Java 中 Scanner useLocale()方法，示例
原文:https://www . geesforgeks . org/scanner-uselocale-method-in-Java-with-examples/
Java . util . scanner类的 useLocale() 方法将该扫描仪的区域设置为指定的区域设置。
语法:
public Scanner useLocale(Locale locale)
参数:该函数接受一个强制参数区域设置，该参数指定了一个指定要使用的区域设置的字符串。
返回值:该功能返回该改装扫描仪。
例外:如果基数小于字符。最小基数或大于字符。MAX_RADIX ，则抛出 IllegalArgumentException 。
以下程序说明了上述功能:
程序 1:
// Java program to illustrate the
// Scanner useLocale() method in Java
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
throws Exception
{
String s = "Geeksforgeeks has Scanner Class Methods";
// create a new scanner
// with the specified String Object
Scanner scanner = new Scanner(s);
// print a line of the scanner
System.out.println("Scanner String: \n"
+ scanner.nextLine());
// display the previous locale
System.out.println("Current Lcoale: "
+ scanner.locale());
// change the locale of the scanner
scanner.useLocale(Locale.ENGLISH);
System.out.println("Changing Locale to ENGLISH");
// display the new locale
System.out.println("Updated Locale: "
+ scanner.locale());
// close the scanner
scanner.close();
}
}
输出:
Scanner String:
Geeksforgeeks has Scanner Class Methods
Current Lcoale: en_US
Changing Locale to ENGLISH
Updated Locale: en
程序二:
// Java program to illustrate the
// Scanner useLocale() method in Java
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
throws Exception
{
String s = "Geeksforgeeks 2018";
// create a new scanner
// with the specified String Object
Scanner scanner = new Scanner(s);
// print a line of the scanner
System.out.println("Scanner String: \n"
+ scanner.nextLine());
// display the previous locale
System.out.println("Current Lcoale: "
+ scanner.locale());
// change the locale of the scanner
scanner.useLocale(Locale.FRENCH);
System.out.println("Changing Locale to FRENCH");
// display the new locale
System.out.println("Updated Locale: "
+ scanner.locale());
// close the scanner
scanner.close();
}
}
输出:
Scanner String:
Geeksforgeeks 2018
Current Lcoale: en_US
Changing Locale to FRENCH
Updated Locale: fr
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