java ¼ÆÊ±Æ÷
class NewTask extends java.util.TimerTask{
private String HOUR_MASK = "0";
private String MIN_MASK = "0";
private String SEC_MASK = "0";
private int hour;
private int min;
private int sec;
private String s;
private String m;
private String h;
public void run() {
sec+=1;
if(sec>59)
{
if(min==59)
{
//ÃëºÍ·Ö¶¼Îª59ʱ¼ÓһСʱ
hour+=1;
min=0;
}
else
{
//µ±·Ö²»Îª59ʱ
min+=1;
}
sec=0;
}
if(sec<10)
{
s=(SEC_MASK + sec);
}else
{
s=Integer.toString(sec);
}
if(min<10)
{
m=(MIN_MASK + min);
}else
{
m=Integer.toString(min);
Ïà¹ØÎĵµ£º
1.JavaÔÚÐéÄâ»úÉÏÔËÐÐ
JavaÔ´´úÂë²¢²»ÊDZ»±àÒë³ÉΪÆÕͨµÄ»úÆ÷´úÂë¡£¶øÊDZ»·Òë³ÉΪÐéÄâ»ú¿ÉÒÔÖ´ÐеĴúÂë¡£Ò»¸öJava½âÊÍÆ÷×îÖÕÖ´ÐÐÕâЩ´úÂë¡£ÕâÆäÖÐûÓÐÁ¬½ÓµÄ¹ý³Ì£»½âÊÍÔÚÐèÒªµÄʱºò¶¯Ì¬µÄ¼ÓÔØÒ»Ð©Àࣻ
2.JavaÊÇÍêÈ«ÃæÏò¶ÔÏóµÄ
JavaÊÇÒ»ÖÖÍêÈ«ÃæÏò¶ÔÏóµÄÓïÑÔ¡£ÕâÒâζ×ÅÄã¶ÔÈκÎÒ»¸öJava¶ÔÏóËù×öµÄ¶ ......
ʹÓÃjinvokeµ÷ÓÃwindowsAPI¡£jnaʹÓñȽÏÂé·³£¬ÐèҪдc´úÂëºÍ²ÎÊýת»»£¬jinvokeµÄʹÓþÍÏñjdkÖеİüÒ»Ñù¡£
¹ÙÍøÊ¹Óòο¼£ºhttp://www.jinvoke.com/calling-the-win32-api-from-java
Ò»¸öµ¯³ö¿òµÄÀý×Ó£¨ÕâÖÖ´úÂëÓÃÓÚµ÷ÓÃÈκÎdll£¬²»Ö»ÊÇwindowsµÄ£¬Ò²¿ÉÒÔÊÇ×Ô¼ºÐ´µÄdll£©
import com.jinvoke.JInvoke;
import com.jinvok ......
1. Ê×ÏÈString²»ÊôÓÚ8ÖÖ»ù±¾Êý¾ÝÀàÐÍ£¬StringÊÇÒ»¸ö¶ÔÏó¡£
¡¡¡¡ÒòΪ¶ÔÏóµÄĬÈÏÖµÊÇnull£¬ËùÒÔStringµÄĬÈÏÖµÒ²ÊÇnull£»µ«ËüÓÖÊÇÒ»ÖÖÌØÊâµÄ¶ÔÏó£¬ÓÐÆäËü¶ÔÏóûÓеÄÒ»Ð©ÌØÐÔ¡£
¡¡¡¡2. new String()ºÍnew String(“”)¶¼ÊÇÉêÃ÷Ò»¸öеĿÕ×Ö·û´®£¬Êǿմ®²»ÊÇnull£»
¡¡¡¡3. String str=”kvill”£»
......
ʹÓÃJava±àдTelnet¿Í»§¶Ë
2009-12-24
Kagula
»·¾³
[1]Eclipse3.4.2
[2]JDK 1.6.x
[3] jta26.jar
¿É´ÓÏÂÃæÍøÖ·ÏÂÔØÕâ¸öJar°ü
http://javassh.org/space/start
¸ÅÒª
ͨ¹ýÁ½¸öÀý×Ó£¬½éÉÜTelnet¿Í»§¶ËµÄ±àд
ÕýÎÄ
Àý×ÓÒ»£ºÏòOPhoneÐéÄâ»ú·¢ËÍÒ ......
String s = new String("abc");
String s1 = "abc";
String s2 = new String("abc");
System.out.println(s == s1);
System.out.println(s == s2);
S ......