked Windows 7 questions.
http://www.apple.com/support/bootcamp/
Is there a download of the Boot Camp 5 Support Software if I'm not using OS X Mountain Lion v10.8.3?
Yes, you can download the Boot Camp 5 Support Software here.
http://support.apple.com/kb/DL1638
How do I use the Boot Camp 5 Support Software I downloaded from the web page?
The download file is a .zip file. Double click it to uncompress it.
Double-click the Boot Camp disk image.
Copy the Boot Camp and "$WinPEDriver$" folders to the root level of a USB flash drive or hard drive that is formatted with the FAT file system (see question below for steps on how to format).
Install Windows, leaving the flash or hard drive attached to the USB port of your Mac.
Installation of the drivers can take a few minutes. Don't interrupt the installation process. A completion dialog box will appear when everything is installed. Click Finish when the dialog appears.
When your system restarts your Windows 8 installation is done.
Note: If the flash drive or hard drive was not attached when you installed Windows and was inserted after restarting into Windows 8, double-click the Boot Camp folder, then locate and double click the "setup.exe" file to start the installation of the Boot Camp 5 Support Software.
How do I format USB media to the FAT file system?
Use Disk Utility to format a disk to use with a Windows computer. Here's how:
Important: Formatting a disk erases all the files on it. Copy any files you want to save to another disk before formatting the disk.
Open Disk Utility.
Select the disk you want to format for use with Windows computers.
Click Erase, and choose one of the following from the Format pop-up menu:
If the size of the disk is 32 GB or less, choose MS-DOS (FAT).
If the size of the disk is over 32 GB, choose ExFAT.
Type a name for the disk. The maximum length is 11 characters.
Click the Erase button and then click Erase again.
Which versions of Windows are supported with Boot Camp 5?
64-bit versions of Windows 8 and Windows 7 are supported using the Boot Camp 5 Support Software. If you need to use a 32-bit version, you need to use Boot Camp 4 Support Software, and you must use Windows 7. 32-bit versions of Windows 8 are not supported via Boot Camp. For a complete list of Windows OS support, click here.

I'm having problems downloding Itunes - I have tried 6 times on different dates and I can get it to run - please help

I'm having problems downloding Itunes - I have tried 6 times on different dates and I can get it to run - please help

The master password protects saved passwords in Thunderbird and has nothing to do with connecting to your providers server. You need to work with your email provider if you have forgotten your email password. Go to their email help site and look for a link to reset your password.
If you are truly working with a forgotten master password this article tells you how to remove it.
https://support.mozilla.org/en-US/kb/master-password

Running multiple JREs in browsers

Hi,
I have two JREs installed on my Windows 2000 machine (JRE 1.3.x and JRE 1.4.x). There are several Java applets running in a web browser but some of them need to have a specific JRE version and don't run with another. So my question is: can I use both JREs within the same browser (Mozilla 1.5) or can I somehow configure the browsers so that e.g. IE runs with JRE 1.3.x and Mozilla with JRE 1.4.x?
Thanks a lot for any help... Robert

This may help you. I have the same issue at work. We have one program that requires a different version of JRE than other programs. The way I get around this is a little inconvenient but works. In Internet Options Advanced tab, uncheck "use Java 2 v1.4.2.03 for <applet> (requires restart)" and the program requiring the older version should run fine. (It does for us). The inconvenience comes with rechecking the box to run the newer program. I'm still trying to find a better fix. Just thought this might help in the mean time.

Eclipse running under JRE

Hello gurus...
I have seen eclipse working under JRE only. But how it can compile java files to class files if there is no javac.
any clues???

phoenix-supratim wrote:
But could you be more specific. Exactly which compiler you are talking about.The eclipse compiler. I don't know how to be more specific than that. They have created their own compiler so you don't need a JDK to use it (and possibly for other reasons).
Is there any other compiler available to compile java files to class files.Well, I guess OpenJDK have their own compiler too.
If that is the case then for running jar files it needs a JVM. And if a JVM is already there in eclipse it should'nt have asked for a JRE in the first place.[Eclipse atleast need a jre to run]I didn't say Eclipse has its own JVM. I said it has its own compiler. It requires a JRE because JRE contains the JVM that is used to run any Java programs.
Another thing I would like to know. I have added MAVEN plugin in my eclipse. I noticed that when eclipse working under JRE only, MAVEN gives warning that a jdk JVM should be there to successfully run MAVEN. Beacause it needs some jar files from JDK. Exactly which jar files does MAVEN need from JDK and which way those jar files are different from JRE jar files.JDK has additional libraries that the JRE doesn't have.
Because all the jar files JDK have to initialize and run a JVM are all there in JRE.JDK includes the JRE, which includes the JVM. And the JDK does have things that the JRE doesn't (like the compiler).

