JavaÖÐÈÃCPU±£³ÖÔÚÒ»ÌõÖ±ÏßÉÏ
/**
* @param args
*/
public static void main(String[] args) {
long time1 = System.currentTimeMillis();
long time2 = System.currentTimeMillis();
while (true) {
while ((time1 - time2) < 30)
;
try {
Thread.sleep(10);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
Ïà¹ØÎĵµ£º
´´½¨Ò»¸öÀàµÄʵÀýʱ£¬
1.»áΪËüÒÔ¼°ËüµÄËùÓи¸ÀàµÄʵÀý±äÁ¿·ÖÅäÄÚ´æ¿Õ¼ä£¬Èç¹û·ÖÅä¿Õ¼ä³É¹¦£¬ÔòËùÓÐʵÀý±äÁ¿¶¼»á³õʼ»¯ÎªÄ¬ÈÏÖµ0¡¢false¡¢null
2.»áµÝ¹éµ÷Óø¸¹¹Ô캯Êý£¬µ«ÊÇÔݲ»Ö´Ðй¹Ô캯ÊýµÄÓï¾ä£»
3.¶Ô¸Ã¸¸¹¹Ô캯Êý¶ÔÓ¦µÄÀàµÄʵÀý±äÁ¿¸³Öµ
4.Ö´Ðи¸¹¹Ô캯ÊýµÄÆäËûÓï¾ä
5.¶ÔÓÚ×ÓÀִ࣬ÐÐ2-4²½Öè ......
¹ØÓÚÁùÖÖJavaÒì³£´¦Àí³ÌÐòµÄªϰ
Äã¾õµÃ×Ô¼ºÊÇÒ»¸öJavaר¼ÒÂð£¿ÊÇ·ñ¿Ï¶¨×Ô¼ºÒÑ¾È«ÃæÕÆÎÕÁËJavaµÄÒì³£´¦Àí»úÖÆ£¿ÔÚÏÂÃæÕâ¶Î´úÂëÖУ¬ÄãÄܹ»Ñ¸ËÙÕÒ³öÒì³£´¦ÀíµÄÁù¸öÎÊÌâÂð£¿
1 OutputStreamWriter out = ...
2 java.sql.Connection conn = ...
3 try { // ¢É
4 ¡¡Statement stat = conn.createStatement();
5 ¡¡ResultS ......
BufferedReader:
Read text from a character-input
stream, buffering characters so as to provide for the
efficient reading of characters, arrays, and ......
×ªÔØ×Ô£ºwww.csdn.net
2003 Äê 1 ÔÂ
ÔÚ¿ªÔ´ÊÀ½çÖУ¬ÓÐÁ½ÌױȽÏÓÐÓ°ÏìµÄAPI¿É¹©Ê¹Óã¬Ò»¸öÊÇPOI£¬Ò»¸öÊÇjExcelAPI¡£ÆäÖÐjExcelAPIÊÇÒ»¸öº«¹ú³ÌÐòÔ±µÄ×÷Æ·£¬ËäȻûÓÐPOIÄÇÑùѪͳ¸ß¹ó£¬µ«ÊÇÔÚ±ÊÕßµÄʹÓùý³ÌÖУ¬¸Ð¾õ¼òµ¥·½±ã£¬¶ÔÖÐÎÄÖ§³Ö·Ç³£ºÃ£¬¹¦ÄÜÒ²±È½ÏÇ¿´ó¡£ËüµÄÏÂÔØµØÖ·ÊÇ£ºhttp://www.andykhan.com/jexcelapi/ µ±Ç ......