When using Eclipse I get this error:
...re are no JREs installed in the workspace t...
Anyone knows what I have to do? Or which JRE (whatever this is) I need?
Just started this for school so I don't know a lot about Eclipse yet.
(First word is 'Build' in the error)
Edit:
Solved! New version of eclipse + JDK 7
You need to install JDK 7 for Mac. Also please review notes.
After installation the JVM should be located in: /Library/Java/JavaVirtualMachines/ path.
Java 6 is supported by Apple, so try to check path: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home. Suppose, concrete recipe to installation Java 6 on your Mac depends on your hardware and Mac OS version.
JRE is the Java Runtime Environment. Do you have Java installed? It is not part of the OSX package any more.
Related
I am trying to start NetBeans 8.2 on a Macbook Pro and it's not working.
It shows the splash screen, then after a while it shuts down without starting anything.
Running from the command-line I can see this error:
Oct 02, 2017 7:40:28 PM org.netbeans.ProxyURLStreamHandlerFactory register
SEVERE: No way to find original stream handler for jar protocol
java.lang.reflect.InaccessibleObjectException: Unable to make field transient java.net.URLStreamHandler java.net.URL.handler accessible: module java.base does not "opens java.net" to unnamed module #7823a2f9
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:337)
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:281)
at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:175)
at java.base/java.lang.reflect.Field.setAccessible(Field.java:169)
at org.netbeans.ProxyURLStreamHandlerFactory.register(ProxyURLStreamHandlerFactory.java:82)
at org.netbeans.JarClassLoader.<clinit>(JarClassLoader.java:141)
at org.netbeans.MainImpl.execute(MainImpl.java:178)
at org.netbeans.MainImpl.main(MainImpl.java:85)
at org.netbeans.Main.main(Main.java:83)
Looks like Java 9 got bundled with it and it's causing an error. The documentation implies that NetBeans 8.2 uses JDK 8!?
How to use my own java to run NetBeans, or how to get NetBeans to start without this error?
Yes, NetBeans 8.2 does use JDK 1.8, and specifically does not support JDK 1.9.
It's unclear from the OP which version of Java is desired to run with NetBeans, but the version of NetBeans to use is governed by the version of Java to be used:
[1] For Java 8, use Netbeans 8.2. Note that Java 9 is not supported. You can download NetBeans 8.2 bundled with JDK 8u141 for Mac OS here:
http://www.oracle.com/technetwork/articles/javase/jdk-netbeans-jsp-142931.html
Once it has been installed it no specific configuration for Java should be necessary.
[2] For Java 9 you must use a Development Build of NetBeans. That can be downloaded from http://bits.netbeans.org/download/trunk/nightly/latest/ but be sure that Mac OS X is selected from the Platform drop list before clicking Download.
For any version of NetBeans you can specify your own version of Java as follows:
Start NetBeans and select Java Platforms from the Tools menu.
Click the Add Platform... button.
Complete the wizard to locate the version of Java you want to use.
One final point: there is no problem having multiple versions of NetBeans installed and running concurrently using different JDKs, typically NetBeans 8.2 with JDK 1.8 and NetBeans Dev Build with JDK 1.9.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Update:
If NetBeans closes itself down on startup it may have an invalid JDK path. To change the JDK that NetBeans uses:
Locate the file netbeans.conf. It should be in the etc directory under the NetBeans installation directory.
Edit that file in a text editor. Locate the line containing the property netbeans_jdkhome. On my Windows 10 installation it looks like this:
netbeans_jdkhome="C:\Java\jdk1.8.0_121"
Change the value for that property to specify the path to the desired JDK, save the file and restart NetBeans.
As pointed in the comments:
I had tried to set netbeans_jdkhome in /Applications/NetBeans/NetBeans\ 8.2.app/Contents/Resources/NetBeans/etc/netbeans.conf to point to JDK 10, but still it did not work.
I had to install JDK 8, and set netbeans_jdkhome="/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home"
Uninstalling JDK 10 and using JDK 8 worked for me and setting netbeans_jdkhome="/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home" worked quite well.
macOS 10.13.5
JavaJDK 10 installed as "System" JVM
I was able to install NetBeans, but unable to get it to function. Window would open, clicking on "New Project" or "New File" did absolutely nothing.
Was able to get it working (all modules and servers) by going into the configuration file at
/Applications/NetBeans/NetBeans 8.2.app/Contents/Resources/NetBeans/etc/netbeans.conf
and editing the commented out path to JDK at the bottom of the file!
Cheers!
Check Java JDK is installed on Mac, NetBeans 8.2 does use JDK 1.8(Java SE 8)
/usr/libexec/java_home -V
Matching Java Virtual Machines (2):
12.0.1, x86_64: "Java SE 12.0.1" /Library/Java/JavaVirtualMachines/jdk-12.0.1.jdk/Contents/Home
1.8.0_211, x86_64: "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_211.jdk/Contents/Home
if not , just install (no need remove exist JDK)
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
modify /Applications/NetBeans/NetBeans 8.2.app/Contents/Resources/NetBeans/etc/netbeans.conf
netbeans_jdkhome="/Library/Java/JavaVirtualMachines/jdk1.8.0_211.jdk/Contents/Home"
For NetBeans 8.2 JDK 1.8 should be used. If you installed JDK 1.9 or JDK 10.0 to your MacBook, you must uninstall that from your computer.
I had the same issue. I'm using Apache Netbeans 12.0 so I had to change my OpenJDK version from 19.0 to 14.0 and update the path in order to finally work.