My Powerbook will not power up, but I can hear the fan running...

Please help!! My Powerbook will not power up, but I can hear the fan running when I press the power button to attempt to power it up. I just received a new power adapter because it wasn't working properly and it was doing this before and then it worked for a week and now it will not power up at all. It just starts the fan but nothing else turns on. When I plug the adapter, with the battery still connected, it will look as if it is charging but then the light on the plug turns from green to orange then off and doesn't power up at all. If I take the battery out and plug in the adapter, the light stays on but it does not power up except for the fan noise. Does anyone have any suggestions? I also followed the two articles listed online in regards to resetting the power setting and the command + alt + P + R as well. Nothing works. Thanks in advance.....

Same here. If I start up with the power adapter attached, it starts up fine. If I try to start up from battery only, the fan comes on, the sleep light comes on but nothing else happens. I tried letting it sit that way for about 15 minutes and nothing changed. I tried attaching the power cord while in this mode and nothing changed. I tried the PMU reset a couple of times but nothing helps.
This computer is just over 1 year old and I have not had any problems with the power cord (3rd party), the battery, or any problem like this before. It started after a proper shutdown last night and attempt to start without the power cord this afternoon.
Any answers to this yet? I think I'll call on this and report any success to this discussion.
15" PowerBook G4 Mac OS X (10.4.8) 1 GB DDR2 SDRAM, 100 GB HD

I have a Macbook pro 2009 with Snow Leopard. Which system can I install without running into complicated problems which I will not be able to solveby myself? (Mountain Lion, Mavericks, Yosemite?)

I have a Macbook pro 2009 with Snow Leopard. Which system can I install without running into complicated problems which I will not be able to solve by myself- a person with limited problem solving abilities. (Mountain Lion, Mavericks, Yosemite?)

It will make it easier to help you w/ your problem to know the size and RAM installed.
"Yesterday I couldn't update the maps on my Garmin because it said the OS I had wouldn't work"
What OS will your Garmin work with? Funny there was someone else that did that and upgraded to Yosemite and regretted it.
I'd say Lion if your Garmin is compatible.
Both Lion and Mountain Lion are downloadable from the Apple Store:
http://store.apple.com/us/product/D6106Z/A/os-x-lion
http://store.apple.com/us/product/D6377Z/A/os-x-mountain-lion
The OSs will get more resource hungry the higher you go.

TS1587 I tried everything, except for reinstalling the SO-DIMM memory modules. Still, my iMac will not wake up. Turning it on you can hear the fan run, but the display stays dark. Any ideas what to do? Thanks Maja

My iMac won't start up, or wake from sleep. I've tried everything, except for reinstalling the SO-DIMM memory modules. Still, my iMac will not wake up. Turning it on, you can hear the fan run, but the display stays dark. Any ideas what to do? Thanks!

