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Declaring and intialization of variable inside a loop in java  RSS feed

 
Greenhorn
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In above code, local variable y is in scope for the block of do while statement. This is valid for all the iterations of the loop. So why does java not throw an error "Variable Y is already defined" for subsequent iterations after the first one, as we are redeclaring the same variable in each iteration?
 
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Because it isn't already defined when you do the second iteration. Sure, it was defined earlier but then it went out of scope.

Also... you're asking about a compiler error. You don't get compiler errors when you run Java code.
 
It is sorta covered in the JavaRanch Style Guide.
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