Java beginner - book code not working.. what a way to learn!

class Motorcycle {

      public static void main(String args[]) {
            Motorcycle m=new Motorcycle();
            m.make="Yamaha";
            m.colour="Yellow";
            System.out.println("Calling showAtts");
            m.showAtts();
            System.out.println("----------");
            System.out.println("Starting engine");
            m.startEngine();
            System.out.println("----------");
            System.out.println("Calling showAtts");
            m.showAtts();
            System.out.println("----------");
            System.out.println("Starting engine");
            m.startEngine();
      }

      String make;
      String colour;
      boolean engineState;

      void startEngine() {
            if(engineState==true) {
                  System.out.println("The engine is already on.");
            }
            else {
                  System.out.println("The engine is now on.");
                  engineState=true;
            }
      }

      void showAtts() {
            System.out.println("This motorcycle is a "+colour+" "+make);
            if(engineState==true) {
                  System.out.println("The engine is on.");
            }
            else {
                  System.out.println("The engine is off.");
            }
      }

}

This compiles ok, but doesn't run in an IE, or java.exe environment. What am I, or the book doing wrong?