I did an installation on my Mac of a new Java SDK (1.6 -> 1.7).
On command line it shows the 1.7. And I even changed the Mac's Symlink of CurrentJDK.
But JBoss still shows me a path entry "java.home" pointing to 1.6. And it is not possible to change that via admin website.
Anybody know how to change that?
PS: I start JBoss from Eclipse, which knows also 1.7 now as default.
Open the Launch Configuration for your JBoss server in Eclipse. On the JRE tab you can select the specific Java runtime that it will run in. If the option Project Execution Environment is selected (the default), then you can change it by opening the Project properties, going to the Java Build Path section, then the Libraries tab. Select the JRE System Library entry from the Libraries list then use the **Edit...* button to select your desired Execution Environment.
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I have a set of projects under Netbeans that run on Java 1.7; I am starting one that depends on having Java 1.8. It is a web app, and both Netbeans and the Tomcat server that is configured under Netbeans need to run on 8 for the latter project, but cannot run on 8 for any of the former projects.
I was hoping to create a bat file or something that would allow me to specify the Java version for both Netbeans and the Tomcat that runs under Netbeans.
I found the command line argument for setting the jdkhome for Netbeans; that works for Netbeans. But the JDK configured for the server appears to be a Netbeans setting, and I don't know how to change that at the time that I invoke Netbeans, or with an environment variable (I tried JAVA_HOME, that didn't work).
Does anyone know how/whether this can be done?
Open netbeans IDE and go to Tools-->Servers
Then Select your server (tomcat) and on platform tab select your JDK version and lick on close button.
if Your JAVA platform is not listed in combo box click on Manage Platforms and add new JAVA Paltform.
I'm trying to deploy the app with a .jsp file, which I figured is the reason I get an error because other projects without .jsp files have no problem.
When I try to deploy the app, I get the error : "Cannot get the System Java Compiler. Please use a JDK, not a JRE"
I tried resolving the problem using Mahmoud's solution here : Google app engine deployment : JDK not JRE
But once I have changed the eclipse.ini file, I launch Eclipse and get this error : "Version 1.7.0_80 of the JVM is not suitable for this product. Version 1.8 or greater is required"
You need to install JDK8 or JRE8 for Eclipse to execute and JDK7 for compile this application to build.
As mentioned in the error, JDK7 is not compatible with Eclipse. So you need to set your system JDK to 8 for Eclipse. Alternatively, you could instead modify the environment variables or startup script for Eclipse to reference JDK8 and avoid making this a system wide change.
Although for security purposes, I do recommend using the latest JDK/JRE as the system one for most cases.
Then within Eclipse, set the project JDK to 7.
Click through the following:
Windows -> Preferences -> Java -> Installed JRE
There you can remove the "JRE System Library", then you can add and configure another already installed JRE/JDK for this specific project.
You need the JDK for building which includes a JRE, but for deploying you only need the JRE.
The JDK includes the ability to compile Java source into executable code, where as the JRE can only execute that executable code.
You can download JDK from Oracle's site here: Oracle Java JDK 8
I have two jre in my PC which is running windows 7. When I am running a eclipse project I dont know which version of jre it is calling, so I searched on net for the solution and tried this two things:
In cmd typed java --version and it showed me 1.6.
In control panel, I went it in java control panel and selected java and it showed me 1.7 enabled.
Now, I am confused and how can I change the jre of the system? I want my eclipse project which is running on tomcat to use a specific jre. But I dont know which jre my system is using.
Thanks in advance.
You may check Windows->Preferences->Java->installed to check default JRE that it runs things under.
You may also check property eclipse.vm under the Help->About Eclipse->Installation Details->Configuration.
choose window preferences in eclipse. Select installed jre and add a jre and select an jre you are going to use.
java -version is what a java app on the system will use by default. What IE uses is determined by the extension (Tools->Manage add-ons) you can see the java plugin there.
You can register any jre vesion you want in eclipse using the window->preferences-> installed JRE's
If you are using eclipse, you can set the Java version by going to project->properties->java build path->select the jre version and click on edit.
You can choose the version that you want. Whichever JRE library is displayed in the build path is the version that eclipse is using to compile your code.
Alright so basically, I'm trying to run Eclipse with JavaFX, but then it gives me this error:
You are not running your eclipse instance with Java7 or Java8. The JavaFX tooling is disabled because of this.Make Java7/8 the default system java or adjust your eclipse.ini to pass -vm pointing to your Java7/8 install.
In case you want to turn off this check open your preferences and go to General > Startup and Shutdown and uncheck 'JavaFX Tooling Java Check'
Now I know it isn't pointing to the right SDK, but I have no idea how to change it, since I'm kind of new to this this stuff. I've already downloaded JDK 7.40 as well. I'm also using Ubuntu on a virtual machine, if that even matters anyway. Can anyone help me, I'd appreciate it.
Pre-requirements:
Install Java™ 8.
Install Kepler SR2 (4.3.2) .
The Kepler is still not supporting Java8. What to do?
Open Eclipse
Help > Install New Software…
Enter the following URL into the ‘Work with’ field:
http://download.eclipse.org/eclipse/updates/4.3-P-builds/
Press ‘Enter’
Select category ‘Eclipse Java 8 Support (for Kepler SR2)’
Click ‘Next’
Click ‘Next’
Accept Licence Agreement
Click ‘Finish’
Now jre8 is correctly located.
Now configure JavaFx
Open Eclipse
Help > Install New Software…
Enter the following URL into the ‘Work with’ field:
http://download.eclipse.org/efxclipse/updates-released/0.9.0/site
Press ‘Enter’
Select category ‘Eclipse Java 8 Support (for Kepler SR2)’
Click ‘Next’
Click ‘Next’
Accept Licence Agreement
Click ‘Finish’
It looks like the default java on your system is not java7. What do you get when opening a shell and execute java -version? Solution is to:
A) make java7 the default java
B) start eclipse with -vm
Apparently, you have installed 32bit Eclipse and 64bit JRE/JDK on a 64bit OS. Please use 64bit Eclipse and the problem will be solved. Please make sure JAVA_HOME And JRE_HOME is present in environment variables.
I had the same issue. I tried re-installing Eclipse, but it wouldn't work. I had to completely remove the project and delete all the project files. After that, I re-started eclipse and created the project again. However, this time I made sure the project path included the Java FX library as shown in the screen shot.
Java Build Path
I did this while I was creating the project and then I was able to create the project without any issues. Give this a try.
I want to create a Java application. I'm using Netbeans 7.1 and JDK 1.7.
When I go to File -> New Project, there is no JAVA node in categories pane. Only a standard option for creating java free form project.
What can be done?
Go to Tools-> Java Platforms, and see if your JDK has been registered there. It could be that you have only the JRE installed (not likely unless you downloaded the OS-Independent zip), or your PATH variable does not include the JDK's bin directory. In either case, just type 'javac' into the command prompt (Start->Run->'cmd.exe'). If you get an error, but are sure you have the JDK, check Oracle's website on configuring the PATH variable.