class StaticClass {
  static a fun1(b, c) {
   ////

  }
  static b fun2(c, d) {
   ////
  }
}

class funMap {
  Object call(String func, Object... args) {
     if (func.equals("fun1")) {
        return (a) (StaticClass.fun1((b)args[0], (c)args[1]));
     } else if (func.equals("fun2")) {
        return (a) (StaticClass.fun2((c)args[0], (d)args[1]));
     }
  }
}

class funCaller {
   a method(b b1) {
     c c1;
     // ///
     funMap f = new funMap();
     f.call("fun1", b1 ,c1);
  }
}