Java IO流 之 文件夹工具封装 FileUtil

Posted 2020-11-20 verejava

http://www.verejava.com/?id=17160035681948

public class Test2 {
    public static void main(String[] args)
    {
        FileUtil.createDir("dir3");
        FileUtil.createDirs("dir4/test");
        FileUtil.renameDir("dir4/test", "dir4/newtest");
        FileUtil.deleteEmptyDir("dir3");
    }
}




//目录封装类

import java.io.File;


public class FileUtil {
    //创建一级目录
    public static boolean createDir(String dirName)
    {
        File dir=new File(dirName);
        if(!dir.exists())
        {
           return  dir.mkdir();
        }
        return false;
    }
    //创建多级目录
    public static boolean createDirs(String dirName)
    {
        File dir=new File(dirName);
        if(!dir.exists())
        {
            return dir.mkdirs();
        }
        return false;
    }
    
    //重命名目录
    public static boolean renameDir(String oldDir,String newDir)
    {
        File old=new File(oldDir);
        if(old.isDirectory())
        {
            return old.renameTo(new File(newDir));
        }
        return false;
    }
    
    //删除空目录
    public static boolean deleteEmptyDir(String dirName)
    {
        File dir=new File(dirName);
        if(dir.isDirectory())
        {
            return dir.delete();
        }
        return false;
    }

    //递归删除目录
    public static void deleteDirs(String dirName)
    {
        File dir=new File(dirName);
        File[] dirs=dir.listFiles();
        for(int i=0;dirs!=null&&i<dirs.length;i++)
        {
            File f=dirs[i];
            //如果是文件直接删除
            if(f.isFile())
            {
                f.delete();
            }
            //如果是目录继续遍历删除
            if(f.isDirectory())
            {
                deleteDirs(f.getAbsolutePath());
            }
        }
        //删除本身
        dir.delete();
    }
}

http://www.verejava.com/?id=17160035681948