After I update my PC from Windows 8.1 to Windows 10, my Eclipse Java SE IDE and EE IDE cannot be opened anymore. I tried to set it to Windows 8 compatible but it didn't work.
What I did to fix it are as following:
I downloaded the latest version of Eclipse and extract it.
Rename the previous one (e.g., rename c://program files/eclipse to c://program files/eclipse_old
Cope new Eclipse to the previous directory (e.g., c://program files/eclipse)
Then, the Eclipse can be run again. Be careful to select the right version of eclipse (32bit vs. 64bit).
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.
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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 installed java 8 ,Eclipse Kepler and Python34.Now i have installed Pydev through EClipse>>Help>>install new software but it is not showing in File >>New Project or Windows>> Open Perspective. I have installed Pydev many time but it's not showing and i have seen also many of stack over flow but still iy's not working.
please crosecheck that Eclipse take Java 8 version only .because pydev needs Java 8 version. Even if you installed java 8 in your system. But check that the Eclipse took Java 8 version nothing else.If not then uninstall the eclipse and again install it so that it will take system java 8 version.
After this if still issue persist, then try with Eclipse Luna. I am facing the same issues.Now it is working for me.
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
Downloaded eclipse Europa on laptop as it has 2GB RAM and latest eclipse makes it run slow.
From http://archive.eclipse.org/technology/epp/downloads/release/europa/winter/eclipse-java-europa-winter-win32.zip
Unzipped, clicked eclipse.exe See this error:
I have Java 7 installed
Can I get java 5? un install Java 7 first? Any easy way to keep both and run old eclipse too?
I know I have java 7 as this works http://java.com/en/download/installed.jsp ....
Verifying Java Version
A newer version of Java is available
Please click the download button to get the recommended Java for your
computer. Your Java version: Version 7 Update 40
sys vars
java_home=C:\apps\j\j\j1645
Path=C:\apps\j\j\j1645\bin;C:\data\apps\j\maven\bin;C:\Program...
Update
ty guy - copy jre means copy folder called jre that has bin and lib to folder that has eclipse.exe . worked
Copy the jre folder of your java 5 installation into the europa eclipse folder. It will be 'endorsed' and used by the eclipse launcher. Than, feel free to install any other java version on your system. It will not interfere with your eclipse installation.
I just upgraded my version of Eclipse on Ubuntu, and now whenever I open a Python file it opens in an external window, and the existing Python files I have open in Eclipse say "Could not open the editor: No editor descriptor for id org.python.pydev.editor.PythonEditor".
I tried uninstalling and reinstalling both Eclipse and the PyDev plugin, and it didn't fix the problem.
From my experience (~8 years) with eclipse don't do in place updates. Always install a fresh version with a new workspace. And re-checkout projects from SCM.
Check first whether all required plugins still work before switching to the new environment.
Make sure your Java version is correct (what your version of PyDev is expecting).
After I updated PyDev (5 min ago) I had the exact same error message displayed in the tabs where I once had python source files opened (No editor descriptor for id).
I updated my Java version from 1.7 to 1.8 with:
sudo apt-add-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer
Then to check your version, run:
java -version
You should see something like:
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) Server VM (build 25.91-b14, mixed mode)
Re-opened eclipse, and the PyDev plugin is working. Yay!
Actually, when you install Eclipse new version then new plugins are installed which lead to change in ubuntu libraries and installing again will not take effect until you install new plugin which is supported
I had same issue, when I updgradet PyDev with newest version 3.*. It needs java 1.7, but I have only java 1.6, so it does not work at all. I uninstalled it and set eclipse to old updating point, but nothing helped. Advise is to use PyDev versio 2.82. You can not find it from update repositories.
Only way is to download old version 2.8.2 from PyDev site, unzip that zip file to eclipse's drop in directory, in linux it is /usr/lib/eclipse/dropins. After unzipping you should see there features- and plugins-directories. And after some starting of eclipse, I could see PyDev again. At first restart of eclipse I could not see PyDev and tried "Check updates" and "Install new software" settind url to /usr/lib/eclipse/dropins but they did not see any software there. But trying to restart few times, old PyDevc 2.8.2 was in eclipse again. Huh.
I disabled PyDev from eclipses "check uopdates" so I don't make that error again, this machine will not get java 1.7 (Ubuntu 10.04 LTS).
I now ran into exactly the same problem when updating to PyDev 5.0 and its definitely an issue that the user is not warned that the program might break on update. However, the simplest solution is to install the new required Java and JRE version, for PyDev 5.0 that's Java 8 and OpenJDK 1.8 (on Linux), and tell Eclipse to actually use the new JRE in the eclipse.ini file, by pointing it to the right path. See https://wiki.eclipse.org/Eclipse.ini#Specifying_the_JVM on how to achieve this.