• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

Question on HF Servlets & JSP 2nd - The beer expert under Java 5

 
Greenhorn
Posts: 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Dear all

I am now reading the book of HF Servlet & JSP 2nd and found the following code:



And the BeerExpert class:



Well, the question is that, BeerSelect.java cannot be compiled with the following well-know warning:



Actually I know that, when I use the @SuppressWarnings("unchecked") statement above the "List<String> result = be.getBrands(c);", the code can be compiled nicely. However, I don't want to avoid that everytime when I meet this error. But the question is : how can I change to have it compiled?

Can anyone please help me to solve this problem?

Thank you very much in advance for all your help.
 
Bartender
Posts: 4116
72
Mac TypeScript Chrome Java Linux
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Your getBrands method in BeerExpert class may return a List of Strings. That will solve the problem (actually that's a warning not a compiler error), though you may be able to run the code without it

 
Ellery
Greenhorn
Posts: 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Thank you very much, it works now!

Javaranch is really a nice place
 
Sheriff
Posts: 67746
173
Mac Mac OS X IntelliJ IDE jQuery TypeScript Java iOS
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
"alucard", please check your private messages for an important administrative matter.
reply
    Bookmark Topic Watch Topic
  • New Topic