Java is 'pass by value'

昨天被Objective-C的pass by reference、pass by value折騰半天，才發現自己把Java的用法亂套在Objective-C  囧....

紀錄Objective-C之前，先轉錄Java方面正確的說明

Parameter passing in Java - by reference or by value?

Java 只有傳值，沒有傳址