I am getting this message while running SBT in CMD, I have installed 18.02 Java and 1.8 JRE already
Related
I'm seeing a strange issue when trying to run sbt on any of my projects on my new Mac. These are known-good projects so it is likely to be something up with sbt on my new machine (installed using brew install sbt).
As you can see below something is "not[newline]found", which is leading to the "Could not find or load main class not" error. I can't tell what this is or why it is happening, has anyone seen this before?
sbt -v
[sbt_options] declare -a sbt_options='([0]="-Dsbt.jse.engineType=Node" [1]="-Dsbt.jse.command=node" [2]="not" [3]="found")'
[process_args] java_version = '8'
# Executing command line:
java
-Dfile.encoding=UTF-8
-Xms1024m
-Xmx1024m
-Xss4M
-XX:ReservedCodeCacheSize=128m
-Dsbt.jse.engineType=Node
-Dsbt.jse.command=node
not
found
-jar
/usr/local/Cellar/sbt/1.5.6/libexec/bin/sbt-launch.jar
Error: Could not find or load main class not
Thanks to #LuisMiguelMejíaSuárez for the answer that helped get this working.
Uninstalled brews version of sbt (brew uninstall sbt)
Installed coursier CLI (https://get-coursier.io/docs/cli-installation)
Installed sbt via coursier (cs install sbt).
sbt fails with a cryptic error on issuing any command (compile, assembly, clean or any other).
$ sbt --version
error: error while loading String, class file '/modules/java.base/java/lang/String.class' is broken
(class java.lang.NullPointerException/null)
I am on a machine running macOS, and sbt was installed via homebrew. I have tried upgrading to the latest versions of sbt (1.3.10), but the error still persists.
The issue is documented on the SBT Download page.
Homebrew maintainers have added a dependency to JDK 13 because they want to use more brew dependencies (brew#50649). This causes sbt to use JDK 13 even when java available on PATH is JDK 8 or 11. To prevent sbt from running on JDK 13, install jEnv or switch to using SDKMAN.
I was able to resolve the problem by using JDK 8 via jEnv.
Since sbt documents JDK 8 and 11 as compatible versions
We recommend AdoptOpenJDK JDK 8 or AdoptOpenJDK JDK 11
try controlling which JDK is used by sbt via -java-home setting which can be configured system-wide via sbtopts run configuration
/usr/local/etc/sbtopts
or per-project basis via
<project-root>/.sbtopts
For example, to configure JDK used by sbt in current project, try setting in .sbtopts
-java-home /Users/picard/.sdkman/candidates/java/current
This is what solved my problem on my Mac.
brew uninstall sbt
Install sdkman
curl -s "https://get.sdkman.io" | bash
source "$HOME/.sdkman/bin/sdkman-init.sh"
Install sbt via sdk
sdk install sbt
I had the same issue recently. What worked for me is to install SDKMAN(https://sdkman.io/)
$ curl -s "https://get.sdkman.io" | bash
...
$ source "$HOME/.sdkman/bin/sdkman-init.sh"
...
After installation, I wanted to see what versions of Java I can install. So I simply run this command to list all the available versions of Java
sdk list java
Choose the version you want to install (recommend installing either 8 or 11 as mentioned above) and simply run the command with the identifier that specifies your version from the list
sdk install java 11.0.3.hs-adpt
After installation, it set the Java 11 to default on my system. I then ran the sbt command again and it worked.
If you are using SDKMAN then in some cases certain versions of Java (i.e. JDK) from different vendor might help.
E.g. I was using Amazon Correto JDK8 (version 8.332.08.1-amzn) and it could not properly build my sbt project in IntellIJ IDEA, so I've switched to using Zulu's JDK8 (version 8.0.332-zulu) as default java version.
Hope this helps and good luck. :)
Sonarqube Startup script does not start ob ubuntu 16.04
Error log shows:
Encountered an error running main: java.lang.IllegalStateException: SonarQube requires Java 11+ to run
java.lang.IllegalStateException: SonarQube requires Java 11+ to run
at org.sonar.application.App.checkJavaVersion(App.java:93)
at org.sonar.application.App.start(App.java:56)
at org.sonar.application.App.main(App.java:98)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.tanukisoftware.wrapper.WrapperSimpleApp.run(WrapperSimpleApp.java:240)
at java.lang.Thread.run(Thread.java:748)
<-- Wrapper Stopped
--> Wrapper Started as Console
Launching a JVM...
Startup failed: Timed out waiting for a signal from the JVM.
JVM did not exit on request, terminated
JVM Restarts disabled. Shutting down.
