Why we need to set the variable private / public?

Posted by Tattat on Stack Overflow See other posts from Stack Overflow or by Tattat
Published on 2010-04-06T09:38:41Z Indexed on 2010/04/06 9:43 UTC
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Why don't make all variable private? All the variables must give a getter, setter to modify/read. Why leave the "public" keyword here? Except for convenient, any another reason for that?

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