问题描述
班级?
What is the difference between set(String)
and setValue(String)
in the SimpleStringProperty
class?
我知道 set(String)
派生自,但这让我更加奇怪,为什么还有 setValue(String)
?
推荐答案
set / setValue
和 get / getValue
存在方法对以使对象属性与原始类型属性,如 BooleanProperty
或 DoubleProperty
:
set/setValue
and get/getValue
methods pairs exist to align Object properties with primitive types properties like BooleanProperty
or DoubleProperty
:
BooleanProperty :
BooleanProperty:
void set(boolean value)
void setValue(java.lang.Boolean v)
DoubleProperty:
DoubleProperty:
void set(double value)
void setValue(java.lang.Number v)
In这些属性类 ___ Value
方法在指导我的同时使用对应的类型对象thods使用原始类型。
In these property classes ___Value
methods work with corresponding to type objects while direct methods work with primitive types.
查看代码,您可能会发现逻辑上有点不同。例如, DoubleProperty #setValue(null)
等于 DoubleProperty #set(0.0)
(这是绑定所需的) )。所以我一般建议使用set / get方法并将setValue / getValue留给绑定需求,因为它们可能包含额外的逻辑。
Looking in the code you may find a bit of a difference in the logic. For example, DoubleProperty#setValue(null)
is equal to DoubleProperty#set(0.0)
(which was required by binding). So generally I'd advise to use set/get methods and leave setValue/getValue to binding needs as they may incorporate additional logic.
对于Object / String属性,没有set和setValue方法之间的区别。
For Object/String properties there is no difference between set and setValue methods.
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