Java 用什么代替 Class.newInstance()?

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时间:2020-08-12 02:20:40  来源:igfitidea点击:

What to use instead of Class.newInstance()?

javareflection

提问by Dmitri Nesteruk

Class.newInstance()is marked deprecated. Documentation does not suggest any alternatives. How are we meant to create instances now?

Class.newInstance()被标记为已弃用。文档不建议任何替代方案。我们现在打算如何创建实例?

采纳答案by Mureinik

To quote Java 9's javadoc:

引用Java 9 的 javadoc

The call

clazz.newInstance()

can be replaced by

clazz.getDeclaredConstructor().newInstance()

电话

clazz.newInstance()

可以替换为

clazz.getDeclaredConstructor().newInstance()

回答by Andy Turner

Class.getDeclaredConstructor(...).newInstance(...)

Refer to Google errorprone's documentation(for example) for a description of why.

有关原因的说明,请参阅Google errorprone 的文档(例如)。