Eclipse can't find / load main class

Question

My Eclipse (Indigo) was running just fine. I created a simple class Hello. It is placed in package cont in the folder ch13. However

Answer 1

You must have main function in your class. Like

public class MyDataBase {

public static void main(String args[]) {

}
}

Answer 2

I solved this error by closing the project, removing it from eclipse and then importing it again.

Might be a little simpler than to redo the whole workspace setup.

Answer 3

I have solved the issue following way:

Go to Run Configuration (Right Click on Java File->Run->Run Configuration).

Go to ClassPath Tab: Click on Advanced -> Add Folders -> Add bin directory (which has class file in it for Java source code)

Re run the code, now it will solve the issue. It worked for me

Answer 4

This worked for me finally : RUN -> RUN CONFIGURATIONS -> DELETE THE RUN CONFIGURATION CLOSE ECLIPSE REOPEN ECLIPSE CREATE RUN CONFIGURATION AGAIN.

Tadaaaa !! It works

Answer 5

Move your file into a subdirectory called cont

Answer 6

Renaming the main class should be enough (and easiest):
- Go to your class and set cursor to your class name;
- ALT + Shift + R and rename the class (build if not done automatically);
- You should be able to run it now;
- Rename the class to the old name if you want;