Introduction

This error message is caused by a problem with the Java classpath. The classpath is a list of directories and/or JAR files that are used by the Java Virtual Machine to search for classes and resources.

If the classpath is not set correctly, the Java Virtual Machine will not be able to find the classes that you are trying to run. In order to fix this problem, you need to add the directory that contains the orgcodehausplexusclassworldslauncherlauncher class to your classpath.

There are a few ways to do this, but the easiest way is to use the -cp or -classpath command line option when you run your program. For example:

java -cp /some/directory:/some/jarfile MyClass

This will add /some/directory and /some/jarfile to the classpath. You can also set the CLASSPATH environment variable to include these directories and/or JAR files. For example:

export CLASSPATH=/some/directory:/some/jarfile:$CLASSPATH

What is the error?

The error indicates that the main class could not be found or loaded. This could be due to a number of factors, including incorrect classpath settings, or missing dependencies.

How to fix it?

The “Error: Could not find or load main class … org.codehaus.plexus.classworlds.launcher.Launcher” is a very common error that can occur when running any Java-based application from the command line. The error message is telling you that the “org.codehaus.plexus.classworlds.launcher.Launcher” class could not be found or loaded, which is required to run your application. This can be caused by a number of factors, but the most common are classpath issues or environment variable issues.

Here are some things you can try to fix this error:

1) Check your classpath and ensure that all of the required jars are included. The easiest way to do this is to use a tool like Maven or Gradle, which will automatically manage your dependencies for you.

2) If you’re using an IDE like Eclipse or IntelliJ, check the build path settings and make sure that all of the required jars are included on the build path.

3) If you’re running your application from the command line, make sure that the java executable is on your system path and that you’re using the correct syntax to execute your program. For example, if your program is in a file named “MyProgram.java”, you would use the following command to run it:

java MyProgram

4) Make sure that you’re using a compatible version of Java. For example, if your program was written for Java 8 but you’re trying to run it on Java 7, you will get this error message because Java 7 does not include some of the classes that are required by programs written for Java 8. In this case, you will need to install Java 8 in order to run your program properly

Conclusion

This error indicates that the Java ClassLoader is not able to find the main class that you are trying to execute. This is either because the class name was mistyped, or because the class is not in the classpath. To fix this, make sure that you have spelled the class name correctly, and that the class is in the classpath.