目录的简单操作

 1 import java.io.File;
 2 
 3 public class DirDemo {
 4 public static void main(String[] args) {
 5     String path = "abc";
 6     File f = new File(path);
 7     if(f.exists()){
 8         f.delete(); //删除目录
 9     }else{
10         f.mkdir();//建立目录
11     }
12 }
13 }

 1 import java.io.File;
 2 
 3 public class DirDemo2 {
 4     public static void main(String[] args) {
 5         String path = "c:/aaa4/bbb3/ddd2";
 6         File f = new File(path);
 7         if (f.exists()) {
 8 
 9         } else {
10             f.mkdirs();
11         }

1 String g = "g:/";
2         File gf = new File(g);
3         for(File fg : gf.listFiles()){
4             String info = fg.isFile() ? "文件" : "目录";
5             System.out.println(fg.getName()+":"+info);
6         }
7         

 1 public static void del(String path){
 2         File f = new File(path);
 3         for(File ff : f.listFiles()){
 4             if(ff.isFile()){
 5                 ff.delete();
 6             }else{
 7                 del(ff.getAbsolutePath());
 8             }
 9         }
10         f.delete();
11     }