開始學java之格式化數字輸出

import java.util.Calendar;import java.util.Locale;public class hello {public static void main(String[] args){long n= 382112;System.out.format("%d%n",n);System.out.format("%08d%n", n);System.out.format("%+8d%n", n);System.out.format("%,8d%n", n);System.out.format("%+,8d%n", n);double pi=Math.PI;//擷取圓周率System.out.format("%f%n", pi);System.out.format("%.3f%n", pi);System.out.format("%10.3f%n", pi);System.out.format("%-10.3f%n", pi);System.out.format(Locale.FRANCE,"%-10.4f%n", pi);//用法語表示Calendar c=Calendar.getInstance();//擷取表示當前日期的對象System.out.format("%tB %te,%tY%n",c,c,c);System.out.format("%tm %te,%tY%n",c,c,c);System.out.format("%tl:%tM %tp%n",c,c,c);System.out.format("%tD%n",c);}}