java生成文件夹和文件的简单示例分享

实现文件夹和文件生成

package com.gotobus.common;

import java.io.file;
import java.io.fileinputstream;
import java.io.fileoutputstream;
import java.io.ioexception;
import java.io.inputstream;

public class jfile {

 public static boolean createfile(string destfilename) { 
        file file = new file(destfilename); 
        if(file.exists()) { 
         return false; 
        } 
        if (destfilename.endswith(file.separator)) { 
         return false; 
        } 
        if(!file.getparentfile().exists()) { 
      if(!file.getparentfile().mkdirs()) { 
       return false; 
            } 
        } 
        try { 
            if (file.createnewfile()) { 
             return true; 
            } else { 
             return false; 
            } 
        } catch (ioexception e) { 
            e.printstacktrace(); 
            return false; 
        } 
    } 

     public static boolean createdir(string destdirname) { 
        file dir = new file(destdirname); 
        if (dir.exists()) { 
         return false; 
        } 
        if (!destdirname.endswith(file.separator)) { 
            destdirname = destdirname + file.separator; 
        } 
       if (dir.mkdirs()) { 
           return true; 
        } else { 
            return false; 
        } 
    } 

    public static string createtempfile(string prefix, string suffix, string dirname) { 
        file tempfile = null; 
        if (dirname == null) { 
            try{ 
                tempfile = file.createtempfile(prefix, suffix); 
                return tempfile.getcanonicalpath(); 
            } catch (ioexception e) { 
                e.printstacktrace(); 
               return null; 
            } 
        } else { 
            file dir = new file(dirname); 
            if (!dir.exists()) { 
                if (!jfile.createdir(dirname)) { 

                    return null; 
                } 
            } 
            try { 
                tempfile = file.createtempfile(prefix, suffix, dir); 
                return tempfile.getcanonicalpath(); 
            } catch (ioexception e) { 
                e.printstacktrace(); 
                return null; 
            } 
        } 
    }

    public static void copyfile(string oldpath, string newpath) {
        try {
            int bytesum = 0;
            int byteread = 0;
            file oldfile = new file(oldpath);
            if (oldfile.exists()) {
             inputstream instream = new fileinputstream(oldpath);
                fileoutputstream fs = new fileoutputstream(newpath);
                byte[] buffer = new byte[1444];
                int length;
                while ( (byteread = instream.read(buffer)) != -1) {
                    bytesum += byteread;
                    fs.write(buffer, 0, byteread);
                }
                instream.close();
            }
        }
        catch (exception e) {
                e.printstacktrace();

        }
    }
}