Head First Exercise Pg 43

[Tariq Ab]

Hi,

I'm having a problem running this program. It compiles and everything but for some reason it doesn't run
I'm still a noob so i know it must be something silly

class DrumKit {
boolean topHat = true;
boolean snare = true;

void playTopHat() {
 System.out.println("ding ding da-ding");
}
void playSnare() {
 System.out.println("bang bang ba-bang"); 
 
 }
 }
 



class DrumKitTestDrive {

public static void main (String [] args) {

DrumKit d = new DrumKit ();
d.playSnare();
d.snare = false;
d.playTopHat();

if (d.snare == true) {
 d.playSnare();
 }
}
}

[fred rosenberger]

what exactly do you mean by "it doesn't run"? When you try to run it, the OS probably gives you a message telling you exactly what the problem is. That information is actually very helpful in determining the solution - in fact, it is critical.

Please post the exact and complete error message. without it, all we can do is guess at any of the dozen or so possible things it could be.

[Tariq Ab]

sorry about that.

this is what i get:

main method not found in class DrumKit, please define the main method as: public static void main (String[] args )

[Greg Brannon]

That's the most helpful error message I think I've seen. It tells you plainly that the compiler is looking for the main() method in your class DrumKit. That's because your file is named DrumKit.java, and the compiler is expecting the class of the same name to contain the required main() method.

You could change the file name to "DrumKitTestDrive.java" or move your existing main() method to your DrumKit class and eliminate the DrumKitTestDrive class entirely, depending on your program or assignment's requirements.

[Campbell Ritchie]

I think you ought to keep the multiple classes. That is one of the nice things about Head First; they give you the classes and a different class to run them from. It is a good ot become accustomed to using multiple classes.