caused by: java.lang.classnotfoundexception

Error: Main class cannot be found or could not be loaded

caused by: java.lang.ClassNotFoundException: hello.Lautturi

Cause

1. The file name and class name do not match.

filename:

Lautturi

class name:

public class LautturiTest {
}

2. make sure the classpath is not overridden and JAR be added to the classpath.