java¶ÔÎļþµÄ²Ù×÷

1Áгö´ÅÅÌ/Îļþ¼ÐÄÚµÄÎļþ
import java.io.File;
import java.io.IOException;
 
 
public class Test {
 
    public static void main(String[] args) throws IOException{
       // TODO Auto-generated method stub
      File f = new File("D:");//´ÅÅÌ
//File f = new File("D:\\µçÓ°");//Îļþ¼Ð
      File lf[] = f.listFiles();
      for(int i = 0;i<lf.length;i++){
      System.out.println(lf[i]);
      }
    }
}
 
2¶ÔÎļþµÄ²Ù×÷
import java.io.File;
import java.io.IOException;
 
 
public class Test {
 
    public static void main(String[] args) throws IOException{
       // TODO Auto-generated method stub
      File f = new File("D:\\java.doc");
      if(!f.exists()){  //ÅжÏÊÇ·ñ¸ÃÎļþ´æÔÚ
      f.createNewFile();//Èç¹û²»´æÔھʹ´½¨
      }
     
      System.out.println("ÎļþµÄ·¾¶ÊÇ£º "+f.getAbsolutePath());
      System.out.println("ÎļþÊÇ·ñ¿Éд£º "+f.canWrite());     
      System.out.println("ÎļþÊÇÒÑɾ³ý£º "+f.delete()); 
    }
}
 
3¶ÔĿ¼µÄ²Ù×÷
import java.io.File;
import java.io.IOException;
 
 
public class Test {
    public static void main(String[] args) throws IOException{
       // TODO Auto-generated method stub
      File dir= new File("D:\\java");
      if(!dir.exists()){  //ÅжÏĿ¼ÊÇ·ñ´æÔÚ
     dir.mkdir();//Èç¹û²»´æÔھʹ´½¨
      }
  &