messageformatexam3.java

JavaWeb高级特性书中源代码

import java.text.DateFormat;
import java.text.NumberFormat;
import java.text.MessageFormat;
import java.text.Format;
import java.util.Locale;
import java.util.Date;
public class MessageFormatExam3
{
	public static void main(String args[]) throws Exception
	{
		String pattern = "At {0} on {1}, {2} destroyed {3} houses and "
			+ "caused {4} of damage.";
		MessageFormat msgFmt = new MessageFormat(pattern);
		String datetimeString = "Jul 3, 1998 12:30 PM";
		Date date = DateFormat.getDateTimeInstance(DateFormat.MEDIUM,
			DateFormat.SHORT,Locale.US).parse(datetimeString);
		String event = "a hurricance";
		Object []msgArgs = {date,date,event,new Integer(99),new Double(1E7)};
		msgFmt.setFormatByArgumentIndex(0, 
				 DateFormat.getTimeInstance(DateFormat.SHORT));
		msgFmt.setFormatByArgumentIndex(1, DateFormat.getDateInstance());
		msgFmt.setFormatByArgumentIndex(4,
				NumberFormat.getCurrencyInstance());	
		/*	Format[] argsFmt = {
				DateFormat.getTimeInstance(DateFormat.SHORT), 
				DateFormat.getDateInstance(), 
				null, 
				null, 
				NumberFormat.getCurrencyInstance()
		};
		msgFmt.setFormatsByArgumentIndex(argsFmt); 		*/
		String result = msgFmt.format(msgArgs);
		System.out.println(result);
	}
}