Java中的java.util.Locale.Builder类的setLanguageTag(String)方法用于将此Locale.Builder重置为指定的IETF BCP 47语言标记。这意味着此方法将重置Locale.Builder实例的当前状态以匹配提供的语言标记并返回它。
用法:
public Locale.Builder setLanguageTag(String languageTag)
参数：此方法接受languageTag作为参数，这是要设置为此Locale.Builder实例的String。
返回值：此方法返回一个Locale.Builder实例，该实例是将此Locale.Builder设置为指定语言标记的状态。
异常：此方法引发以下异常：
IllformedLocaleException：如果指定的languageTag具有任何格式错误的字段
程序1:
// Java program to demonstrate
// the above method
import java.util.*;
import java.util.Locale.*;
public class LocaleBuilderDemo {
public static void main(String[] args)
{
// Creating a new Locale.Builder
Locale.Builder localeBuilder
= new Builder();
// Displaying Locale.Builder
System.out.println("LocaleBuilder:"
+ localeBuilder);
// setting the languageTag
// of Locale.Builder
String languageTag = "FRENCH";
System.out.println("Setting the language:"
+ languageTag);
localeBuilder
= localeBuilder
.setLanguageTag(languageTag);
// Displaying Locale.Builder
System.out.println("Updated LocaleBuilder:"
+ localeBuilder);
}
}
输出：
LocaleBuilder:java.util.Locale$Builder@232204a1
Setting the language:FRENCH
Updated LocaleBuilder:java.util.Locale$Builder@232204a1
程序2:
// Java program to demonstrate
// the above method
import java.util.*;
import java.util.Locale.*;
public class LocaleBuilderDemo {
public static void main(String[] args)
{
// Creating a new Locale.Builder
Locale.Builder localeBuilder
= new Builder();
// Displaying Locale.Builder
System.out.println("LocaleBuilder:"
+ localeBuilder);
// setting the languageTag
// of Locale.Builder
String languageTag = "asdasf@!vsd#";
System.out.println("Setting the languageTag:"
+ languageTag);
try {
localeBuilder
= localeBuilder
.setLanguageTag(languageTag);
// Displaying Locale.Builder
System.out.println("Updated LocaleBuilder:"
+ localeBuilder);
}
catch (Exception e) {
System.out.println(e);
}
}
}
输出：
LocaleBuilder:java.util.Locale$Builder@232204a1
Setting the languageTag:asdasf@!vsd#
java.util.IllformedLocaleException:Invalid subtag:asdasf@!vsd# [at index 0]
转播