Mac doesn't boot
Can you hear the fans and hard drive and see the white boot screen? Flashing question mark? The circle just runs and nothing happens? Only black screen and nothing else? These can be very helpful to diagnose the source of the problem. [1]
Flashing question mark [2]: This is usually a sign of a failed hard drive. This indicates that boot up volume can not be found.
Black screen: This is usually a sign of a failed logic board. There is no single reason for this and this may be caused by failed GPU, screen, CPU or RAM.
Circle of death/no circle/blue screen: This is usually a sign of a hard drive failure. This may NOT be a dead hard drive, just broken permissions or something
Gray screen/Apple logo/spinning gear or globe/prohibitory sign/folder with flashing question mark [3]: This could be a sign of faulty hardware but more likely a software issue, i.e. broken permissions, failed software update, etc.
[edit]
What to do
First, hold down the option key (also known as the alt key) just after you've pressed the power button. This should show all the available options to boot from, so if you have Windows installed through Bootcamp or a disk in your SuperDrive, you should be able to see them along with your OS X drive/partition. Select the OS X partition with arrow keys and press enter. Startup key combinations
If that doesn't help continue doing the steps from below:
1. SMC reset [4]. Shut down and unplug all cables including power cord for at least 30 seconds and then plug in power cord and keyboard/mouse.
2. PRAM reset [5]. Hold down option, command, P and R while booting. Start it when you hear the sound and don't let go before it reboots.
3. Safe boot [6]. Hold down shift while booting to boot into safe mode. If this works, open Disk Utility from Utilities and repair your permissions and verify the disk
4. Hardware test [7]. Insert the install disk (disk 1 in Mac which shipped with OS X 10.5.4 or earlier, disk 2 if shipped with OS X 10.5.5 or newer) and hold down "D" before the grey boot screen opens. Follow on screen instructions
5. Boot from install disk. Boot from the disk that came with your Mac. Hold C while booting. Select Disk Utility from top bar and repair permissions and verify the disk. Reboot normally and see if it works now.
6. Boot from another Mac (Firewire target disk mode). Connect the machines with a Firewire cable. Power on your Mac and press T. Select the other Mac's hard drive. Download the current OS X combo update. Run the combo update installer and select the drive that won't boot as the destination.
7. "Repair" OS X. Boot from the install disk as in point 5. and reinstall OS X. This should NOT erase any data, just replaces the system files which may have caused your booting problem. Now install the latest combo update for OS X and repair permissions on your drive with Disk Utility.
7.1. Install OS X into an external hard drive and then boot from it [8] and try to copy your data from the hard drive before proceeding. If you have done a backup recently, you don't have to do this.
8. Restore OS X from Time Machine backup. Boot from the disk that came with your Mac and choose the Time Machine restore option. This step will lose any changes made since your last backup but the system and your data will be put back to exactly as it was on that date.
8.1 Reinstall OS X. Boot from the install disk as in point 5. and select Disk Utility again. Now erase the whole hard drive and install OS X again. If you had a Time Machine backup and step 7 worked you don't have to do this.

I'm new to GB and I'm trying to record solo vocal with a backing track. I can get the track running OK but I can't seem to record. I think when I press record the backing track mutes and I need it running.. Thanks in advance!

I'm new to GB and I'm trying to record solo vocal with a backing track. I can get the track running OK but I can't seem to record. I think when I press record the backing track mutes and I need it running.. Thanks in advance!

guess what it says java file. So yes i'm sure. Sarcasm. Not the best way to encourage a total stranger to help you. Then there's
Sorry if i wasn't more clear but was that response needed?No it wasn't needed, but I'm not the one asking for help so I have the luxury of not worrying too much about it. It's extremely frustrating trying to drag relevant information out of someone, and makes one less inclined to bother.
Anyways, there's still nothing in this thread that actually explicitly says "there is a file called VolcanoApp.java in the directory where I'm running javac from" and I really can't be bothered banging my head against the wall any longer. You've made a silly mistake, or a false assumption. We all do it from time to time. My advice is, take a break, go for a walk and re-visit this in a while. You'll probably spot the mistake right away.

TS1702 Hi, I getting a "playback error message" on youtube App. I tried to reinstall the app and to reset and restore the device and all these things didn't help.can you please help me

Hi, I getting a "playback error message" on youtube App. I tried to reinstall the app and to reset and restore the device and all these things didn't help.can you please help me

That's a peculiar one to get in the context of a QuickTime uninstall.
Which particular version of QuickTime for Windows are you currently running? (7.7.5, 7.7.4, something earlier?)

My Earth and Beyond game ran with XP, can't install or run it on 8.1... need patch or driver ???

I have an older PC with XP, my game Earth & Beyond ran fine... this new PC with 8.1 can't install an run. There must be a service pack or patch or driver....

mckaysr wrote:
I have an older PC with XP, my game Earth & Beyond ran fine... this new PC with 8.1 can't install an run. There must be a service pack or patch or driver....
You found and hit the limitation of old software are unable to install on newer O/S. This is software limitation nothing Win8 can do to help you install a XP game or Program on Win8.
I am a Volunteer to help others on here-not a HP employee.
Replies aren't online 24/7 because of Time Zone differences.
Remember in this Day and Age of Computing the Internet is Knowledge at your fingertips if you choose understand it. -2015-

How can I install and run lookout 6.1 on windows server 2008 64-bit without errors?

How can I install and run lookout 6.1 on windows server 2008 64-bit without any errors?
I was unable to start the lookout applcation after I install the lookout 6.1 on windows server 2008 64-bit.
(error code: 0xC0000142). Please help!
Thanks

This will pobably do http://joule.ni.com/nidu/cds/view/p/id/1051/lang/en but the major issue is that you should concentrate and read the instructions carefully. My two cents.
Dieet
Afvallen

[HELP] Can WLS 8.1 run on JRE (instead of JDK)?

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