I have created a program in Java which edit/read a XML file. I have done it using Javax.xml package and org.w3c package. The program runs fine on JRE 1.6 but the same code when runs on JRE 1.1 throws exception of java.lang.noclassdeffounderror javax/xml/parsers/documentbuilder. I did my own investigation in this issue and got to know that Javax package is not provided in JRE 1.1. Is there a way I can run this program on JRE 1.1, by somehow able to include or reference this package using a jar or any other thing possible?
Thanks,
Amit Singh
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folks!
I have 2 separate servers on Linux for Jenkins and Sonarqube. The code is written in Java 1.8 and can be compiled using Jenkins. Everything works fine.
It fails at the SonarQube step because our SonarQube uses Java 11, and it fails with this error.
ERROR: Error during SonarScanner execution java.lang.UnsupportedClassVersionError: org/sonar/batch/bootstrapper/EnvironmentInformation has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
How can I fix this?
You have to run the sonar scanner with at least Java 11, no matter what version of Java your application supports.
Two years ago I had a similar issue. I don't know if your app and sonarqube should run on the same machine (as it was in my case).
If yes, just install both versions of java and set the path of Java 11 to SonarQube settings.
According to sonarqube community, you should do the following:
Edit conf\wrapper.conf, specifically the wrapper.java.command to following:
wrapper.java.command=C:\Program Files\Java\open jdk-11.0.2\bin\java
#wrapper.java.command=java
I tried to use cmd prompt to execute my java file but I got this error that says
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: MovingObject has been compiled by a more recent version of the Java Runtime (class file version 60.0), this version of the Java Runtime only recognizes class file versions up to 52.0
but when I tried executing my java file on eclipse it works perfectly fine, its just that I want to try and run it to the command prompt to see if both ways works. Tried searching about the problem but most of the other problems is way back from long ago.
The problem was that my computer was confused as to what JRE to use. I have manually installed JDK and JRE 8 before.
So when I tried checking it through cmd.
javac -version is Java 16
while, java -version is Java 8
So, I uninstalled my Java 8 since I have installed JDK 16 and JRE version 16 on my eclipse which confuses my computer as to what version to use. That's pretty much it.
is anyone knows how to change the jre libraries on java dynamic web project(I am using Eclipse and Maven)? The case is this, when I first created the project on Eclipse Oxygen package M5 the default jre was 1.6, I changed the Java Build Path(libraries) into 1.7/1.8, however upon updating the project it always returns to 1.6 and there is a red mark on the project folder. I already tried deleting the project and import it as Existing Maven Project and then update and clean but still nothing happens. This happens whenever I am creating a project without XML based configuration. I installed JDK 1.8.0 update 111, 121, and 131 and Apache Tomcat V7(XAMPP). On my brother's laptop everything works fine.
By the way, I also tried to replace .m2 folder of my laptop by copying .m2 folder from my brother's laptop.
Any help is much appreciated.
I assume you are using m2e, the Maven integration for Eclipse, which offers the import as Existing Maven Project option. m2e takes the version for the JRE System Library container from the configuration of the maven-compiler-plugin; this ensures that Eclipse and mvn behave consistently. Try changing the <source> and <target> configuration options of the maven-compiler-plugin, maybe followed by a Maven > Update Project to make sure m2e has sync’ed the changes to the pom.xml with the Eclipse buildpath.
I was planning to use Eclipse Juno instead of GGTS/STS provided by SpringSource. I have installed on my Eclipse the plug-in for the GGTS support. I also have downloaded the newest version of Grails that is version 2.3.3. All is well, but when I create a Grails project on my Eclipse IDE this error always occurs on the Console View.
General error during semantic analysis: unable to locate the java compiler com.sun.tools.javac.Main, please change your classloader settings
java.lang.ClassNotFoundException: unable to locate the java compiler com.sun.tools.javac.Main, please change your classloader settings
I don't see any problems when I type java on my command prompt. I am currently using Windows 7 x64 with a JavaSE 6/7 both on x64. Is it possible the cause of this problem is that Grails needs to have a jre6+ under x86 platform?
After searching all over the web, I am not able to solve my problem of Java execution. When using command prompt to run my "first" Java program, I am faced with the errors of Unsupported class version and Main class not found. Program will exit.
I have 2 versions of Java on my PC, Java 6 and 7. I have set the path of the JDK 7 in path environment variables and classpath too. I know the problem: I have javac -version as 1.7.02 and java version as 1.6.02, but how to change it and fix the problem?
Please elaborate the problem in easy and understandable language!
You have to run your program with the same or higher version of java that yxou compiled it with.
So you can either compile your program with Java 6 on your PC or run it with java 7.
To run your program with java 7 just use the complete path to your java runtime environment. for instance
c:\jdk7\bin\jawaw.exe yourprogram
How to tell your system which Java version to use is explained here:
Why does java -version returns old version?
JRE [java command] come with your JDK 1.7, and you must change your JAVA_HOME variable to your JDK 1.7 folder.for this work read this article