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Greenhorn
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I want to ask Is int e# illegal identifier name ? Why.
 
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Welcome to JavaRanch!

Have you tried this? Did it work?

See JLS - 3.8 Identifiers.
 
Greenhorn
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Rules for Legal Identifiers

Definition: Letter = (A-Z, a-z or '$' or '_' )
Definition: Digit = ( 0 -9 )


An Identifier:
Must begin with a letter, '$', or "_".
After the first char, any char that is a letter (including '$' or '_') or digit may be used.
Cannot be a reserved word (aka keyword).
No spaces are allowed in the identifier.
Cannot have a Java operator symbol (because not a letter or digit).
No limit to the number of letters & digits (0 - 9).
 
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