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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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javaÖеÄClassLoader

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ÒªÉîÈëÁ˽âClassLoader£¬Ê×ÏȾÍÒªÖªµÀClassLoaderÊÇÓÃÀ´¸ÉʲôµÄ£¬¹ËÃû˼Ò壬Ëü¾ÍÊÇÓÃÀ´¼ÓÔØClassÎļþµ½JVM£¬ÒÔ¹©³ÌÐòʹÓõġ£ÎÒÃÇÖªµÀ£¬java³ÌÐò¿ÉÒÔ¶¯Ì¬¼ÓÔØÀඨÒå£ ......

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public static void getConnAndTableStruct() {
Connection connection = null;
PreparedStatement pstmt = null;
ResultSetMetaData rsmd = null;
try {
   // mysqlÁ¬½Ó
   //Class.forName("org.gjt.mm.mysql.Driver");
   //connection = DriverManager.g ......

java.lang.reflect.Method £¨java·´Éä»úÖÆ£©

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public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest httpRequest = (HttpServletRe ......

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