文件夹

import java.io.*;
import java.io.*;
class Main{

public static void main(String[] args) throws IOException{
// File path=new File("e:\\liudan2");
// File file=new File(path,"txt.txt");

StringBuffer st1=new StringBuffer("d:\\");
for(int i=0;i<1000;i++)
{

st1.append("ld"+i+"\\"+"\\");

}

File path=new File(st1.toString());
File file=new File(path,"txt.txt");
path.mkdirs();
file.createNewFile();

}
}