These types are immutable, which means that when an integer object is created, its value cannot be changed.
这些类型是不可变的，就是说整数对象一旦创建，其值便不可更改。
A state object is immutable, that is, once it is created it cannot be changed without being destroyed and recreated.
状态对象是不变的，这就是说，一旦它被创建就不能被消出或者重建。
Immutable values are values that cannot be changed throughout the course of a program's execution.
不可变值是指在程序的整个执行过程中无法更改的值。
Immutable values are values that cannot be changed throughout the course of a program's execution.
不可变值是指在程序的整个执行过程中无法更改的值。
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