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Java»ñµÃÖ¸¶¨ClassLoaderËù¼ÓÔØµÄÀàÁбí

     Ò»Ö±ÏëʵÏÖÏñDriverManagerÄÇÑùµÄgetConnection·½·¨£¬Í¨¹ý´Ë·½·¨¾Í¿ÉÒÔ»ñµÃÁ¬½Ó£¬¶øÇÒ»¹²»ÓÃÖ¸¶¨Driver£¬µ«Ç°ÌáÊÇDriverÒѾ­Í¨¹ýClass.forName()»ònew Driver()½øÐÐÁ˼ÓÔØ¡£½ñÌìÖÕÓÚµÃÒÔʵÏÖ¡£
      package quiz;
import java.lang.reflect.Field;
public class ClassLoaderDriver {
/**
* @param args
* @throws NoSuchFieldException
* @throws SecurityException
* @throws IllegalAccessException
* @throws IllegalArgumentException
* @throws ClassNotFoundException
*/
public static void main(String[] args) throws SecurityException, NoSuchFieldException, IllegalArgumentException, IllegalAccessException, ClassNotFoundException {
Class.forName("com.mysql.jdbc.Driver");
Field field = ClassLoader.class.getDeclaredField("classes");
field.setAccessible(true);//ÉèÖøóÉÔ±±äÁ¿Îª¿É·ÃÎÊ
System.out.println(field.get(ClassLoader.getSystemClassLoader()));
}
}

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java ²Ù×÷Cookie

java ²Ù×÷cookie
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дÈëcookie
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String cookieName="Sender";
Cookie cookie=new Cookie(cookieName, "Test_Content");
cookie.setMaxAge(10);
respo ......

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JAVAÖ®IOÁ÷(³¬ÏêϸµÄJava.io°üµÄ½éÉÜ!)
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1.1 ÒÔ×Ö½ÚΪµ¼ÏòµÄstream
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Java»ñÈ¡¸÷ÖÖ³£ÓÃʱ¼ä·½·¨

package com.test;


import java.text.DateFormat;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

public class TimeTest {
//ÓÃÀ´ ......

Java·¢Óʼþ

RT
package
 com.fxt.test;  
import
 org.apache.commons.mail.EmailException;  
import
 org.apache.commons.mail.SimpleEmail;  
public
 
class
 Mail {  
    public
 
static
 
void
 m ......

ÔÚJavaÖÐÁ½ÖÖ²»Í¬µÄ¶Ô±äÁ¿¸³Öµ·½Ê½

ÔÚJavaÖÐÓÐÁ½ÖÖ²»Í¬µÄ¶Ô±äÁ¿¸³Öµ·½Ê½£¬Ò»ÖÖÊÇÖ±½Ó½«Ò»¸öÖµ¸³¸ø±äÁ¿¡£ÀýÈ磺
int a = 1;
String s = "abc";
Integer in = 125;
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String s = new String("abc")
Integer in = new Integer(125);
Á½ÖÖ·½Ê½µÄ²»Í¬Ö®´¦ÔÚÓÚ£º
µÚÒ»ÖÖ·½Ê½±äÁ¿µÄÖµ´æ´¢ÔÚ¶ÑÕ»ÖУ¬µ±ÏÂÒ» ......
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