java生成文件夾和文件的簡單示例分享

更新時間：2014年04月02日 09:00:33 作者：

這篇文章主要介紹了java生成文件夾和文件的簡單示例,需要的朋友可以參考下

實現(xiàn)文件夾和文件生成

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();