Re: compare file size with online file size

From:

"tiewknvc9" <aotemp@hotmail.com>

Newsgroups:

comp.lang.java.programmer

Date:

29 Sep 2006 22:49:15 -0700

Message-ID:

<1159595355.000737.177740@i3g2000cwc.googlegroups.com>

unfortunately Im trying to avoid webstart (I dont like the whole code
signing thing)

So I created a class... something like this to compare the file sizes

//get online file size
        URL url;
        URLConnection conn;
        long lSizeOfOnlineFile = 0;
        long lSizeClientFile = filClientFile.length();
        System.out.println("\nSize of Client file: " + lSizeClientFile + "
" + filClientFile.getAbsolutePath());
        try {
          url = new URL(strRemoteFile);
          conn = url.openConnection();
          lSizeOfOnlineFile = conn.getContentLength();
          if(lSizeOfOnlineFile < 0){
             System.out.println("Could not determine file size.");
          }else{
            System.out.println("\nSize of Online file: " +
lSizeOfOnlineFile);
          }
          conn.getInputStream().close();
        }
        catch(Exception e) {
          e.printStackTrace();
        }

        //compare and act if files modification date are different
        if (filClientFile == null){
            System.out.println("filClientFile = null");
        }

        if (lSizeOfOnlineFile != lSizeClientFile){

Andrew Thompson wrote:

tiewknvc9 wrote:
..

....in
order to update the file on the users computer if neccessary.

WebStart can handle that (for data files, as well as classes)
for the user automatically and relatively painlessly - with a
progress dialog.

Andrew T.