java下文件遍历，与删除

package cn.stat.p1.file;

import java.io.File;

public class newfilelist {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        File f1=new File("E:\\BaiduYunDownload");
        nlist(f1,0);

    }
    public static void nlist(File f1,int len)
    {
        File[] name=f1.listFiles();
        for(int x = 0;x<name.length;x++)
        {
            if(name[x].isDirectory())
            {
                System.out.print("|-");
                for(int y=0;y<len;y++)
                {
                    System.out.print("-");
                }
                System.out.println(name[x].getAbsolutePath());
                
                nlist(name[x],len+1);
            }else
            {
                System.out.print("|-");
                for(int y=0;y<len;y++)
                {
                    System.out.print("-");
                }
                System.out.println(name[x].getAbsolutePath());
            }
        }
    }

}

package cn.stat.p1.file;

import java.io.File;

public class filedel {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        File f1=new File("E:\\s2");
        delfile(f1,0);
    }

    private static void delfile(File f1, int len) {
        // TODO Auto-generated method stub
        File[] filename=f1.listFiles();
        for(int x=0;x<filename.length;x++)
        {
            if(filename[x].isDirectory())
            {
                delfile(filename[x], len+1);
                System.out.println(filename[x]+"删除："+filename[x].delete());
            }
            else
            {
                System.out.println(filename[x]+"删除："+filename[x].delete());
            }
        }
    }

}