Win a copy of Murach's MySQL this week in the JDBC and Relational Databases forum!
  • 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

Compile Time constant??

 
Ranch Hand
Posts: 509
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
What is a Compile time constant??

What is the difference between a,b??
final int a=1;
final int b;
b=2;
int x=0;
switch(x)
case a:
case b://complier error.
 
Ranch Hand
Posts: 178
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Abhi,
Compile time constant is a constant value that the compiler assigns to the variable during compile time itself.

final int a=1; -- This is a compile time constant because during compile time itself, a value of 1 is assigned to 'a', and since it is final, it cannot be changed further.

final int b -- During compile time, this statement only declares 'b', no value is assigned. During runtime only, the value 2 is given to 'b'.

switch-cases expect compile time constants in the case statements. But in your code, since you have used a non-compile time constant for case statement, the compiler error is given out.
 
Abhi vijay
Ranch Hand
Posts: 509
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Thanks, a lot,Rekha.
 
Consider Paul's rocket mass heater.
reply
    Bookmark Topic Watch Topic
  • New Topic