• 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

Exam Lab question on Thread

 
Ranch Hand
Posts: 30
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator


For the above code the answer is always Builder Passed,

What I don't understand is by this time the mt2 thread can lock on sb1 right and hence there should be no output right?.

Appreciate your reply.

Thanks.
 
Ranch Hand
Posts: 537
Eclipse IDE Python Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Even if it is synchronized with the object of sb1, stringbuilder methods are not synchronized, so the main thread can access the non synchronized append method of sb1. This does not hold true for stringbuffer sbf as the methods of stringbuffer are synchronized.
 
Thiyagarajan Kamala
Ranch Hand
Posts: 30
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I got it Thanks nitish .
 
Ranch Hand
Posts: 808
1
Android Eclipse IDE Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Please, have a look:
https://coderanch.com/forums/posts/list/40/457638
I think that I cleared that question well.
 
I'm not dead! I feel happy! I'd like to go for a walk! I'll even read a tiny ad:
a bit of art, as a gift, that will fit in a stocking
https://gardener-gift.com
reply
    Bookmark Topic Watch Topic
  • New Topic