Java--对象与类

不要编写返回引用可变对象的访问器方法。

Java--对象与类

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Java--对象与类

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Java--对象与类

传引用：相当于别名。

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Java--对象与类

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Java--对象与类

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Java--对象与类

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Java--对象与类

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Java--对象与类

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Java--对象与类

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