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java变量、数据类型和运算符-3

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一,数据类型 1,基础数据类型　　整型　　byte 　　short 　　int 　　long 　　浮点型　　float 　　double 　　字符型　　char 　　布尔类型　　boolean 2,引用类型　　String 　　字符串型二,变量 1,声明变量的格式: 数据类型变量名=...

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