Question

Possible Duplicates:
Does Java have a limit on the class name length?
Max name length of variable or method in Java
Java.Variable name length.

i stupid, i know, sorry…

i created this question Java.Variable name length,
but here very bad example…
so, i try create new question,
i have this class:

class Test
{
int i=10;

public static void main(String args[])
{
System.out.println(new Test());
}}

where variable name is not ‘i’ but ‘iiiiiii….’ with length 65535 chars(iiiiiiiiii…)

.class file have the same size that .java file.
Compile – success.

but, when i>65535chars – Exception: UTF8 representation for string "iiiiiiiiiiiiiiiiiiii..." is too long for the constant pool

bingo!

What conclusion can we do?

unlimited-length – not 100% correct.

But i find some information that its problem not java language – its some problems with classfile, so somebody know: Whose problem?

Answer 1

It appears that this question has been asked at least a couple of times (“Max name length of variable or method in Java“, “Does Java have a limit on the class name length?“).

The best answer seems to be that while the Java Language Specification does not place a limit on constant, class or variable names, the Java Virtual Machine Specification (specifically, the classfile format) imposes a limit of 65535 characters. See section 4.10 of the JVM Specification, last bullet item.