Question

I am currently in a Java class using Java: How to Program, Ninth Edition

I am following the book in creating a GradeBook and have come across an error stating no main classes found.

Here is the code for the two files in my project folder:

GradeBook.java

// Fig. 2.1: GradeBook.java
// Class declaration with one method.
public class GradeBook
{
    // display a welcome message to the GradeBook user
    public void displayMessage()
    {
        System.out.println ( "Welcome to the Grade Book!");
    } // end method displayMessage
} // end class GradeBook

GradeBookTest.java

// Fig. 3.2: GradeBookTest.java
// Creating a GradeBook object and calling its displayMessage method.

public class GradeBookTest
{
    // main method begins program execution
    public static void main( String[] args )
    {
        // create a GradeBook object and assign it to myGradeBook
        GradeBook myGradeBook = new GradeBook();

        // call myGradeBook's displayMessage method
        myGradeBook.displayMessage();
    } // end main
} // end class GradeBookTest    

I am using the NetBeans IDE to create and run my projects. It is only my second week into my Java class so I am still learning and working my way around NetBeans and Java. Any advice would be awesome.

Answer 1

If it was eclipse, I would have just run the main method in the GradeBookTest. Are you trying to run the project ? or just the GradeBookTest main ?
Try running GradeBookTest.