java创建文件夹

try

{

if(!(new File("D:/java/newdata/").isDirectory()))

{

new File("D:/java/newdata/").mkdir();

new File("D:/java/newdata/2003-04-14/").mkdir();

}

else

{

new File("D:/java/newdata/2003-04-14/").mkdir();

}

}

catch(SecurityException e)

{

         System.out.println("can not make directory");

}

 

File myFile = new File("D:/java/newdata/2003-04-14/myfile.txt ");

FileOutStream fos = new FileOutStream(myFile);

用fos.write("你要写入的内容");