I have upgraded Windows XP - PC RAM from 1GB to 3GB. Since JVM had some problem Eclipse Helios, I had to reinstall it and I did clean installation.
I have installed jdk7( jdk-7-ea-bin-b88-windows-i586-08_apr_2010.exe ).
Now my tomcat( Apache Tomcat Version 6.0.16 ) doesn't start.
Log says
java.lang.UnsupportedClassVersionError:
javax/management/MalformedObjectNameException :
Unsupported major.minor version 51.3
So I installed latest version of Tomcat i.e. Tomcat-6.0.29. Log says
java.lang.ClassFormatError:
Incompatible magic value 1853108037 in class file javax/management/MXBean
Thanks a lot for help.
Yeah it looks like Tomcat isn't compatible with JDK7 This to me says there are bugs
Related
I am running java 8 on my Mac, but when I try to create a new project it gives me this error saying it cannot enable Maven. I never had this problem on windows.
The Apache NetBeans 13 binary releases require JDK 11+, and officially
support running on JDK 11 and JDK 17.
Source: https://netbeans.apache.org/download/nb13/nb13.html
Therefore try to upgrade your JDK.
I am using Eclipse 2020-06 (I have made a fresh install of Eclipse instead of upgrading it from an earlier version of Eclipse) and JDK 8 (1.8.0_261). My OS is Windows 10.
JAVA_HOME is set to C:\Program Files\Java\jdk1.8.0_261
When I download "Codename One" plugin from Eclipse Marketplace it shows the version as 6.0 and it says "Installed" at the end of the installation process.
However, when I go to "Help -> Eclipse IDE -> Installation Details" under Eclipse, CodenameOneFeature version is listed as: 1.0.0.201409151325
When I select CodenameOneFeature from this list and hit Update, it says "No updates found". So basically I cannot force it to update to 6.0.
I can confirm that I have the earlier version installed also from the setting of the Codename One projects I create: when I go to Properties -> Java Compiler, the compliance level is set to 1.5 (also 1.5 is used in build.xml file).
BTW, I have also tried installing Eclipse 2019-06 (instead of 2020-06) and/or installing JDK 10 (instead of JDK 8) and/or modifying the eclipse.ini (by adding -vm option) so that it uses the version of JDK I want (instead of setting JAVA_HOME). But no combination of those has solved the problem.
Updated answer:
I found the problem. I broke the update site with a commit a couple of weeks ago. This should be fixed in a couple of hours once server caches refresh.
Original answer:
With Eclipse at this time we only support JDK 8. We're experiencing issues in updating the eclipse plugin to the latest version. Once installed I think you can also use JDK 11 but it doesn't matter since we don't support JDK 11 features.
Once a reasonably new version of the plugin is installed you can press update in Codename One Settings and it will update our libraries to the latest version equivalent to the other IDEs.
I have downloaded the dnn version -9.4.0 install package from url -https://github.com/dnnsoftware/Dnn.Platform/releases/tag/v9.4.0 and configured that with IIS server but it's not running.I am getting compile time errors.
According to it's release document I have upgraded .net framework (4.7.2) in my system as well.
Same Install package for ver-9.2.2 I have downloaded then configured that in IIS and it's running proper.
Can you please confirm me about the issue in 9.4.0 ?
Can you give a few more details?
As an aside, you might want to check out nvQuickSite as an aid in installing DNN.
There were some issues with 9.4.0, but mostly about upgrades. Please try to download and install 9.4.1 which was released recently and addresses these issues.
Error appears when running jar file
I want to install Oracle form developer 11g, for that i have to install Weblogic server 11g but it gives fatal error upon installing , jdk 1.7.0_80 64 bit installed.Snap is attached for reference...can any one help me finding the solution? Thanks in advance
Solved the issue by deleting oracle and java instances because i have install jdk 1.7 and oracle developer 10g contains jdk 1.4,so there is an issue in java versions..because of that when i run weblogic.jar file,it gives an error
Check your java version. 1.7.0_11
Run cmd as Adminsnitrator
%JAVA_HOME%\bin\java -Xms256m -Xmx512m -XX:PermSize=128m -XX:MaxPermSize=256m -jar wls1036_generic.jar -mode=GUI -log=wlslog.log
solr-5.4.0 version
My Java version
java -version
java version "1.7.0_91"
OpenJDK Runtime Environment (IcedTea 2.6.3) (7u91-2.6.3-0ubuntu0.14.04.1)
OpenJDK 64-Bit Server VM (build 24.91-b01, mixed mode)
I did all steps finally am getting this error
sudo service solr status
Found 1 Solr nodes:
Solr process 6003 from /var/solr/solr-8983.pid not found.
How to fix this error?
That Digital Ocean tutorial recommends Java 8 with Solr 5 and provides installation instructions using a PPA. I also found another SO question where switching to Java 8 was the resolution.
I created a fresh Ubuntu 14.04 VM using Vagrant and VirtualBox with these commands...
vagrant init ubuntu/trusty64
vagrant up
Then I followed the tutorial with Solr 5.4.0, and got the same error you did. However, my Solr logs were not deleted, so I was able to find this...
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (mmap) failed to map 402653184 bytes for committing reserved memory.
My Vagrant VM had 512 MB of RAM so I doubled that to 1 GB which is recommended in the tutorial, did a vagrant reload, and Solr started working. Here is my minimal Vagrantfile...
Vagrant.configure(2) do |config|
config.vm.box = "ubuntu/trusty64"
config.vm.network "private_network", ip: "192.168.33.10"
config.vm.provider "virtualbox" do |vb|
vb.memory = "1024"
end
end
I'm using VirtualBox 5.0.10 and Vagrant 1.8.1. I hope this works for you.
UPDATE: I just went through the tutorial again with a 32-bit Ubuntu 14.04 VM (ubuntu/trusty32 in Vagrantfile) and that also worked. So if you're on a 32-bit host or the 64-bit VM doesn't work for you, the 32-bit VM should work.
I will throw my answer in here just in case someone else spends another hour like I did.
Solr version 6.1.0 + Java 1.7 same error.
I had to upgrade to 1.8. How did I know that was the problem?
:/var/solr/logs# cat solr-8983-console.log
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/eclipse/jetty/start/Main : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:803)
at ....
The 52 version means you need Java 1.8.
Upgrade Ubuntu using
$ sudo add-apt-repository ppa:webupd8team/java
$ sudo apt-get update
$ sudo apt-get install oracle-java8-installer
Credit to this comment.