testnumberformat.java

疯狂Java讲义_源码(含Java设计模式CHM

import java.util.*;
import java.text.*;
/**
 * Description:
 * <br/>Copyright (C), 2005-2008, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [e-mail]
 * @version  1.0
 */
public class TestNumberFormat
{
	public static void main(String[] args) 
	{
		//需要被格式化的数字
		double db = 1234000.567;
		//创建四个Locale，分别代表中国、日本、德国、美国
		Locale[] locales = {Locale.CHINA, Locale.JAPAN, Locale.GERMAN, Locale.US};
		NumberFormat[] nf = new NumberFormat[12];
		//为上面四个Locale创建12个NumberFormat对象
		//每个Locale分别有通用格式器、百分比格式器、货币格式器
		for (int i = 0 ; i < locales.length ; i++)
		{
			nf[i * 3] = NumberFormat.getNumberInstance(locales[i]);
			nf[i * 3 + 1] = NumberFormat.getPercentInstance(locales[i]);
			nf[i * 3 + 2] = NumberFormat.getCurrencyInstance(locales[i]);
		}
		for (int i = 0 ; i < locales.length ; i++)
		{
			switch (i)
			{
				case 0:
					System.out.println("-------中国的格式--------");
					break;
				case 1:
					System.out.println("-------日本的格式--------");
					break;	
				case 2:
					System.out.println("-------德国的格式--------");
					break;
				case 3:
					System.out.println("-------美国的格式--------");
					break;					
			}
			System.out.println("通用数值格式：" + nf[i * 3].format(db));
			System.out.println("百分比数值格式：" + nf[i * 3 + 1].format(db));
			System.out.println("货币数值格式：" + nf[i * 3 + 2].format(db));

		}

	}
}