ÕûÀíÓÃJavaʵÏÖÊý×Öת»¯³É×Ö·û´®×ó±ß×Ô¶¯²¹Áã·½·¨
Java ÖиøÊý×Ö×ó±ß²¹0 £¨1£©·½·¨Ò»
import java.text.NumberFormat; public class NumberFormatTest { public static void main(String[] args) {
//´ý²âÊÔÊý¾Ý
int i = 1;
//µÃµ½Ò»¸öNumberFormatµÄʵÀý
NumberFormat nf = NumberFormat.getInstance();
//ÉèÖÃÊÇ·ñʹÓ÷Ö×é
nf.setGroupingUsed(false);
//ÉèÖÃ×î´óÕûÊýλÊý
nf.setMaximumIntegerDigits(4);
//ÉèÖÃ×îСÕûÊýλÊý
nf.setMinimumIntegerDigits(4);
//Êä³ö²âÊÔÓï¾ä
System.out.println(nf.format(i));
}
} À´Ô´£ºhttp://blog.csdn.net/xiaohunzhang/archive/2008/08/07/2782592.aspx £¨2£©·½·¨¶þ£¨¸öÈËÒÔΪ¸Ã·½·¨¼òµ¥ÓÐЧ£¬µ«¾ÊÔÑéËÆºõString.format()º¯ÊýÓÐÎÊÌ⣩ public class TestStringFormat {
public static void main(String[] args) {
int youNumber = 1;
// 0 ´ú±íÇ°Ãæ²¹³ä0
// 4 ´ú±í³¤¶ÈΪ4
// d ´ú±í²ÎÊýΪÕýÊýÐÍ
String str = String.format("%04d", youNumber);
System.out.println(str); // 0001
}
}
À´Ô´£ºhttp://liuwei1981.javaeye.c
Ïà¹ØÎĵµ£º
Javaѧϰ´ÓÈëÃŵ½¾«Í¨
Ò»¡¢ JDK (Java Development Kit)
JDKÊÇÕû¸öJavaµÄºËÐÄ£¬°üÀ¨ÁËJavaÔËÐл·¾³£¨Java Runtime Envirnment£©£¬Ò»¶ÑJava¹¤¾ßºÍJava»ù´¡µÄÀà¿â(rt.jar)¡£²»ÂÛʲôJavaÓ¦Ó÷þÎñÆ÷ʵÖʶ¼ÊÇÄÚÖÃÁËij¸ö°æ±¾µÄJDK¡£Òò´ËÕÆÎÕJDKÊÇѧºÃJavaµÄµÚÒ»²½¡£×îÖ÷Á÷µÄJ ......
repaint ¶Ô×é¼þ½øÐÐÖØ»æ£¬±ÈÈçÒ»¸öpanel£¬µ±ÄãremoveµôpanelÀïÃæµÄÒ»¸ö×é¼þʱ£¬Äã±ØÐëµ÷ÓÃrepaint·½·¨²ÅÄܶÔpanel½øÐÐÖØ»æ£¬½øÐÐˢУ¬ÄãÏëҪɾ³ýµÄ×é¼þ²ÅÄÜÔÚ½çÃæÉÏÏûʧ¡£
revalidate ¶Ô×é¼þ½øÐÐÑéÖ¤£¬±ÈÈçÒ»¸öpanel£¬µ±ÄãremoveµôpanelÀïÃæµÄÒ»¸ö×é¼þʱ£¬µ±Äãµ÷ÓÃrevalidate·½·¨ºó£¬panelµÄ²¼ ......
synchronizedµÄÒ»¸ö¼òµ¥Àý×Ó
public class TextThread
{
/**
* @param args
*/
public static void main(String[] args)
{
// TODO ×Ô¶¯Éú³É·½·¨´æ¸ù
TxtThread tt = new TxtThread();
  ......
½üÀ´ÔÚ×öJAVAʱÓõ½ÎļþµÄѹËõÓë½âѹ,ÆäÖÐÅöµ½Á˸öÎÊÌâ:ÏÈÓÃJAVA´úÂë´ò°üºÃµÄJARÎļþ¾¹ýC#µÄzlib´¦Àíºó,¾¹È»²»ÄÜÐÞ¸Ä!
ÍøÉÏÕÒÁ˺ÃЩ´úÂë¶¼²»¿ÉÐÐ,JAVA´´½¨µÄJAR°üÔÚÐ޸ĵÄʱºò¿ÉÒÔ·¢ÏÖ¿ªÊ¼Óиö·¾¶·û'/'»ò'\',ËäÈ»ÔÚ´Ë¿ÉÒÔÐÞ¸ÄJARÎļþ,µ«ÊÇ×ܾõµÃÒþ»¼³öÔÚÕâ,ºóÀ´µÄÊÂÊ ......
/*Decryptor*/
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
/**
* Decrypt the password get form Xpress GUI
*/
public class Decryptor{
//¼ÓÃÜ
  ......