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//µ¼Èë
import java.util.Date;
import java.text.DateFormat;
import java.text.SimpleDateFormat;     Date dt=new Date();//Èç¹û²»ÐèÒª¸ñʽ,¿ÉÖ±½ÓÓÃdt,dt¾ÍÊǵ±Ç°ÏµÍ³Ê±¼ä
DateFormat df = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");//ÉèÖÃÏÔʾ¸ñʽ
String nowTime="";
nowTime= df.format(dt);//ÓÃDateFormatµÄformat()·½·¨ÔÚdtÖлñÈ¡²¢ÒÔyyyy/MM/dd HH:mm:ss¸ñʽÏÔʾ


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java UnicodeÓëÖÐÎÄ»¥»»

static String string2Unicode(String s) {
try {
StringBuffer out = new StringBuffer("");
byte[] bytes = s.getBytes("unicode");
for (int i = 2; i < bytes.length - 1; i += 2) {
out.append("u");
String str = Integer.toHexString(bytes[i + 1] & 0xff);
f ......

Java reflection´úÂëʾÀý

package com.mywebtest.common;
import java.lang.reflect.Array;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
/**
 * Java reflection ·Ç³£ÓÐÓã¬ËüʹÀàºÍÊý¾Ý½á¹¹ÄÜ°´Ãû³Æ¶¯Ì¬¼ìË÷Ïà¹ØÐÅÏ¢£¬²¢ÔÊÐíÔÚÔËÐÐ× ......

JAVA ÓëSOCKETͨѶ

ÏÈÀ´¿´¿´¿Í»§¶Î³ÌÐò±àдµÄÁ÷³Ì:
¡¡¡¡1¡¢ Ê×Ïȵ÷ÓÃSocketÀàµÄ¹¹Ô캯Êý£¬ÒÔ·þÎñÆ÷µÄÖ¸¶¨µÄIPµØÖ·»òÖ¸¶¨µÄÖ÷»úÃûºÍÖ¸¶¨µÄ¶Ë¿ÚºÅΪ²ÎÊý£¬´´½¨Ò»¸öSocketÁ÷£¬ÔÚ´´½¨SocketÁ÷µÄ¹ý³ÌÖаüº¬ÁËÏò·þÎñÆ÷ÇëÇó½¨Á¢Í¨Ñ¶Á¬½ÓµÄ¹ý³ÌʵÏÖ¡£
¡¡¡¡2¡¢ ½¨Á¢ÁË¿Í»§¶ËͨѶSocketºó¡£¾Í¿ÉÒÔʹÓÃSocketµÄ·½·¨getInputStream()ºÍgetOutputStream() ......

JAVAÖеļ¯ºÏÀà

1>CollectionµÄÓ÷¨£º
import java.util.*;
public class List1
{
 public static void main(String []args)
 {
  String a="A";
  String b="B";
  String c="C";
  Collection<String>list = new ArrayList<String>();
  list.add ......

javaµÄHashCode·½·¨

ÓÐÐí¶àÈËѧÁ˺ܳ¤Ê±¼äµÄJava£¬µ«Ò»Ö±²»Ã÷°×hashCode·½·¨µÄ×÷Óã¬
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