getsetlocale.java

java小例程3。多个小例程

import java.text.*;
import java.util.*;

/** Change the default locale */
public class GetSetLocale {
	public static void main(String[] args) {
		// 得到并且打印出缺省本地国家代码设置。
		Locale l = Locale.getDefault();
		System.out.println("Today's Locale is " + l);
          // 根据命令行参数设置本地缺省国家代码
		switch (args.length) {
		case 0:
			Locale.setDefault(Locale.TRADITIONAL_CHINESE );
			break;
		case 1:
			throw new IllegalArgumentException();
		case 2:
			Locale.setDefault(new Locale(args[0], args[1]));
			break;
		default:
			System.out.println("Usage: SetLocale [language [country]]");
		}
           // 根据设定的缺省国家代码设置日期和数字显示的格式
		DateFormat df = DateFormat.getInstance();
		NumberFormat nf = NumberFormat.getInstance();

                System.out.println("Locale set to " +
                                    Locale.getDefault().getDisplayCountry() +
                                    Locale.getDefault().getDisplayLanguage());
		System.out.println(df.format(new Date()));
		System.out.println(nf.format(123.4567));
	}
}