java文件操作

 package File;
import java.io.*;
 public class FileOperate {
    public FileOperate() {
    }

    /**
     * 新建目录
     * @param folderPath String 如 c:/fqf
     * @return boolean
     */
    public void newFolder(String folderPath) {
      try {
        String filePath = folderPath;
        filePath = filePath.toString();
        java.io.File myFilePath = new java.io.File(filePath);
        if (!myFilePath.exists()) {
          myFilePath.mkdir();
        }
      }
      catch (Exception e) {
        System.out.println("新建目录操作出错");
        e.printStackTrace();
      }
    }

    /**
     * 新建文件
     * @param filePathAndName String 文件路径及名称 如c:/fqf.txt
     * @param fileContent String 文件内容
     * @return boolean
     */
    public void newFile(String filePathAndName, String fileContent) {

      try {
        String filePath = filePathAndName;
        filePath = filePath.toString();
        File myFilePath = new File(filePath);
        if (!myFilePath.exists()) {
          myFilePath.createNewFile();
        }
        FileWriter resultFile = new FileWriter(myFilePath);
        PrintWriter myFile = new PrintWriter(resultFile);
        String strContent = fileContent;
        myFile.println(strContent);
        resultFile.close();

      }
      catch (Exception e) {
        System.out.println("新建目录操作出错");
        e.printStackTrace();

      }

    }

    /**
     * 删除文件
     * @param filePathAndName String 文件路径及名称 如c:/fqf.txt
     * @param fileContent String
     * @return boolean
     */
    public void delFile(String filePathAndName) {
      try {
        String filePath = filePathAndName;
        filePath = filePath.toString();
        java.io.File myDelFile = new java.io.File(filePath);
        myDelFile.delete();

      }
      catch (Exception e) {
        System.out.println("删除文件操作出错");
        e.printStackTrace();

      }

    }

    /**
     * 删除文件夹
     * @param filePathAndName String 文件夹路径及名称 如c:/fqf
     * @param fileContent String
     * @return boolean
     */
    public void delFolder(String folderPath) {
      try {
        delAllFile(folderPath); //删除完里面所有内容
        String filePath = folderPath;
        filePath = filePath.toString();
        java.io.File myFilePath = new java.io.File(filePath);
        myFilePath.delete(); //删除空文件夹

      }
      catch (Exception e) {
        System.out.println("删除文件夹操作出错");
        e.printStackTrace();

      }

    }

    /**
     * 删除文件夹里面的所有文件
     * @param path String 文件夹路径 如 c:/fqf
     */
    public void delAllFile(String path) {
      File file = new File(path);
      if (!file.exists()) {
        return;
      }
      if (!file.isDirectory()) {
        return;
      }
      String[] tempList = file.list();
      File temp = null;
      for (int i = 0; i < tempList.length; i++) {
        if (path.endsWith(File.separator)) {
          temp = new File(path + tempList[i]);
        }
        else {
          temp = new File(path + File.separator + tempList[i]);
        }
        if (temp.isFile()) {
          temp.delete();
        }
        if (temp.isDirectory()) {
          delAllFile(path+"/"+ tempList[i]);//先删除文件夹里面的文件
          delFolder(path+"/"+ tempList[i]);//再删除空文件夹
        }
      }
    }

    /**
     * 复制单个文件
     * @param oldPath String 原文件路径 如：c:/fqf.txt
     * @param newPath String 复制后路径 如：f:/fqf.txt
     * @return boolean
     */
    public void copyFile(String oldPath, String newPath) {
      try {
        int bytesum = 0;
        int byteread = 0;
        File oldfile = new File(oldPath);
        if (oldfile.exists()) { //文件存在时
          InputStream inStream = new FileInputStream(oldPath); //读入原文件
          FileOutputStream fs = new FileOutputStream(newPath);
          byte[] buffer = new byte[1444];
          while ( (byteread = inStream.read(buffer)) != -1) {
            bytesum += byteread; //字节数 文件大小
           // System.out.println(bytesum);
            fs.write(buffer, 0, byteread);
          }
          inStream.close();
        }
      }
      catch (Exception e) {
        System.out.println("复制单个文件操作出错");
        e.printStackTrace();

      }

    }

    /**
     * 复制整个文件夹内容
     * @param oldPath String 原文件路径 如：c:/fqf
     * @param newPath String 复制后路径 如：f:/fqf/ff
     * @return boolean
     */
    public void copyFolder(String oldPath, String newPath) {

      try {
        (new File(newPath)).mkdirs(); //如果文件夹不存在 则建立新文件夹
        File a=new File(oldPath);
        String[] file=a.list();
        File temp=null;
        for (int i = 0; i < file.length; i++) {
          if(oldPath.endsWith(File.separator)){
            temp=new File(oldPath+file[i]);
          }
          else{
            temp=new File(oldPath+File.separator+file[i]);
          }

          if(temp.isFile()){
            FileInputStream input = new FileInputStream(temp);
            FileOutputStream output = new FileOutputStream(newPath + "/" +
                (temp.getName()).toString());
            byte[] b = new byte[1024 * 5];
            int len;
            while ( (len = input.read(b)) != -1) {
              output.write(b, 0, len);
            }
            output.flush();
            output.close();
            input.close();
          }
          if(temp.isDirectory()){//如果是子文件夹
            copyFolder(oldPath+"/"+file[i],newPath+"/"+file[i]);
          }
        }
      }
      catch (Exception e) {
        System.out.println("复制整个文件夹内容操作出错");
        e.printStackTrace();

      }

    }

    /**
     * 移动文件到指定目录
     * @param oldPath String 如：c:/fqf.txt
     * @param newPath String 如：d:/fqf.txt
     */
    public void moveFile(String oldPath, String newPath) {
      copyFile(oldPath, newPath);
      delFile(oldPath);

    }

    /**
     * 移动文件到指定目录
     * @param oldPath String 如：c:/fqf.txt
     * @param newPath String 如：d:/fqf.txt
     */
    public void moveFolder(String oldPath, String newPath) {
      copyFolder(oldPath, newPath);
      delFolder(oldPath);

    }
  


/**
  * @param args
  */
 public static void main(String[] args) {
  // TODO 自动生成方法存根
  FileOperate f=new FileOperate();
  f.copyFile("g:\\电影\\crazy stone.wmv", "g:\\222.wmv");
 }

}