How can i install a actual jdk on my Synology DS213 air,
I have installed IPKG,JAMVM and JIKE that i can start a RMI-Server on my NAS but when i start the java I get this error:
DiskStation> jikes -cp /opt/lib/rt.jar RunRmiRegistry.java
Found 1 semantic error compiling "RunRmiRegistry.java":
42. for (String string : list) {
^
Semantic Error: Enhanced for loops (also known as foreach loops) are only supported for `-source 1.5' or greater.
On my PC i have installes jdk 8.45.
The Synology DS213 Air can not be get a newer Java then Java 5 so its not impossible to install the actual Java
Related
i have tomcat working fine, the error is not even about the port, which i know how to change, is this some sort of java version compatibility problem?
i'm a student so i don't know much
here's the output
$ asadmin start-domain domain1
Exception in thread "main" java.lang.NullPointerException
at com.sun.enterprise.module.common_impl.AbstractModulesRegistryImpl.initializeServiceLocator(AbstractModulesRegistryImpl.java:152)
at com.sun.enterprise.module.common_impl.AbstractModulesRegistryImpl.newServiceLocator(AbstractModulesRegistryImpl.java:144)
at com.sun.enterprise.module.common_impl.AbstractModulesRegistryImpl.createServiceLocator(AbstractModulesRegistryImpl.java:218)
at com.sun.enterprise.module.common_impl.AbstractModulesRegistryImpl.createServiceLocator(AbstractModulesRegistryImpl.java:224)
at com.sun.enterprise.module.single.StaticModulesRegistry.createServiceLocator(StaticModulesRegistry.java:88)
at com.sun.enterprise.admin.cli.CLIContainer.getServiceLocator(CLIContainer.java:217)
at com.sun.enterprise.admin.cli.CLIContainer.getLocalCommand(CLIContainer.java:255)
at com.sun.enterprise.admin.cli.CLICommand.getCommand(CLICommand.java:231)
at com.sun.enterprise.admin.cli.AdminMain.executeCommand(AdminMain.java:371)
at com.sun.enterprise.admin.cli.AdminMain.doMain(AdminMain.java:306)
at org.glassfish.admin.cli.AsadminMain.main(AsadminMain.java:57)
the command $ asadmin list-applications says the server is not up
i'm on Mx Linux fully updated
$ java -version
openjdk version "11.0.16" 2022-07-19
OpenJDK Runtime Environment (build 11.0.16+8-post-Debian-1deb11u1)
OpenJDK 64-Bit Server VM (build 11.0.16+8-post-Debian-1deb11u1, mixed mode, sharing)
i haven't done anything yet, i can't find any problem similar to this on google
It was the JDK version
Inside netbeans when i clicked on Start to start the server, it says something about JDK 11, netbeans has a feature that let's you download many open JDK versions, i downloaded a random openJDK8 version and it worked
I don't know how to edit the JDK version manually or from any other IDE though, but my (video) class is using netbeans so for now i'm ok (they didn't teach on video because the video is 2 years old so it's outdated)
I have installed eclipse on my iMac and when I try to open it, it gives me this error:
Failed to find a Main Class in
"/Applications/Eclipse.app/Contents/MacOS//../Eclipse/ plugins/org.eclipse.equinox.launcher_1.5.0.v20180512-1130.jar".
On my MacBook Pro, everything works fine, but I have done nothing different.
I have checked other posts, but most of them refer to a windows OS. There was an answer which said that it can just open when everything is in an English folder and this is true for me!
Thanking you in advance!
I came across this error after installing Eclipse PDT.
Open your terminal and run the version command: java -version.
If your java version is below 1.8, you will have to update your Java
Runtime Environment to at least 1.8.0 by installing an updated JDK
here.
Then re-run the java version command and your version
should be updated.
You should now be able to install and run
Eclipse.
I have the same issue, but on my MacBookPro. I first installed eclipse Photon, which when starting up prompted me to install Java 6, which I did from https://support.apple.com/kb/DL1572?locale=en_US
Then I also installed the latest JRE (jre-8u171-macosx-x64 as of yesterday). When running eclipse again I started getting this error. Then I tried to run from the command line, and got this error:
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/eclipse/equinox/launcher/Main : Unsupported major.minor version 51.0
When googling that, the answers said that the reason for that is that the Oracle installer does not update the symlink in /usr/bin, which seemed to be confirmed by the fact that running java -version returned this:
java -version
java version "1.6.0_65"
The solutions I found for that were not feasible in MacOS starting in version El Capitan, and I am on High Sierra, so I followed the instructions in this post to fix that, and it worked, now I get:
java -version
java version "1.8.0_171"
Java(TM) SE Runtime Environment (build 1.8.0_171-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.171-b11, mixed mode)
After all of this, however, I get the same "Failed to find a Main Class" error on the dialog as reported initially here, and the same "UnsupportedClassVersionError" on the CLI that I had when the system was still on java 6, so now I am still stuck and out of ideas.
EDIT: FIXED IT!!
I kept thinking that the problem was the java version, it was somehow still using java 6 (which I had installed due to the initial prompt).
