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JAVA SE ÖеÄFile

 import java.io.File;

public class FileTest{
public static void main(String[] args){
scan("c:/file/ss");
}
public static void scan(String path){
if(path ==null)
return ;
File file = new File(path); //Éú³ÉÒ»¸öеÄÐéÄâÎļþ·¾¶
file.mkdirs(); //Èç¹û ‘c:/file/ss’·¾¶²»´æÔÚ£¬ÔòÉú³ÉеÄÎļþ¼Ð¼°Æä¸¸Îļþ¼Ð
String b = "aa.txt"; //ÔÚc:/file/ss Éú³ÉÐÂÎļþµÄÃû×Ö
File file1 = new File(file,b); //ÔÚ¸¸ÎļþÐéÄâ·¾¶ÏÂc:/file/ssÉú³ÉÒ»¸öеÄfile
//file1.mkdirs();
try{
file1.createNewFile();} //´´½¨Õâ¸öÎļþ
catch(Exception e){
e.printStackTrace();
}
}
}


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javaÖÐStringÓëStringBufferµÄÇø±ð

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1.Character ÊǽøÐе¥¸ö×Ö·û²Ù×÷µÄ£¬
 
2.String ¶ÔÒ»´®×Ö·û½øÐвÙ×÷¡£²»¿É±äÀà¡£
 
3.StringBuffer Ò²ÊǶÔÒ»´®×Ö·û½øÐвÙ×÷£¬µ«ÊǿɱäÀà¡£
 
String:
ÊǶÔÏó²»ÊÇԭʼÀàÐÍ.
Ϊ²»¿É±ä¶ÔÏó,Ò»µ©±»´´½¨,¾Í²»ÄÜÐÞ¸ÄËüµÄÖµ.
¶ÔÓÚÒѾ­´æÔÚµÄString¶ÔÏóµÄÐÞ¸ ......

Java²Ù×÷OracleÊý¾Ý¿â£¨½¨±í£¬²åÊý¾Ý£¬É¾³ý£©

ÓÃjpa²»Äܽ¨±í£¬sqlÓï¾äÊǶԵ쬲»¹ý¾ÍÊDz»Äܽ¨£¬Í¬ÑùµÄsql£¬ÔÚÏÂÃæµÄjdbcÖоͿÉÒÔ£¬¿ÉÄÜÊÇ¿ò¼ÜµÄÏÞÖÆ£¬Ï£Íû¸ßÈËÖ¸µã
import java.net.URL;
import java.sql.*;
public class Create {
public Create() {
}
public static void main(String[] args){
String url = "jdbc:oracle:thin:@10.0.1.3:1521:SDCDB" ......

javaÖеÄClassLoader

ClassLoaderÒ»¸ö¾­³£³öÏÖÓÖÈúܶàÈËÍû¶øÈ´²½µÄ´Ê£¬±¾ÎĽ«ÊÔͼÒÔ×îdzÏÔÒ×¶®µÄ·½Ê½À´½²½â ClassLoader£¬Ï£ÍûÄܶԲ»Á˽â¸Ã»úÖÆµÄÅóÓÑÆðµ½Ò»µãµã×÷Óᣠ
ÒªÉîÈëÁ˽âClassLoader£¬Ê×ÏȾÍÒªÖªµÀClassLoaderÊÇÓÃÀ´¸ÉʲôµÄ£¬¹ËÃû˼Ò壬Ëü¾ÍÊÇÓÃÀ´¼ÓÔØClassÎļþµ½JVM£¬ÒÔ¹©³ÌÐòʹÓõġ£ÎÒÃÇÖªµÀ£¬java³ÌÐò¿ÉÒÔ¶¯Ì¬¼ÓÔØÀඨÒå£ ......

ÓÃjavaѹËõÎļþ

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import java.io.*;
import java.util.zip.*;//ZipOutputStreamÕâ¸öÁ÷ÔÚÕâÀï
public class ZipOutputStreamTest
{
public static void main(String[] args) throws Exception
{
File f = new File("C:\\aaa.csv");
FileInputStream fis = new FileInputStream(f);
B ......

JAVA²Ù×÷XMLµÄÍêÕûÀý×Ó——W3C DOMƪ

ÕâÊÇÒ»¸öÓÃJAVA W3C DOM ½øÐÐXML²Ù×÷µÄÀý×Ó£¬°üº¬Á˲éѯ¡¢Ôö¼Ó¡¢Ð޸ġ¢É¾³ý¡¢±£´æµÄ»ù±¾²Ù×÷¡£½ÏÍêÕûµÄÃèÊöÁËÒ»¸öXMLµÄÕû¸ö²Ù×÷Á÷³Ì¡£ÊʺϸÕÈëÃÅJAVA XML²Ù×÷µÄÅóÓѲο¼ºÍѧϰ¡£
¼ÙÉèÓÐXMLÎļþ£ºtest1.xml
<?xml version="1.0" encoding="UTF-8"?>
<books>
 <book>
  <name>¹þÀï²¨Ì ......
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