• 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
  • Ron McLeod
  • Jeanne Boyarsky
Sheriffs:
  • Paul Clapham
Saloon Keepers:
  • Tim Holloway
  • Roland Mueller
Bartenders:

testing String as immutable

 
Ranch Hand
Posts: 133
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Is there a way to test that a String is immutable by attempting to change the actual string object in the constant pool?
 
Ranch Hand
Posts: 5415
1
Spring Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
mean ??
 
Ranch Hand
Posts: 56
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Is this code ok?
because "==" is shallow compare,so if string is mutable, the refence address will not be changed.
but this code provdes m1 create new ojbect.
 
I yam what I yam and that's all that I yam - the great philosopher Popeye. Tiny ad:
Clean our rivers and oceans from home
https://www.kickstarter.com/projects/paulwheaton/willow-feeders
reply
    Bookmark Topic Watch Topic
  • New Topic