Error: Could not find or load main class (netbeans and java)

Question

I am new to Java, but have some programming experience. I am reading a book on how to program in the Java language. My progress is impeded by my lack of knowledge with NetBe

Answer 1

This worked for me (Java 8 on Netbeans, June 2019): File > Project Properties > Run > Application Class > Browse > and try a different application class entry

Answer 2

I had the same problem and was able to fix it by setting the paths via cmd line:

cd C:\Program Files\Java\jdk*version*\bin>cd\
set path="C:\Program Files\Java\jdk*version*";
set classpath="C:\Program Files\Java\jdk*version*\lib\rt.jar";

Answer 3

Close netbeans and then delete this directory C:\Users\Your name here\AppData\Local\NetBeans\Cache

Start Netbeans again and let it read the project.

Test project. Run project. It should work fine.