Method[] ms = c.getMethods();//c.getDeclaredMethods()

          for(int i = 0; i < ms .length ;i ++){

              //得到方法的返回值类型的类类型

              Class returnType = ms[i ].getReturnType();

             System. out.print(returnType .getName()+" ");

              //得到方法的名称

             System. out.print(ms [i ].getName()+"(");

              //获取参数类型--->得到的是参数列表的类型的类类型

              Class[] paramTypes = ms[i ].getParameterTypes();

              for (Class class1 : paramTypes) {

                 System. out.print(class1 .getName()+",");

             }

             System. out.println(")" );