javaС½á
1 ×÷ÓÃÓò
javaÖÐ×÷ÓÃÓòµÄ·¶Î§ÓÉ»¨À¨ºÅ±êʾ¡£
2¹ØÓÚstatic
À¬»øÊÕ¼¯Æ÷Ö»ÖªµÀËѼ¯ÄÇЩÓÐnewÔËËã·û·ÖÅäµÄÄڴ棬²»ÖªµÀÈçºÎÊÍ·ÅÌØÊâÄÚ´æ¡£
Èç¹ûÀ¬»øÊÕ¼¯Æ÷×¼±¸»ØÊÕ¶ÔÏóµÄÄڴ棬ËüÊ×Ïȵ÷ÓÃfinalize()£¬¶øÇÒÖ»ÓÐÔÚÏÂÒ»´ÎÀ¬»øËѼ¯¹ý³ÌÖУ¬²Å»áÕæÕý»ØÊÕ¶ÔÏóµÄÄÚ´æ¡£ËùÒÔ˵Èç¹ûʹÓÃ
finalize()¾Í»áÍê³ÉÖØÒªµÄÇå³ýºÍÇåɨ¹¤×÷¡£
ÒªµãÒ»À¬»øÊÕ¼¯²»µÈÓÚÆÆ»µ¡£
Òªµã¶þÎÒÃǵĶÔÏó¿ÉÄܲ»»áµ±×öÀ¬»ø±»ÊÕµô¡£
3 finalize()µÄÓÃ;
À¬»øÊÕ¼¯Ö»¸úÄÚ´æÓйء£
²¢²»ÊÇÇå³ý¹¤×÷µÄÀíÏ볡Ëù
×îÓÐÓõÄÒ»µã¾ÍÊǹ۲ìÀ¬»øËѼ¯µÄ¹ý³Ì¡£
Ïà¹ØÎĵµ£º
package com.tiantian;
import java.util.*;
public class JAVAContainer {
public static void main(String[] args) throws Exception {
// ArrayList
{
ArrayList arraylist = new ArrayList();
arraylist.add(0, "end");//Ö¸¶¨Ë÷Òý¼ÓÈëÖµ
// Ðè×¢ÒâµÄÊÇ£¬Èç¹ûÏÖÓÐ2¸öÖµ£¬ÎÒÓÈëË÷Ò?µÄÄÇô¾Í»á³öÏÖÒì³£
f ......
import java.net.InetAddress;
import java.io.InputStream;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.text.ParseException;
import java.util.StringTokenizer;
public final class NetworkInfo {
private final static String getMacAddress() throws IOException {
String ......
À´×Ô£ºhttp://www.anymobile.org
1¡¢ÕªÒª..........................................................................1
2¡¢¸ÄÉÆ·þÎñÆ÷µÄÐÔÄÜ...........................................................1
3¡¢·ÖÎöÆ÷ÔÀí...................................................................2
4¡¢JProfiler ¼ò½é... ......
JAVAʵÏÖAES¼ÓÃÜ
1. Òò×Ó
ÉϴνéÉÜÁË¡¶JAVAʵÏÖAES¼ÓÃÜ¡·£¬ÖмäÌáµ½½üЩÄêDESʹÓÃÔ½À´Ô½ÉÙ£¬ÔÒò¾ÍÔÚÓÚÆäʹÓÃ56λÃÜÔ¿£¬±È½ÏÈÝÒ×±»ÆÆ½â£¬½üЩÄêÀ´Öð½¥±»AESÌæ´ú£¬AESÒѾ±ä³ÉĿǰ¶Ô³Æ¼ÓÃÜÖÐ×îÁ÷ÐÐËã·¨Ö®Ò»£»AES¿ÉÒÔʹÓÃ128¡¢192¡¢ºÍ256λÃÜÔ¿£¬²¢ÇÒÓÃ128λ·Ö×é¼ÓÃܺͽâÃÜÊý¾ ......
DateTimeHelper ʱ¼ä×é¼þ
/**
*
*/
package com.ibm08001.bbs.utils;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
*
*/
public class DateTimeHelper {
private static SimpleDateFormat FULL_SDF = new SimpleDateFormat ......