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Java Forum / General / March 2008Reading Sub Directories (Random) and deleting its contents?
Hi, I am looking for a code to read sub directories that are created randomly by "another program".i.e the name of the directories are not known in advance. For Example: Root Dir is "Systems01" Under "Systems01" they are many Directories (created by a program randomly) For example" Systems01 ------alpha ------qwerty ------ggrt ------remake Next time I will start my computer these sub directories will be different (alpha,qwerty....), so I need to make a generalize program to delete these directories as well as contents. Please note: "Another program" is not a virus, its a java program :) > I am looking for a code to read sub directories that are created > randomly by "another program".i.e the name of the directories are not > known in advance. The File class has methods to find all subdirectories in a given directory. Arne > gaur.rit...@gmail.com wrote: > > I am looking for a code to read sub directories that are created [quoted text clipped - 4 lines] > > Arne YA! Thats True, but I also need to delete the contents inside them. Sample Code ....... ------------------------ File f1 = new File ( "C:\\Systems01") ; File[] strFilesDirs = f1.listFiles ( ); for ( int i = 0 ; i < strFilesDirs.length ; i ++ ) { if ( strFilesDirs[i].isDirectory ( ) ) System.out.println ( "Directory: " + strFilesDirs[i] ) ; else if ( strFilesDirs[i].isFile ( ) ) System.out.println ( "File: " + strFilesDirs[i] + " (" + strFilesDirs[i].length ( ) + ")" ) ; ------------------------------------------------- This is what I am using, the problem is to delete the particular content from a sub directory. Such As: Systems01 ---Alpha -----Kilo -------Temp I need to delete the contents of the Temp Directory! Alpha is a random name, but the inside structure is going to be same (Kilo>Temp) How about writting a method that recursivele deletes everything .. maybe recursion would do the job? Christian >> gaur.rit...@gmail.com wrote: >>> I am looking for a code to read sub directories that are created [quoted text clipped - 35 lines] > Alpha is a random name, but the inside structure is going to be same > (Kilo>Temp) Does it need to be a Java program? I'm asking because usually this can be easily done by standard tools available on your operating system ("del" on windows or "rm -rf", "find ... | xargs rm" on Unixes). Kind regards robert Hi, Here's the code: http://www.rgagnon.com/javadetails/java-0483.html Probably better than using Runtime.exec which would be less portable... > >> gaur.rit...@gmail.com wrote: > >>> I am looking for a code to read sub directories that are created [quoted text clipped - 43 lines] > > robert >YA! Thats True, but I also need to delete the contents inside them. you mean wipe the file for security? When you delete the file the sectors it occupies are put on the free space chain to be reused. normally that is sufficient. The CIA can recover data even if you wipe several times. See http://mindprod.com/jgloss/wipe.html -- Roedy Green Canadian Mind Products The Java Glossary http://mindprod.com >> gaur.rit...@gmail.com wrote: >>> I am looking for a code to read sub directories that are created [quoted text clipped - 33 lines] > Alpha is a random name, but the inside structure is going to be same > (Kilo>Temp) You can recurse through multiple levels of directories. If you have an "order of delete" problem, then put the to be deleted stuff in a collection in the correct order and delete from that in the end. Arne >Next time I will start my computer these sub directories will be >different (alpha,qwerty....), so I need to make a generalize program >to delete these directories as well as contents. for code to do it, see http://mindprod.com/products1.html#BATIK -- Roedy Green Canadian Mind Products The Java Glossary http://mindprod.com Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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