JAVA新建文件，新建目录等文件操作代码示例，java示例,[Java]代码impo

JAVA新建文件，新建目录等文件操作代码示例，java示例,[Java]代码impo

[Java]代码

import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.FileWriter;import java.io.InputStream;import java.io.PrintWriter;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];                int length;                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);    }}