logo
down
shadow

Kotlin: Access nested enum class from java


Kotlin: Access nested enum class from java

Content Index :

Kotlin: Access nested enum class from java
Tag : java , By : Cosmin
Date : November 25 2020, 03:01 PM

wish helps you No there's no problem, just do MyStatus s = new MyStatus(MyStatus.Status.ERROR);
Here's what the compiler generates for your Enum:
public static enum Status {
  OK,
  ERROR;
}

Comments
No Comments Right Now !

Boards Message :
You Must Login Or Sign Up to Add Your Comments .

Share : facebook icon twitter icon

access outer class from inner nested enum


Tag : java , By : user185283
Date : March 29 2020, 07:55 AM
This might help you As Eric said, enums are implicitly static. To do what you want, add a method, callOuterMethod(OuterClass oc) that calls oc.outerMethod(data) to do what you want:
public enum InnerEnum {
    OPTION1("someData"),
    OPTION2("otherData");

    final String data;

    InnerEnum(String data) {
       this.data = data;             
    }

    void callOuterMethod(OuterClass oc) {
        oc.outerMethod(data);
    }
}

Access Kotlin enum from Java


Tag : java , By : Big Ant
Date : March 29 2020, 07:55 AM
wish helps you I have an enum defined in a Fragment companion object: , Just in case anyone still need this:
 Channel.TAG_FRIENDS.getValue()

Java - How to access Enum Class and Enum objects via strings?


Tag : java , By : Tink
Date : March 29 2020, 07:55 AM
wish of those help You can use if-else or switch statements to determine which enum to use, and then use valueOf():
String e = "Days";
String value = "Monday";

if (e.equalsIgnoreCase(Enumerations.Days.class.getSimpleName())) {
    System.out.println(Enumerations.Days.valueOf(value).getValue());
} else if (e.equalsIgnoreCase(Enumerations.Months.class.getSimpleName())) {
    System.out.println(Enumerations.Months.valueOf(value).getValue());
} else {
    System.out.println("Could not find enum");
}
MON
String e = "Days";
String value = "Monday";

String res = Arrays.stream(Enumerations.class.getDeclaredClasses())
        .filter(c -> c.getSimpleName().equalsIgnoreCase(e))
        .findFirst()
        .map(c -> {
            String result = null;
            try {
                Object o = c.getMethod("valueOf", String.class).invoke(null, value);
                result = (String) o.getClass().getMethod("getValue").invoke(o);
            } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e1) {
                e1.printStackTrace();
            }
            return result;
        }).orElse("Could not find");
System.out.println(res); //prints MON

Access enum value inside a method of enum class in Kotlin


Tag : development , By : lamberms
Date : March 29 2020, 07:55 AM
wish help you to fix your issue You can use this and this.ordinal which returns the ordinal of this enumeration constant
Also if you do this:
fun myFunc(): Any{
    val array = MyEnum.values()
    println(array[this.ordinal])
    println(this)
    return array[this.ordinal]
}

Kotlin nested enum class


Tag : kotlin , By : Thaweesak Suksuwan
Date : March 29 2020, 07:55 AM
To fix this issue You need to think about how these enums will be used by external code. In essence you are creating another namespace. The first namespace is the package, and the second is the class. That may become tedious for developers to type. It also requires the class to be typed in first for your IDE autocompletion to kick in.
Unless the package is saturated with too many definitions, or there are potential name conflicts, it might be better to define them outside of the class. Kotlin allows the enums to still be defined in the same file as the class if that helps keep you organized on the physical level.
Related Posts Related QUESTIONS :
  • Fully decompile java6 web application
  • Passing keycloak configuration parameters in the code rather than reading from application.properties
  • setDataSource() IO exception
  • Unexpected Output while retrieving Data from mongodb and displaying in a csv file?
  • Algorithm for searching a value in two arrays
  • How to avoid casting with generic return values?
  • Java/RegEx - Negation of pattern not working
  • How to split a string to non empty words if it might include a separator like tab on first place
  • Supplier<Sequence<String>> cannot be iterated more than once
  • Why there is only one thread can actually started in @PostConstruct method?
  • Manage CompletionStage inside of Netty handler
  • Url Problem while Developing on Localhost and deploy on Remote Virtual Server
  • How to identify the missing type id in Jackson error?
  • android data binding error: cannot find symbol
  • Spring Boot application with a jar dependency does not run after maven build
  • Spring Data JPA query , filter ? search engine ? JPQL?
  • Why LiveData returns null in ViewModel?
  • what this line of code mean....new URLClassLoader(new URL[0],getClass().getClassLoader());
  • Why do need to use new Random() instead of just Random Randomnum?
  • I want to access zk components from the java file
  • How do I cast FieldValue.serverTimestamp() to Kotlin/Java Date Class
  • Insertion Sort Double Array with User Input - JAVA
  • Creating 2 dimesional array with user input and find sum of specific columns
  • can not get Advertising ID Provider in android
  • Convert list of Objects to map of properties
  • How to represent an undirected weighted graph in java
  • Return values as array from collection
  • ByteBuddy generic method return cast to concrete type
  • ImageView hides the round corners of the parent
  • Is there a way to find setter method by its getter method or vice versa in a class?
  • Get aggregated list of properties from list of Objects(Java 8)
  • Unable to find a document in Mongodb where exact date match in java
  • UsernamePasswordAuthenticationFilter skips success handler
  • Use Java filter on stream with in a stream filter
  • Default Login not successful in spring boot 2.1.7
  • Adding key value pairs from a file to a Hashmap
  • Rub regex: matching a char except when after by another char
  • Convert Base64 String to String Array
  • Escape Unicode Character 'POPCORN' to HTML Entity
  • An empty JSON field which is a boolean/nullable field in Java model, is getting converted as null
  • Mongo java driver cannot find public constructor for interface
  • How to unit test writing a file to AWS Lambda output stream?
  • How to make a GitHub GraphQL API Call from Java
  • What's the difference between @ComponentScan and @Bean in a context configuration?
  • Expected class or package adding a view using a class
  • can be delete of a element in a static array be O(1)?
  • Instance variable heap or stack ? ( with specific example)
  • Assert progress of ProgressBar in Espresso test
  • How to detect if gson.fromjson() has excess elements
  • I cant generate the proper code to select the a specific filter on a BI dashboard I am working on
  • How to Inject Dependencies into a Servlet Filter with Spring Boot Filter Registration Bean?
  • Thrift types as a Generic
  • Effective algorithm to random 4 unique integers less than a big max such as 100_000
  • Combining or and negation in Java regex?
  • Unable to instantiate default tuplizer Exception
  • Multi-tenant migration to work with quarkus
  • Ignite persisting a Set: Cannot find metadata for object with compact footer
  • Maven cannot resolve Jacob dependency using eclipse
  • testcontainers oracle database container starts before database user is created
  • Launching two spring boot apps in integration test
  • shadow
    Privacy Policy - Terms - Contact Us © scrbit.com