import java.lang.reflect.Method;

public class Main {
	public static void main(String[] args) {
		Main main = new Main();
		for(Method m : main.getClass().getDeclaredMethods()){
			System.out.println(m.getName() + ": " + Number.class.isAssignableFrom(m.getReturnType()));
		}
	}

	public static int mInt(){ return 1; }
	
	public static Integer mInteger(){ return 1; }
	
	public static double mDouble(){ return 1.0; }
	
	public static Double mDoubleD(){ return 1.0; }
}