Malinda :
In Java, variable names start with a letter, currency character ($
) etc. but not with number, :
, or .
Simple question: why is that?
Why doesn't the compiler allow to have variable declarations such as
int 7dfs;
GhostCat salutes Monica C. :
Because the Java Language specification says so:
IdentifierChars:
JavaLetter {JavaLetterOrDigit}
So - yes, an identifier must start with a letter; it can't start with a digit.
The main reasons behind that:
- it is simply what most people expect
- it makes parsing source code (much) easier when you restrict the "layout" of identifiers; for example it reduces the possible ambiguities between literals and variable names.
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