In conclusion, the “Could not find or load main class Java” error message can be resolved by checking the package structure, classpath, classname, and syntax of your Java code.

The JDK is the development platform for building Java applications. Learn about different JDK versions, then install a JDK in your development environment and use it to compile a Java program.

For the demonstrations of using javap to determine the types of debug supported in a given class, I’m using a very simple Java class called SimpleClass.