No need to uninstall the 19.0, just install the version that works with the Apache that you have and update the path:
netbeans_jdkhome="/Library/Java/JavaVirtualMachines/jdk14.0.jdk/Contents/Home"
I have windows 7 64 bit OS in which I used to work with eclipse Juno Service Release2 version and Oracle JDK 1.7. Now as per my new project requirements I had to change my JDK from Oracle JDK to OpenJDK 1.7. I have un-installed all the other jdk's from my machine and installed OpenJDK1.7(64 bit version). Now I am facing issues with eclipse, I am able to open eclipse IDE but if I perform any operations like opening an existing project or trying to run any programs/project it is getting crashed or getting hanged. I have to end the process from the taskbar and try again and again. Below is the popup screen that I am getting after eclipse crashes.
Can some one tell me how to resolve this issue? I have seen some blogs saying there is a bug with eclise and OpenJDK with Ubuntu and mac OS but no issues reported for windows. So if there is way to fix this issue please let me know (or) please suggest any eclipse version the is compatible with OpenJDK1.7 and windows7.
Here is my version of solution to my issue which was mentioned above.
Installed Oracle JDK1.7 on my system and did not set the path for this. I have updated the eclipse.ini file with (found in eclipse root directory)
-vm
C:/Program Files/Java/jdk1.7.0_79/bin/javaw.exe parameter. so that Eclipse starts with Oracle jdk
and in
Eclipse->Windows->Preferences window
under Java->Installed JREs->Add(under Installed JREs)
added a new entry to point out the OpenJDK1.7 version so that my project uses OpenJDK version. This solved unusual crashing of Eclipse
I am downloading it from here: http://eclipse-cs.sourceforge.net/update/
- Checkstyle version 6.2.0.20150
My eclipse build is: 4.3.2
I have tried downloading it from both the marketplace and the website above, though both ways do not create a "checkstyle" link in the preferences window.
Anyone have any idea what's going on here?
I've also encountered the mentioned problem. But the reason is simple. In the release notes we can read:
Please note that as of this version Java 7 is the minimum runtime
environment supported. This requires you to run Eclipse on a Java 7
(or newer) JVM in order to use this plugin version.
Checkstyle since version 6.2.0 (released in January 2015) needs Java 7 as the minimum runtime environment.
So in order to run Eclipse on a Java 7, you can for example edit eclipse.ini file and add at the beginning something like:
-vm
C:\Program Files\Java\jdk1.7.0_75\bin\javaw.exe
Your exact path to javaw.exe could be different, of course. Alternatively make JDK 7 (or newer) as the default JVM for your system.
I have tried using a clean workspace and a fresh installation of eclipse with nothing but pydev. In all cases, I don't get the pydev configuration options or preferences or views. The plugin install goes through without a hitch and I can see pydev in the installed software also. Anybody else face the same?
PyDev 3 requires Java 7 to function. Unfortunately, the version of Java that is installed on Mac OS X is not a compatible or recent version.
You can check the current version of java on your system by typing java -version in the terminal. In order to run PyDev 3 you should have version 1.7.xxx.
To update Java you will need to install a Java Development Kit (JDK), since just installing the Java Runtime Environment (JRE) will not update the symlink at /usr/bin/java on OS X. If you think that you have installed Java 7, but java -version still gives you a version of 1.6.xxx then you probably installed the JRE instead of the JDK.
I agree with pseudocubic, In my case I just downloaded JDK8 : which by the way includes the JRE8 so pydev worked without trouble in my mac . I had to do this after installing JRE7 but when checking in console java -version it was returning 1.6 version (despite the fact that checking at java icon in system preferences says 1.7 was installed)
Install JDK8 and it's done
I've installed on my iMac (Mac OS X 10.6.6) the Java update which contains the version 1.6.0_24 of the jdk. I think this update has changed the directory structure of the jdk, so now I'm not able to configure it on eclipse.
Before the update my eclipse were linked to this path: /System/Library/Frameworks/JavaVM.Framework/Versions/Current/Home which actually seems wrong.
Now I'm not able to link my eclipse to the jdk. Maybe this is the right path: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home, but 1.6.0.jdk isn't a directory, so I'm not able to choose it in eclipse.
Has anyone experienced this problem? How can I solve it?
For me following jdk link is working fine on Eclipse:
/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
It was my fault. I had also a jdk 1.5 manually installed and the update moved it away.
Probably I made a mistake restoring my jdk-1.5 to its correct location.
To solve my issue I just had to restore the symbolic links /System/Library/Frameworks/JavaVM.Framework/Versions/CurrentJDK, which has to point to /System/Library/Frameworks/JavaVM.Framework/Version.
the follow directory works:
/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home
without "System"
Execute /usr/libexec/java_home on the terminal shell.
It will display a list of all your installed JDKs
On MacOSX 10.10, jdk 1.8 with IntelliJ, I use:
/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/
I was missing CurrentJDK folder as well, but I'm running Mac OS El Capitan.
In El Capitan it's not possible to modify the folder /System/Library/Frameworks/JavaVM.framework/Versions, since it is under the /System folder and SIP is protecting it (you can disable SIP, but I do not recommend), a custom CurrentJDK soft link is not allowed.
I got some legacy software which was searching for CurrentJDK, and there was no way to update the path. To solve it I had to install Java for OS X 2015-001 provided by apple (it's Java 1.6), which fixed the Versions subfolder structure by pointing to the old Java 1.6. Not the best, but it fixed my error!