can't find main(String[]) method in class: what type of error is this code example

Example 1: can't find main(String[]) method in class

class TapeDeckcTestDrive{
    public static void main(String[] args){
        TapeDeck t = new TapeDeck();
        t.canRecord = true;
        t.playTape();

        if (t.canRecord == true) {
            t.recordTape();
        }
    }
}

class TapeDeck {
    boolean canRecord = false;
    void playTape(){
        System.out.println("tape playing");
    }
    void recordTape(){
        System.out.println("tape recording");
    }
}

Example 2: error: can't find main(String[]) method in class: print

error: can't find main(String[]) method in class: print