£¨DecimalFormat£© JAVAÖÐÈ·¶¨Êý¾ÝµÄ¾«¶È
public class PointTest {
public static void main(String[] args) {
Point p1 = new Point(1,2);
Point p2 = new Point(1,20);
java.text.DecimalFormat df = new java.text.DecimalFormat("0.00");
double d = p2.distance(p1);
System.out.println(df.format(d));
}
}
Ïà¹ØÎĵµ£º
ÒòÊý¾Ý°²È«£¬ÐèÒª½«Éú³ÉµÄ±¨±íxls£¬Ìí¼Óˮӡ,ËùÒÔ×ÔÒÑÔÚjxlÖнøÐдúÂëÐ޸ġ£
ʹÓÃÀý×Ó
public class testJxl {
public static void main(String[] args) throws Exception {
OutputStream out = new FileOutputStream("./aaaa.xls"); // дÈëµ½FileInputStream
WritableWorkbook wwb= Workbook.createWorkbook(out);
......
0. ѧϰһÕÂÕÆÎÕÒ»ÕÅ£¬È»ºóÔÙ²»¶ÏµÄÓá£
1£® ÕÒһЩ±È½Ï¾µäµÄÀý×Ó£¬Ô´Âë(Ô´Âë°®ºÃÕß)£¬ ÿ¸öÀý×ӱȽϼ¯ÖÐÒ»ÖÖ±à³Ì˼Ïë¶øÉè¼ÆµÄ£¬±ÈÈçÔÚÎÒµÄʵ¼ùµ±ÖУ¬ÎÒÔø¾Ñ§Ï°¹ýÒ»¸öºÜ¾ µäµÄÀý×Ó¾ÍÊÇÓÃJavaʵÏÖµÄHotDraw£¨Ô´×ÔSmallTalk£©£¬Äã¿ÉÒÔÓÃrolemodel»òhotdrawÔÚ ËÑË÷ÒýÇæÉÏÕÒһϣ¬ÎҼDz»´óÇå ......
ÏÂÎÄÊÇÈÕ±¾ÈË·ÒëµÄÀÏÍâµÄÎÄÕ£¬ÈÕ±¾ÓÐÒ»°ïÈËÔÚ³´Ruby£¬ºÃÏñÊÇÈÕ±¾ÈË·¢Ã÷µÄ£¬Èç¹û¹Ø×¢µÄÈ˶àÁËÒ²ÓпÉÄÜÔÚÒ»¶¨µÄ·¶Î§ÄÚÁ÷ÐÐÆðÀ´¡£
´ËÎĽéÉÜÁËScooter framework¿ò¼Ü£¬ÊÇ»ùÓÚRuby on Rails ¹¹ÖþµÄ£¬ÊÇÒ»¸öSSH¿ª·¢¼¯³ÉµÄÌæ´úÆ·£¬Óõ½ÁËJAVAµÄһЩµ×²ã¼¼Êõ£¬ÓкܶàеĸÅÄ1.0°æ±¾Ô¤¼Æ½ñÄê6£¬7Ô·ݷ¢²¼¡£Ã²Ëƹ¦ÄܺÜÇ¿´ó£¬¸ÐÐ ......