• 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 all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Liutauras Vilda
  • Tim Cooke
  • Jeanne Boyarsky
  • Bear Bibeault
Sheriffs:
  • Knute Snortum
  • paul wheaton
  • Devaka Cooray
Saloon Keepers:
  • Tim Moores
  • Stephan van Hulst
  • Ron McLeod
  • Piet Souris
  • Ganesh Patekar
Bartenders:
  • Tim Holloway
  • Carey Brown
  • salvin francis

Minor typo on page 249 (Java OCA 8 Programmer I Study Guide)

 
Greenhorn
Posts: 18
3
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
At the top of page 249, in the second paragraph, we can read :

The second method, eat(), is overridden in the subclass Eagle ... the return type of the method in Eagle must be a subclass of the return type of the method in Bird. In this example, the return type void is not a subclass of int ...


But, according to the example of page 248, the explanation should be :

In this example, the return type int is not a subclass of void ...


since the return type of eat() is int in Eagle, and void in Bird.

Is that correct?
 
author & internet detective
Posts: 39435
768
Eclipse IDE VI Editor Java
 
Sheriff
Posts: 11604
178
Hibernate jQuery Eclipse IDE Spring MySQL Database AngularJS Tomcat Server Chrome Java
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

Cedric Georges wrote:Is that correct?


Yes! The return types are switched. So you have spotted another minor errata item
 
If you live in a cold climate and on the grid, incandescent light can use less energy than LED. Tiny ad:
professionally read, modify and write PDF files from Java
https://products.aspose.com/pdf/java
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!