• 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
  • Tim Cooke
  • paul wheaton
  • Paul Clapham
  • Ron McLeod
Sheriffs:
  • Jeanne Boyarsky
  • Liutauras Vilda
Saloon Keepers:
  • Tim Holloway
  • Carey Brown
  • Roland Mueller
  • Piet Souris
Bartenders:

Doubt Regarding wrapper Class.

 
Greenhorn
Posts: 9
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Question 9

A) Compilation error, toString() is not avialable for Byte.
B) Prints "True".
C) Prints "False".


Answer given is - False...

Can any body explain Please...
 
ranger
Posts: 17347
11
Mac IntelliJ IDE Spring
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
The question is actually about Strings and not a wrapper class.

Since it is using the == instead of the .equals() method, it is checking for objects being the same, pointing to the same point in memory. Not the string's value.

So when you call toString it creates a new String object, so there are two different String objects created in the if statement, and they are not the same, they are not pointing to the same object in memory.

Mark
 
reply
    Bookmark Topic Watch Topic
  • New Topic