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final关键字 #2

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SillyBoy007 opened this issue Mar 25, 2018 · 0 comments

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SillyBoy007 commented Mar 25, 2018

final关键字

1.使用final定义的类不能有子类（太监类）
2.final定义的方法不能重写
3.final定义的变量成了常量(不可修改)
4.public static final 定义公共常量,全局常量

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