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Update Java 基础.md #1233

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Expand Up @@ -57,6 +57,7 @@

boolean 只有两个值：true、false，可以使用 1 bit 来存储，但是具体大小没有明确规定。JVM 会在编译时期将 boolean 类型的数据转换为 int，使用 1 来表示 true，0 表示 false。JVM 支持 boolean 数组，但是是通过读写 byte 数组来实现的。

- [Why is Java's boolean primitive size not defined?] (https://stackoverflow.com/questions/1907318/why-is-javas-boolean-primitive-size-not-defined)
- [Primitive Data Types](https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html)
- [The Java® Virtual Machine Specification](https://docs.oracle.com/javase/specs/jvms/se8/jvms8.pdf)

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