Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

JavaÎļþ²Ù×÷´óÈ«

JavaÎļþ²Ù×÷´óÈ« 
 1.´´½¨Îļþ¼Ð
//import java.io.*;
File myFolderPath = new File(%%1);
try {
if (!myFolderPath.exists()) {
   myFolderPath.mkdir();
}
}
catch (Exception e) {
System.out.println("н¨Ä¿Â¼²Ù×÷³ö´í");
e.printStackTrace();

2.´´½¨Îļþ
//import java.io.*;
File myFilePath = new File(%%1);
try {
if (!myFilePath.exists()) {
myFilePath.createNewFile();
}
FileWriter resultFile = new FileWriter(myFilePath);
PrintWriter myFile = new PrintWriter(resultFile);
myFile.println(%%2);
resultFile.close();
}
catch (Exception e) {
System.out.println("н¨Îļþ²Ù×÷³ö´í");
e.printStackTrace();

3.ɾ³ýÎļþ
//import java.io.*;
File myDelFile = new File(%%1);
try {
myDelFile.delete();
}
catch (Exception e) {
System.out.println("ɾ³ýÎļþ²Ù×÷³ö´í");
e.printStackTrace();

4.ɾ³ýÎļþ¼Ð
//import java.io.*;
File delFolderPath = new File(%%1);
try {
delFolderPath.delete(); //ɾ³ý¿ÕÎļþ¼Ð
}
catch (Exception e) {
System.out.println("ɾ³ýÎļþ¼Ð²Ù×÷³ö´í");
e.printStackTrace();

5.ɾ³ýÒ»¸öÎļþϼÐËùÓеÄÎļþ¼Ð
//import java.io.*;
File delfile=new File(%%1);
File[] files=delfile.listFiles();
for(int i=0;i<files.length;i++){
if(files[i].isDirectory()){
files[i].delete();
  }
}   
 
  
  6.Çå¿ÕÎļþ¼Ð
//import java.io.*;
File delfilefolder=new File(%%1);
try {
if (!delfilefolder.exists()) {
delfilefolder.delete();
}
delfilefolder.mkdir();
}
catch (Exception e) {
System.out.println("Çå¿ÕĿ¼²Ù×÷³ö´í");
e.printStackTrace();

7.¶ÁÈ¡Îļþ
//import java.io.*;
// ÖðÐжÁÈ¡Êý¾Ý
FileReader fr = new FileReader(%%1);
BufferedReader br = new BufferedReader(fr);
String %%2 = br.readLine();
while (%%2 != null) {
%%3
%%2 = br.readLine();
}
br.close();
fr.close(); 
8.дÈëÎļþ
//import java.io.*;
// ½«Êý¾ÝдÈëÎļþ
try {
FileWriter fw


Ïà¹ØÎĵµ£º

java µ÷ÓÃmysql¿Í»§¶Ëµ¼È룬µ¼³öÊý¾Ý

 ×î½üÓöµ½Ò»¸öÐèÇóÒªÔÚlinuxÏÂÓÃjava µ÷ÓÃmysql¿Í»§¶ËÔ¶³ÌµÇ½mysql·þÎñÆ÷£¬´Ó¿Í»§¶Ë»úÆ÷µ¼Èëmysql½Å±¾£¬´Ómysql·þÎñÆ÷¶Ëµ¼³ö±íÖеÄÊý¾Ý¡£ÒÔÏÂÊÇÓõ½µÄÖ÷Òª·½·¨£º
Java ´úÂë 
/**  
 * µ¼ÈëÊý¾Ý  
  * @param  ½Å±¾µÄµØÖ·ºÍÃû³Æ  
 * @return ÊÇ·ñ³ ......

JAVA»·¾³±äÁ¿ÉèÖÃ

¾ÙÀý×Ó˵Ã÷Ò»ÇС£
JAVA_HOME£º C:\j2sdk1.4.2_13
 
Path£º         C:\j2sdk1.4.2_13\bin;
Classpath£º.;JAVA_HOME\lib\tools.jar ; JAVA_HOME\lib\dt.jar;
                 &n ......

Jconsole ºÍ jps ÎÞ·¨ÏÔʾ±¾µØ Java ½ø³ÌÁбí

ǰһÕóÔÚ¹«Ë¾ÀïʹÓà jconsle ʱһÇÐÕý³££¬È»¶øÔÚ¼ÒÖеĻúÆ÷ÉÏÈ´³öÏÖÁ˱êÌâËùʾµÄÎÊÌ⣺
jconsole ºÍ jps ÎÞ·¨ÏÔʾ±¾µØ Java ½ø³ÌÁÐ±í¡£
µ±Ê±Ö±½ÓÀûÓà -Dcom.sun.management.jmxremote.port=port Æô¶¯Ä¿±ê java ½ø³Ì£¬²¢ÔÚ jconsole ÖÐͨ¹ý localhost:port ·½Ê½³É¹¦Á¬½ÓÉÏÄ¿±ê java ½ø³Ì¡£ÓÐÁËÕâ¸ö work around Ö®ºó£¬¶ÔÕ ......

JavaÐéÄâ»ú ºÍ javaÐéÄâ»úϵĽø³Ì

Ò»¡¢Ê²Ã´ÊÇJavaÐéÄâ»ú
     µ±Äã̸µ½JavaÐéÄâ»úʱ£¬Äã¿ÉÄÜÊÇÖ¸£º
     1¡¢³éÏóµÄJavaÐéÄâ»ú¹æ·¶
     2¡¢Ò»¸ö¾ßÌåµÄJavaÐéÄâ»úʵÏÖ
     3¡¢Ò»¸öÔËÐеÄJavaÐéÄâ»úʵÀý
¶þ¡¢JavaÐéÄâ»úµÄÉúÃüÖÜÆÚ
     Ò»¸öÔËÐÐ ......

javaÓëÍøÂç


1 ÍøÂçͨÐŵı¾ÖÊÊǽø³Ì¼äͨÐÅ¡£   
2 TcpЭÒéºÍUDPЭÒé
TCP£º¿ªÏú´ó£¬ÓÃÓÚ¿É¿¿ÐÔÒªÇó¸ßµÄ³¡ºÏ¡£
TCPµÄ¹ý³ÌÏ൱ÓÚ´òµç»°µÄ¹ý³Ì
UDP£ºÓÃÔÚ¶ÔʵʱÐÔÒªÇó±È½Ï¸ßµÄ³¡ºÏ¡£
UDPµÄ¹ý³ÌÏ൱ÓÚдÐŵĹý³Ì¡£
×¢Ò⣺socketÊÇÌ×½Ó×Ö£¬ipºÍport£¨¶Ë¿ÚºÅ 0~65535¸ö¶Ë¿Ú£¬Ò»¸ö¶Ë¿ÚÖ»ÄÜÓÐÒ»¸ö½ø³Ì£©
3£¬   ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