Java help

muff03

Hi guys, I'm at the beginning of my self taught Java apprenticeship and am in need of some help. I'm working from 'Head First Java' 2005, in chapter 2. The code is for a TapeDeck output generator (pg 42).

I have the code correct as far as I can see from what I've been doing all along throughout the previous exercises, but after compiling I get the following:

Static Error: This class does not have a static void main method accepting String[].

Here's the code:

class TapeDeck {
    boolean canRecord = false;
    void playTape() {
        System.out.println("tape playing");
    }
    void recordTape() {
        System.out.println("tape recording");
    }
}
class TapeDeckTestDrive {
    public static void main (String[] args) {
        TapeDeck t = new TapeDeck();
        t.canRecord = true;
        t.playTape();
        if (t.canRecord == true) {
            t.recordTape();
        }
    }
}

Any ideas? It seems to be with this chapter that I'm having problems with getting any output from my code. I'm using DrJava on a macbook running OSX 10.7.

threein99

muff03 wrote: »

Hi guys, I'm at the beginning of my self taught Java apprenticeship and am in need of some help. I'm working from 'Head First Java' 2005, in chapter 2. The code is for a DrumKit output generator (pg 43).

I have the code correct as far as I can see from what I've been doing all along throughout the previous exercises, but after compiling I get the following:

Static Error: This class does not have a static void main method accepting String[].

Here's the code:

class TapeDeck {
    boolean canRecord = false;
    void playTape() {
        System.out.println("tape playing");
    }
    void recordTape() {
        System.out.println("tape recording");
    }
}
class TapeDeckTestDrive {
    public static void main (String[] args) {
        TapeDeck t = new TapeDeck();
        t.canRecord = true;
        t.playTape();
        if (t.canRecord == true) {
            t.recordTape();
        }
    }
}

Any ideas? It seems to be with this chapter that I'm having problems with getting any output from my code. I'm using DrJava on a macbook running OSX 10.7.

Is the file saved as TapeDeckTestDrive .java ?

muff03

No, TapeDeck.java.

robbiezero

muff03 wrote: »

No, TapeDeck.java.

you dont need the class TapeDeckTestDrive.

Remove that and have your main method in the TapeDeck class and it will work.

Or move the TapeDeskTestDrive class to its own TapeDeskTestDrive.java class.

muff03

Spot on robbie, works perfect. Why would the book include

class TapeDeckTestDrive

as part of the code then?

robbiezero

muff03 wrote: »

Spot on robbie, works perfect. Why would the book include

class TapeDeckTestDrive

as part of the code then?

you were probably meant to call the file TapeDeckTestDrive.java I guess which would also work fine.

robbiezero

robbiezero wrote: »

you were probably meant to call the file TapeDeckTestDrive.java I guess which would also work fine.

Actually that is the correct answer to your question, not my previous one.

muff03

thanks for the help

robbiezero

muff03 wrote: »

thanks for the help

No bother. threein99 actually had the right answer before me.