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问题描述
正如问题所说,在Java编程语言中对一个对象的引用使用了多少内存?
As the question says, how much memory is used for a reference to an Object in the Java Programming Language?
如果你有一个可靠的来源,请更好。
Please, if you have a trusted source is better.
非常感谢!
推荐答案它没有指定语言或JVM规范。但是,通常认为任何理智的实现在32位计算机上都是4个字节,在64位计算机上是4到8个字节(取决于压缩指针设置等)。
It's not specified by the language or JVM spec. However, it's generally accepted that any sane implementation will be 4 bytes on a 32-bit machines and between 4 and 8 bytes (depending on compressed pointer settings, etc.) on a 64-bit machine.
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Java:引用意味着多少内存?
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