问Enum.valueOf(String)方法从何而来?EN请注意,对于特定的枚举类型T,可以使用在该枚举上隐式声明的公共静态T字符串(ValueOf)方法,而不是使用此方法来从名称映射到相应的枚举常量。枚举类型的所有常量都可以通过调用该类型的隐式公共静态T[] values()方法来获得。从上面代码块中得知,
这个时候,想起来枚举类有一个valueOf方法的,传入的参数是枚举常量的变量名,返回这个枚举常量,然后debug,发现枚举类内部调用了java.lang.Enum类的这个方法: public static> T valueOf(ClassenumType, String name) { T result = enumType.enumConstantDirectory().get(name); if (result != null) return result...
Now, let's say I want to display the string value of enum in some control. For that, I will have to convert Enum value to string. For example, I want to add all enum string values to a DropDownList. The following code loops through the enumeration and adds string values to it. Here...
这通常可以通过重写valueOf方法来实现。下面是一个简单的示例,展示了如何根据字符串返回对应的枚举值。 示例:枚举与字符串映射 publicenumColor{RED,GREEN,BLUE;publicstaticColorfromString(Stringcolor){for(Colorc:Color.values()){if(c.name().equalsIgnoreCase(color)){returnc;}}thrownewIllegalArgumentException...
}; _Alloc_hider _M_dataplus; /** * 真实数据的长度,等价于前面介绍的STL中的size */ size_type _M_string_length; enum { _S_local_capacity = 15 / sizeof(_CharT) }; /** * 这里有个小技巧,用了union * 因为使用_M_local_buf时候不需要关注_M_allocated_capacity * 使用_M_allocated_capaci...
Adding item to the static class of List Adding Items to enum ! Adding Line Break To DataTable Row Adding List<string> to ListView adding needed .dll to my publish adding object to list and adding properties at same time Adding path to DLLImport Adding query parameter to NpgsqlCommand results...
static string GetStringFromEnum(Enum enumvalue) { FieldInfo finfo = enumvalue.GetType().GetField(enumvalue.ToString()); object[] cAttr = finfo.GetCustomAttributes(typeof(EnumItemDescriptionAttribute), true); if (cAttr.Length > 0) {
privateenumStrategy{/*** Bytecode generator, calling into {@link java.lang.StringBuilder}.*/BC_...
ValueOf(Char[]) Returns the string representation of the char array argument. C# 複製 [Android.Runtime.Register("valueOf", "([C)Ljava/lang/String;", "")] public static string ValueOf (char[]? data); Parameters data Char[] the character array. Returns String a String that ...
int->enum:enumTypeb=enumType.values()[i]; enum<->String enum -> String: enumType.name() String -> enum: enumType.valueOf(name); --- http://stackoverflow.com/questions/604424/java-enum-converting-string-to-enum 有时间整理测试一下这个帖子中的...