A 64-bit runtime USES 64-bit Pointers (native address references), so the same Java object on 64-bit takes up more space than an object containing the same data on 32-bit.

位运行时使用64位指针(本机地址引用)，因此64位运行时中的相同对象会占用更多的空间。

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Cartographer is a simple, efficient object relational mapper engine. It provides rapid access to relational data using lightweight data and factory Java objects.

这是个简单、效的对象-关系映射工具。它使用轻量级数据和工厂对象实现对关系数据的快速访问。

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