日期、格式化输出的写法

import java.text.MessageFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Format {

	public static void main(String[] args) {
		String message = "{0}{1}{2}{3}{4}{5}{6}{7}{8}{9}";
		Object[] array = new Object[] {'A','B','C','D','E','F','G','H','I','J'};
		//format(格式化格式，对象)
		String value = MessageFormat.format(message, array);
		System.out.println(value);
		
		message = "{0,number,#.##} is a good number";
		array = new Object[] {new Double(13.1415926)};
		value = MessageFormat.format(message, array);
		System.out.println(value);
		
		//日期的格式化
		String strDate = "2008-10-09 10:11:30.100";
		String pat1 = "yyyy-MM-dd HH:mm:ss.SSS";
		String pat2 = "yyyy年MM月dd日 HH时mm分ss秒SSS毫秒";
		SimpleDateFormat dat1 = new SimpleDateFormat(pat1);
		SimpleDateFormat dat2 = new SimpleDateFormat(pat2);
		Date date = null;
		try {
			date = dat1.parse(strDate);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		System.out.println(dat2.format(date));
	}
}