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PrintWriter out - Changing location of output files

Posted on 2004-10-07
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Last Modified: 2010-03-31
Hi!

This func writes output files in the where input files are, but I am trying to create output folder for output files upper dir and place all output files there. Any ideas?
BTW, Does ‘out’ write output files current dir?

Thanks in advance,

+++++++++++++++++
private void saveHeader(File file, String header, int length) {
            if (debug)
                  System.out.println(header);
            PrintWriter out;
            try {
                  File outf = new File(getOutputPath(file));//with filename.hdr
                  System.out.println("outf: " + outf);
                  out = new PrintWriter(new FileWriter(outf));
            } catch (NullPointerException ex) {
                  System.out.println("File Not Found ...");
                  ex.printStackTrace();
                  return;
            } catch (Exception ex) {
                  System.err.println("Error in File Name ...");
                  ex.printStackTrace();
                  return;
            }

            out.print(header);
            out.close();

            
            try {
                  System.out.println("***\nSuccessfully Wrote:\n" +
                  getOutputPath(file) + "\nwith " + length + " slices in directory.\n");
            } catch (Exception ex) {}

      }
0
Comment
Question by:dkim18
  • 6
  • 5
  • 3
  • +1
15 Comments
 
LVL 3

Expert Comment

by:nesnemis
ID: 12253990
output to parent directory
    use File outf = new File("./"+getOutputPath(file));//with filename.hdr
output to parent directory
    use File outf = new File("./"+getOutputPath(file));//with filename.hdr
output to sub-directory
    use File outf = new File("subdir/"+getOutputPath(file));//with filename.hdr
output to subdir on parent directory
    use File outf = new File("./subdir/"+getOutputPath(file));//with filename.hdr


0
 
LVL 86

Expert Comment

by:CEHJ
ID: 12254205
Change

>>File outf = new File(getOutputPath(file));//with filename.hdr

to

File outf = new File(".." + File.separatorChar + getOutputPath(file));//with filename.hdr
0
 

Author Comment

by:dkim18
ID: 12254371
"outf" is hdr file and I cannot change that.
I created temp dir in upper dir. Can I put output file(outf) in that dir if i pass in absolute pass as parameter?
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LVL 86

Expert Comment

by:CEHJ
ID: 12254486
Try

File outf = new File(".." + File.separatorChar + temp + File.separatorChar + getOutputPath(file));//with filename.hdr
0
 

Author Comment

by:dkim18
ID: 12254605
hm...it doesn't work. it doesn't even create output files...
I even tried

File outf = new File("C:\\" + getOutputPath(file));

but didn't work...
0
 
LVL 92

Expert Comment

by:objects
ID: 12254730
Sound like you be better off changing the path return by getOutputPath().
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 12254827
Please post the output of

System.out.println(outf.getAbsolutePath());

using the code i posted
0
 

Author Comment

by:dkim18
ID: 12255300
cehj,

i used the following code...

++++++++++
File outf = new File(getOutputPath(file));//with filename.hdr
System.out.println("outf.getAbsolutePath() : " + outf.getAbsolutePath());

+++++++++++=
and i got the following result...
outf.getAbsolutePath() : C:\scans_test\Scans_for_Header_ext\cd_133\barrett040429\2043056021\005\002.hdr

btw, this is not my code and getOutputPath(file) is not really get path. it just add .hdr...

+++++++++++
private String getOutputPath(File file) throws Exception {
            String fileName = file.getAbsolutePath();
            //String fileName = outPath.getAbsolutePath();

            if ((fileName.substring(fileName.length()- 1)).equals(System.getProperty("file.separator")))
                  fileName = fileName.substring(0,fileName.length()-1);

            if (debug)
                  System.out.println("absolutePath: " + fileName);
            
            //fileName = fileName.substring(0, fileName.lastIndexOf("\\")+1);

            //fileName = fileName + file;
            return fileName + ".hdr";
      }
0
 
LVL 92

Expert Comment

by:objects
ID: 12255311
looks like you're making thing far more complicated for yourself than they need to be.
What exactly is iot you need to achieve? ie. can you show me what a certain input should produce?
0
 

Author Comment

by:dkim18
ID: 12255609
to make it simple, let say there are two img files under:
C:\scans_test\Scans_for_Header_ext\cd_133\barrett040429\2043056021\005\001
C:\scans_test\Scans_for_Header_ext\cd_133\barrett040429\2043056021\005\002

and I need to create corresponding output file(.hdr) and put them in new dir.

C:\scans_test\Scans_for_Header_ext\cd_133\barrett040429\2043056021\005_output\001.hdr
C:\scans_test\Scans_for_Header_ext\cd_133\barrett040429\2043056021\005_output\002.hdr

Now, this program does create 001.hdr and 002.hdr under this dir
C:\scans_test\Scans_for_Header_ext\cd_133\barrett040429\2043056021\005

I need to create them under this dir
C:\scans_test\Scans_for_Header_ext\cd_133\barrett040429\2043056021\005_output

0
 
LVL 92

Accepted Solution

by:
objects earned 800 total points
ID: 12255734
try:

private static String getOutputPath(File file) throws Exception {
          String fileName = file.getParentFile().getAbsolutePath();
          return fileName + "_output/" + file.getName() + ".hdr";
}      
0
 

Author Comment

by:dkim18
ID: 12255798
it didn't even create output files nor dir.
0
 
LVL 92

Expert Comment

by:objects
ID: 12255811
sorry forgout to mention you'll also need to create the directory if it doesn't already exist.

 File outf = new File(getOutputPath(file));//with filename.hdr
 File outdir = outf.getParentFile();
 if (!outdir.exists())
 {
     outdir.mkdirs();
 }
0
 

Author Comment

by:dkim18
ID: 12255855
superb!
thanks!!
0
 
LVL 92

Expert Comment

by:objects
ID: 12255859
no worries :)
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