public enum RetentionPolicy extends Enum<RetentionPolicy>
Enum Constant and Description |
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CLASS
注释将由编译器记录在类文件中,但VM不需要在运行时保留。
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RUNTIME
注释将由编译器记录在类文件中,并由VM在运行时保留,因此可以反射读取。
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SOURCE
注释将被编译器丢弃。
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Modifier and Type | Method and Description |
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static RetentionPolicy |
valueOf(String name)
以指定的名称返回此类型的枚举常量。
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static RetentionPolicy[] |
values()
按照它们声明的顺序返回一个包含此枚举类型常量的数组。
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public static final RetentionPolicy SOURCE
public static final RetentionPolicy CLASS
public static final RetentionPolicy RUNTIME
AnnotatedElement
public static RetentionPolicy[] values()
for (RetentionPolicy c : RetentionPolicy.values())
System.out.println(c);
public static RetentionPolicy valueOf(String name)
name
- 要返回的枚举常量的名称。
IllegalArgumentException
- 如果此枚举类型没有指定名称的常量
NullPointerException
- if the argument is null
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