Java 8 Locale.getDefault() returning null

simpleuser :

We have a case where a PC running a Java 8 application using 1.8.0_092 is returning null from Locale.getDefault(). While dealing with this is trivial, I'm more worried that null is being returned, since the documentation for the method does not indicate that null is possible. We are not setting a locale from the java command line, and are not calling setDefault() anywhere.

What might be wrong in this installation that Locale.getDefault() would return null? Am I not reading Java documentation correctly?

freedev :

Looking at source code of JDK 1.8.0_092 I see that the value returned by Locale.getDefault() comes the field defaultLocale (Locale.java:2022).

private volatile static Locale defaultLocale = initDefault();

The initDefault() builds a key (LocaleKey) based on the variables language, region, script, country and variant, then search into a Cache object which is LocaleObjectCache<LocaleKey, Locale>.

Well, I don't want bother you with other details but in essence, this code is looking in a Map for an existing LocaleKey for the given environment so it is possible that such Locale does not exist.

Guess you like

Origin http://10.200.1.11:23101/article/api/json?id=462602&siteId=1

Java 8 Locale.getDefault() returning null

Java 8: ArrayDeque<>.poll returning null in parallel environment

getResourceAsStream returning null in Java 10

getEngineByName("JavaScript") returning null on Java 11

Java 8 Streams: collector returning filtered object

skuDetailsList returning null

getRowIndex always returning null

bundle.getParcelableArrayList() returning null

Getter returning null in different class

Returning typed collection from Scala 2.13 method to Java 8 caller

Returning default list if the list is empty using java 8 Streams?

Multiple null checks in Java 8

Path problem one resources = ResourceBundle.getBundle("config", Locale.getDefault());

Returning null in a function that should return an integer

Getting Initial Value for LiveData Always Returning Null

Null List is returning. How to solve this?

javax.mail.Message getSentDate returning null

Map with Double Array get method returning null

Collections.sort in java 8 is not working as java 6 while comparator returning 0

Check for null object and null value contained in object in Java 8 way

Spring repository method which are returning Java 8 stream doesn't close JDBC connection

Remove embedded null check with 'Optional' in Java 8

How to perform null check in java 8

java 8 optional to replace return null

Multiple null checks using Optional in Java 8

Java 8 Streams - Collecting Values that could be null

Null safe Collection as Stream in Java 8

Null safe Collection as Stream in Java 8

Returning from Java Optional ifPresent()

Returning a generic in java without casting it?