Package de.xima.fc.utils

Class XLanguageUtils

java.lang.Object

de.xima.fc.utils.XLanguageUtils

public class XLanguageUtils
extends Object

Utility class for providing default languages

Author:

XIMA MEDIA GmbH

Method Summary

Modifier and Type	Method	Description
static Map<String,String>	getAvailableDefaultLanguages(Locale displayLocale)	Returns a map of language display names and their IETF BCP 47 language tag
static boolean	isMethodImplementedBy(Class<?> target, Object instance, String methodName, Class<?>... params)	Checks whether the given method is implemented by the given target class.
static Integer	parseIntOrNull(String value)	Parses the value as an integer, if possible, or returns null if it cannot be parsed.
static Long	parseLongOrNull(String value)	Parses the value as a long, if possible, or returns null if it cannot be parsed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getAvailableDefaultLanguages

public static Map<String,String> getAvailableDefaultLanguages(Locale displayLocale)

Returns a map of language display names and their IETF BCP 47 language tag

Parameters:

displayLocale - Locale to be used for displaying the languages

Returns:

Map of language display names and their well-formed IETF BCP 47 language tag

isMethodImplementedBy

public static boolean isMethodImplementedBy(Class<?> target,
                                            Object instance,
                                            String methodName,
                                            Class<?>... params)

Checks whether the given method is implemented by the given target class. Returns false when implemented by a subclass. For example:

     interface A {
         default void foo() {}
         default void bar() {}
     }
     class B implements A {
       public void foo() {}
     }

     // false, because foo is implemented by B
     isMethodImplementedBy(A.class, new B(), "foo")

     // true, because B inherits the implementation of bar from A
     isMethodImplementedBy(A.class, new B(), "bar")
 

Parameters:

target - The target class.

instance - The instance to check.

methodName - The name of the method.

params - The parameter types of the method.

Returns:

true when the method is implemented by the target class.

parseIntOrNull

public static Integer parseIntOrNull(String value)

Parses the value as an integer, if possible, or returns null if it cannot be parsed.

Parameters:

value - Value to parse.

Returns:

The integer represented by the string, or null when the string does not represent a valid integer.

parseLongOrNull

public static Long parseLongOrNull(String value)

Parses the value as a long, if possible, or returns null if it cannot be parsed.

Parameters:

value - Value to parse.

Returns:

The long represented by the string, or null when the string does not represent a valid long.