Solution Review: Calculating the Area

class rightAngleTriangle {
    //Define the member variables, constructor and
    // relevant area method
    private double length;
    private double height;

    public rightAngleTriangle(int l, int h) {
        length = l;
        height = h;
    }

    public double area() {
        return (length * height / 2.0);
    }
}

class challenge_one {
    public static double test(rightAngleTriangle rt) {
        return rt.area();
    }
    public static void main( String args[] ) {
        rightAngleTriangle one= new rightAngleTriangle(3,5);
        System.out.println("Area of right Angle traingle:" + test(one));
    }
}