Magic! Magic!

[Moguluri Ravi Kiran]

Hi something special here

you know how to print all the files names in the current directory with out using File class.
i found this at random. & the output is the list of files in the directory D:\Javap\

       class Magic
       {
           public static void main(String... a)
           {
               for(String af:a)
               System.out.println(af);
           }
       }  

        ouput:

      D:\javap>java Magic *


A.class
a.java
Aliase.class
Aliase.java
ar.class
ar.java
AT.class
AT.java
B.class
B.java
bo.class
bo.java
Book.class
Book.java
bop.class
bop.java
Brain Bench.txt
c.class
Dog.class
Dog.java
elps.class
elps.java
elps2.class
elps2.java
Engine.class
Engine.java
ex001.class
ex001.java
f.class
GarbageCollection.class
GarbageCollection.java
I.class
instance.class
Magic.class
Magic.java
MainTest.class
MainTest.java
Mixer.class
Mixer.java
Msg.class
Msg.java
SC.class
SC.java
shp.class
shp.java
st.class
st.java
str.class
str.java
Tank.class
Tank.java
test.class
test.java
ThreadDemo.class
ThreadDemo.java
tr.class
tr.java
w2.class
w2.java
wb.class
wb.java
Welcome.java
x.class
x.java
  
        

if anybody know this before please kindly explain me.

Thanks & regards..

[Jesper de Jong]

Moguluri Ravi Kiran wrote:if anybody know this before please kindly explain me.

How this works: If you use wildcards on the command line, like in your command:

D:\javap>java Magic *

then the Windows command prompt will expand the wildcard character * into all the filenames of the files in the current folder. So a command like that is the same as calling your program with the whole list of filenames:

D:\javap>java Magic A.class a.java Aliase.class Aliase.java ar.class ar.java ...

It's not Java that's doing this, but the Windows command prompt itself.

[Moguluri Ravi Kiran]

Thanks .....
I didnot think that...
mistake...

any way thankyou very much...