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Commit f01f980

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Update how-to-get-an-enum-value-from-a-string-value-in-java.md
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‎contents/how-to-get-an-enum-value-from-a-string-value-in-java.md

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## 标题
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## 怎样得到指定名称的枚举类型对应的的字符串类型的枚举常量
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### 问题:
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假如说我有一个如下的枚举类
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假如说我有一个如下的枚举类
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```java
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public enum Blah {
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我是不是应该使用``Enum.valueOf()``这个方法?如果是的话,我又该怎么使用它?
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### 回答:
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是的,``Blah.valueOf("A")``将会给你你想要的``Blah.A``
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是的,``Blah.valueOf("A")``将会给你你想要的``Blah.A``
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不过需要注意的是,你输入的名字必须是绝对匹配的,像``Blah.valueOf("a")````Blah.valueOf("A ")``都会抛出``IllegalArgumentException``
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注:第一个表达式``a````A``不匹配
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第二个表达式``A ``后面多了一个空格

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