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Strings and numbers

 
Greenhorn
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Hi,
I am wondering on what theoretical basis this code:

produces the following output:

Why doesn't it produce:

?
 
author
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I believe addition has an associativity of from left to right -- so the expression is not a string addition until it encounters it first string to add, and then generates a string as a result.

Henry
 
Sheriff
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That's exactly right. (Uh, or maybe left. )

The + operator is syntactically left-associative, no matter whether it is later determined by type analysis to represent string concatenation or addition.


See JLS - 15.18.1.3 Examples of String Concatenation.
 
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