<-- Wrapper Stopped
If i run java -version:
java version "11.0.3" 2019-04-16 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.3+12-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.3+12-LTS, mixed mode)
Open conf/wrapper.conf file
Change wrapper.java.command=java to path where your JavaDK is installed eg. wrapper.java.command=C:\Program Files\Java\jdk-11.0.4\bin\java
I had the same problem a few moments ago, my JAVA_HOME variable pointed to the correct version of my profile, but when I run java -version, it printed 1.8, so I run this command:
update-java-alternatives -l
This showed me all Java versions that were installed on my machine.
After that, I run this another command:
sudo update-java-alternatives -s java-11-oracle
This changed the Java version on my machine and it works just fine.
"Warning Support for Java 8 has been deprecated in SonarQube v7.8 and will be removed in SonarQube v7.9 LTS."
checkout you java -version, and the Supported Platforms requirements: https://docs.sonarqube.org/7.7/requirements/requirements/
Then go to the downloads and choose what is the best for you:
https://www.sonarqube.org/downloads/ (Show all versions)
Check for the JRE version, I have come across the issue where the Java SDK version and JRE -version was different. That may be the issue.
Most user would like to download JDK 11 here as mentioned in recent comments. That should works.
However, I would recommend to install latest version from following link (because you have just downloaded latest sonarqube) for better compatibility.
SDK download link: https://www.oracle.com/java/technologies/javase-downloads.html
FYI,
For mac user,
Install JVM on your machine (I installed it by Homebrew).
brew cask install java
and restarted the sonar by
./sonar.sh restart
it worked for me
while installing sbt 0.13.15, it fails because it asks for openjdk-8. But I am running oracle jdk 8 and want to run sbt with it. How can I do this?
This error is shown
sbt depends on openjdk-8-jdk; however:
Package openjdk-8-jdk is not installed.
dpkg: error processing package sbt (--install):
dependency problems - leaving unconfigured
Things run without any problem when I work on IntelliJ, but when I try to compile and run my Scala code in the command line (with sbt run) the following error message pops up.
[error] (run-main-0) java.lang.UnsupportedClassVersionError: akka/event/LogSource : Unsupported major.minor version 52.0
java.lang.UnsupportedClassVersionError: akka/event/LogSource : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:803)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2625)
at java.lang.Class.getMethod0(Class.java:2866)
at java.lang.Class.getMethod(Class.java:1676)
I'm using Ubuntu 14.04 LTS.
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.5 LTS
Release: 14.04
Codename: trusty
And my Scala version is 2.9.2.
$ scalac -version
Scala compiler version 2.9.2 -- Copyright 2002-2011, LAMP/EPFL
I barely started learning Scala a few weeks ago, so if anyone could provide some advice on what I should look into, it would be greatly appreciated.
It turned out that there was a mismatch in the JRE version. In the IntelliJ project settings the project SDK was set to be Java 1.8 (on my local machine), whereas JRE 1.7 was installed on the Ubuntu system (an EC2 instance).
In Ubuntu 14.04, the OpenJDK 1.8 is not available by default so the following repository must be added manually. Then the OpenJDK can be installed.
sudo add-apt-repository ppa:openjdk-r/ppa
sudo apt-get update
sudo apt-get install openjdk-8-jre
The default Java version in the system can be changed by running the following command.
sudo update-alternatives --config java
Once I installed openjdk-8-jre and adjusted the default Java version in the system, the sbt run command ran without any issue.
I am using a Mac and trying to learn Scala by following a simple Scala tutorial. I got this error when I am trying to run the app.
Reason:
My installed java version was 8. But on my Terminal the version I was using was 7.
Fix:
I updated the java version to the newest version and then it worked.
Update to correct java version and compile again. It should work fine
I encountered the same proble with CentOS-7.6, here is my solution:
run vim /etc/profile in command line, check your Environment variable to find the jdk version, change it to jdk-1.8. Save and quit safely.
example picture
run /usr/sbin/alternatives --config java, choose version-1.8.
run /usr/sbin/alternatives --config javac, also choose version-1.8.
run source /etc/profile to make the settings work.
By doing the four steps, I was able to run command sbt again without orror.sbt picture
I suddenly started getting this error on Windows 10. Turned out my path had somehow reverted to point to an old version of the java jdk. To be thorough, I first upgraded to the latest jdk (from here for Oracle), which for me was 8u152. I then corrected my path entry to
c:\Program Files\Java\jdk1.8.0_152\bin
(This would be a little different for the 32 bit version.) I then verified that javac -version indeed returned 1.8.0_152 (make sure to open a fresh terminal - an already open one will remember the old path).
And then sbt run worked. (Again remembering to do this from a fresh terminal so path is fresh.)