In this guide to Java enum with string values, learn to create enum using strings, iterate over all enum values, get enum value and to perform reverse lookup to find enum by string parameter. In thisguide to Javaenumwith string values, learn tocreate enum using strings, iterate over all e...
步骤一:创建一个包含枚举值的Java Enum 首先,你需要创建一个包含所需枚举值的Java Enum。假设我们要创建一个表示颜色的Enum,包含红色、绿色和蓝色三个枚举值。 publicenumColor{RED,GREEN,BLUE} 1. 2. 3. 4. 5. 步骤二:添加一个静态方法,用于根据String获取枚举值 为了根据String获取枚举值,我们需要在Enum中...
ENUM_VALUE_3}publicExampleEnumconvertStringToEnum(StringinputString){try{returnExampleEnum.valueOf(inputString);}catch(IllegalArgumentExceptione){// 处理转换失败的情况returnnull;}}publicbooleancompareEnumWithString(ExampleEnumenumValue,StringcompareString){if(enumValue!=null){returnenumValue.toString().equ...
String maleString = Gender.male.toString(); //Gender转化为String Gender maleGender = Gender.valueOf("male"); //String转化为Gender,male对应Gender枚举的常量名称 四、Enum与int的转化 int maleInt = Gender.male.ordinal(); //Enum转化为int,返回枚举常量的序数 java Enum指定值的应用(从数据转换为Enum...
}publicstaticvoidmain(String[] args) {for(EnumTest name : EnumTest.values()) { System.out.println(name+ " : " +name.getContext()); } System.out.println(EnumTest.DUANXZ.getDeclaringClass()); } } Java中枚举实现的分析: 示例: packagecom.dxz.enumtest;publicenumColor { ...
枚举enum 例子:enumSize{SMALL,MEDIUM,LARCE}; 声明:Sizes=Size.SMALL; 字符串String 拼接 //使用 + 拼接String expletive="Expletive"; String PC13="deleted"; String message=expletive + PC13;//如果其中有数字那么会将数字转为String再拼接 //如果是多个字符串拼接还可以使用joinStringa="a";Stringb="b"...
String, int, java.lang.String, com.javase.枚举类.Day$1); static {}; } 可以看到,一个枚举在经过编译器编译过后,变成了一个抽象类,它继承了java.lang.Enum;而枚举中定义的枚举常量,变成了相应的public static final属性,而且其类型就抽象类的类型,名字就是枚举常量的名字. 同时我们可以在Operator.class的...
属性约束例抽象类Abstract 或者 Base 开头BaseUserService枚举类Enum 作为后缀GenderEnum工具类Utils 作为后缀StringUtils异常类Exception 结尾RuntimeException接口实现类接口名+ ImplUserServiceImpl领域模型相关/DO/DTO/VO/DAO正例:UserDAO 反例:UserDo, UserDao设计模式相关类Builder,Factory 等当使用到设计模式时,需要使...
Stringenum="Hello World !!"; enum is a reserved keyword 1.2. Syntax to Create Enums As we know, generally we deal with four directions in daily life. Their names, angles and other properties are fixed. So, in programs, we can create an enum for them. The syntax to create anenumis ...
Returns a string representation of the object. (Inherited from Object) UnregisterFromRuntime() (Inherited from Object) ValueOf(Class, String) Returns the enum constant of the specified enum class with the specified name. Wait() Causes the current thread to wait until it is awakened, typi...