So I followed the instructions here to remove what I had installed for the alleged java 6 issue. Then I found this post in the eclipse forums, which stated at the end (comment added by Eric Rizzo on Tue, 14 February 2017 21:56) that this is not an Eclipse message, but rather an OS message, and that one should NOT do that as apple messed things up with that patch. And then it goes to explain that one should install java 8 JDK (NOT just the JRE as I had done). Once I removed Java 6 and installed the full java 8 JDK, it ran fine :)
You can edit the eclipse.ini with your vm configuration in the beginning of the file
-vm
/yourJvmPath/jdk-12.0.1.jdk/bin/java
cat /Applications/Eclipse.app/Contents/Eclipse/eclipse.ini
-vm
/Users/SomeUser/jdk-12.0.1.jdk/bin/java
-startup
../Eclipse/plugins/org.eclipse.equinox.launcher_1.5.400.v20190515-0925.jar
--launcher.library
../Eclipse/plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.1000.v20190125-2016
PD. It works with ApacheDirectoryStudio for MAC
This one works for me with MAC OS Mojave.
You can download the Java SE Development Kit 8u221 for mac from the below link.
jdk-8u221-macosx-x64.dmg
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
We're getting ready to deploy our application (Cytoscape) for Windows, Linux and Mac.
We find that when Java 9 is installed on Fedora 26 64 bit, trying to run the installer gives "JVM must be greater than 1.6", though our JVM range is set to 1.8.0_152...1.9.
Is there a later installer/launcher version that gives a more informative error message? ... could we have something misconfigured??
On the same platform, but with Java 10 installed instead, the launcher apparently allows execution to commence (despite our JVM range). This ends badly, as Karaf complains:
/opt/Cytoscape_v3.6.1/framework/bin/karaf: line 242: [: : integer expression expected
-Djava.endorsed.dirs=/usr/java/jdk-10/jre/lib/endorsed:/usr/java/jdk-10/lib/endorsed:/opt/Cytoscape_v3.6.1/framework/lib/endorsed is not supported. Endorsed standards and standalone APIs
in modular form will be supported via the concept of upgradeable modules.
Error: Could not create the Java Virtual Machine.
Error: A fatal exceThe programmes occurred. Program will exit.
Is the launcher somehow misidentifying the JVM? Shouldn't it give an informative error and stop the launch (including Karaf) from proceeding?
Thanks!
I'm working on adding Google Play Game Services to a Unity project.
Started getting these errors recently, however not sure if it is because of the Game Services, or could be I updated my machine.
The following in Console output:
Failed to compile resources with the following parameters:
-bootclasspath "/Users/alex/development/adt-bundle-mac-x86_64-20131030/sdk/platforms/android-21/android.jar"
-d "/Users/alex/Documents/development/unity/Maze/Maze/Temp/StagingArea/bin/classes"
-source 1.6 -target 1.6 -encoding UTF-8 "com/facebook/android/R.java" "com/google/android/gms/R.java"
"com/google/example/games/basegameutils/R.java"
"com/google/example/games/mainlibproj/R.java"
"com/mildspring/maze/R.java" warning:
java/lang/Object.class(java/lang:Object.class): major version 51 is
newer than 50, the highest major version supported by this compiler.
It is recommended that the compiler be upgraded. 1 warning
UnityEditor.HostView:OnGUI()
Error building Player: UnityException: Resource compilation failed!
Failed to recompile android resource files. See the Console for
details.
Got my answer, the issue was that "major version 51" is java 1.7, "version 50" is java 1.6. The solution was to install Java 1.7 and set path accordingly with the following command.
sudo ln -nsf /Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK
For me, changing the JDK path at Preferences => External Tools => JDK finally resolved this issue. Creating the symbolic link wasn't enough or possibly not even needed.
I would just re-install or update JDK , And its work
http://www.oracle.com/technetwork/java/javase/downloads/index.html
I am using the Mechanical Turk command line tools on Windows. When I try to run a command (e.g., getBalance, createQualificationType), I always get the following error:
Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file
Any clues as to what I could look at to fix this would be greatly appreciated!!
I have tried updating my key and secret key to no avail.
Note: I can get help for the commands by using -help, but I cannot run the commands themselves.
This error occurs whether I am running either JRE 1.5.0_06-b05, 1.5.0_22-b03, or 1.7.0_17-b02. The command line tools documentation states, "You must have the Java JRE 1.5.X (JRE 5). The Command Line Tools are not 100% compatible with JRE 6."
Since I am using the version of the command line tools packaged with JRE, I have also uninstalled my JRE. I get the same error.
UnsupportedClassVersionError means that you are trying to use a Java class that was compiled with a newer JDK on an older Java runtime environment. For example, you have a class that was compiled with JDK 7, and you are trying to use it on a Java 6 or older runtime environment.
Java is downwards compatible; newer Java runtime environments can run Java classes compiled with older versions without modifications, but not the other way around.
Check with what version the class you are trying to use was compiled, and use a Java runtime environment with the same version or newer to run the class.
You can check your Java runtime environment and JDK versions with:
java -version
javac -version
Apparently, the CLT installer installs a JRE that is too old to run the tools included in the installer. Seems like a serious bug (certainly annoying).
You can fix by installing and using a more recent JDK.
This post contains instructions on how to do so:
https://forums.aws.amazon.com/message.jspa?messageID=388586#388585