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I dont understand switch case statement

 
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final int a=1;
final int b;
b=2;
int x=0;
switch(x){
case a://ok
case b://Error

please explain how can it give error here.
 
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because that's the way compiler is designed. It won't consider a final variable as constant until not initialized during declaration. This is illustrated by your code.
 
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Eclipse IDE Windows XP Java
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Thanks Sandeep
 
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Case accepts only compile time constants.

To create a compile-time constants, it should be initialized at the time of declaration.

final int a=5; <-- This is a Compile time constant.

final int b;
b=10; <-- This is NOT a compile time constant(but a runtime constant)
 
Seetharaman Venkatasamy
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Thanks Deepak Bajoria
 
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