[java] pb de getter

//classe1 :
public class calcul_chagra extends HttpServlet {
    
    float B2;

 public void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        
        String BB2 = request.getParameter("b2");
        setB2(Float.parseFloat(BB2));
[...]}

public float getB2() {
        return B2;
    }

    public void setB2(float B2) {
        this.B2 = B2;
    }
}

//Je souhaite récupéré la valeur de B2 dans une autre classe (classe2) du même package
//classe2 :
public class calcul1_chagra extends HttpServlet {

        float B2 = getB2();

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        
               double D5;
               D5 = 1000 * 30 * H8 / (Math.PI * B2);
}
}