Now that we have explored Java Enum with values, let’s look at the built-in methods offered by Java Enum and how we can use them. Java Enum comes equipped with several useful methods likevalues(),valueOf(),name(), andordinal(), among others. These methods provide functionalities that m...
Learn to createJava enumwhereeachenumconstant may contain multiple values. We may use any of the values of theenumconstant in our application code, and we should be able to get the enum constant from any of the values assigned to it. 1. How to Create Enum with Multiple Values The syntax...
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...
values() 返回枚举类的所有常量; ordinal() 返回枚举常量的序号 valueOf(String name) 返回名为name的枚举常量,如果存在。 //演示 values(), ordinal() 和 valueOf() 方法enumColor { RED, GREEN, BLUE; }publicclassTest {publicstaticvoidmain(String[] args) { Color arr[]=Color.values();for(Color ...
简介: Java 获取Enum枚举中的值,以列表方式返回 有时候,有一些下拉选择器的数据项,我们采取了枚举的方式简单记录,但是里面的东西多,前端不想写死,需要提供接口返回。 示例: 枚举 /** * @Author: JCccc * @Description: * @Date: Create in 10:51 2021/1/25 */ public enum EducateStatusEnum { /** ...
自Kotlin 1.1 起,可以使用 enumValues<T>() 和enumValueOf<T>() 函数以泛型的方式访问枚举类中的常量。 1.4.1、访问枚举变量属性 例: fun main(args: Array<String>) { println("name = " + Color.RED.name + "\tordinal = " + Color.RED.ordinal) println("name = " + Color.WHITE.name + "...
Returns the enum constant of the specified enum type with the specified name. Methods declared in class java.lang.Object getClass,notify,notifyAll,wait,wait,wait Constructor Detail Enum protected Enum(Stringname, int ordinal) Sole constructor. Programmers cannot invoke this constructor. It is fo...
sprintf 是个变参函数，定义如下： int sprintf( char *buffer, const char *format [, argument] ....
V- the type of mapped values All Implemented Interfaces: Serializable,Cloneable,Map<K,V> public classEnumMap<K extendsEnum<K>,V>extendsAbstractMap<K,V> implementsSerializable,Cloneable A specializedMapimplementation for use with enum type keys. All of the keys in an enum map must come from a...
DataEnum allows you to work withalgebraic data typesin Java. You can think of it as an enum where every individual value can have different data associated with it. What problem does it solve? The idea of algebraic data types is not new and already exists in many other programming languages...