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plurals

POJava process never stops
primarykey
Id
13930470
data
AcceptedAnswerId
13930556
AnswerCount
3
ClosedDate
CommentCount
8
CommunityOwnedDate
CreationDate
2012-12-18T10:04:00.227
FavoriteCount
0
LastActivityDate
2012-12-18T10:31:53.510
LastEditDate
2012-12-18T10:31:53.510
LastEditorUserId
1844575
OwnerUserId
1844575
ParentId
0
PostTypeId
1
Score
1
ViewCount
1709
LastEditorDisplayName
text
Body
<p>I am trying to execute a process from my Java application, when I execute this process from the console it works right, but when I do getRuntime().exec() it starts but never ends, no exceptions, no exit values. The process I am trying to execute is pdftops.exe, an app that converts PDF files to PostScript. When I try to convert small files (executing from Java) it works OK, the problem is converting larger PDFs which may take longer (from 20 to 60 seconds). I think the problem may be that the execution time is too long. Here is the piece of code that calls the program (the command line is simplified, the input.pdf and output.ps are placed in a folder inside my home directory, and pdftops.exe is placed in Desktop):</p> <pre><code>String comando = "pdftops.exe input.pdf output.ps"; System.out.println("Executing "+comando); try { Process pr = Runtime.getRuntime().exec(comando); pr.waitFor(); System.out.println("Finished"); } catch (IOException ex){ ex.printStackTrace(); } catch(InterruptedException ex){ ex.printStackTrace(); } </code></pre> <p>EDIT: Reading the process' ErrorStream solves the problem:</p> <pre><code>try { System.out.println(comando); Process process = Runtime.getRuntime().exec(comando); String line; InputStream stderr = process.getErrorStream (); BufferedReader reader = new BufferedReader (new InputStreamReader(stderr)); line = reader.readLine(); while (line != null && ! line.trim().equals("--EOF--")) { System.out.println ("Stdout: " + line); line = reader.readLine(); } } catch (IOException ex){ ex.printStackTrace(); } </code></pre>
Tags
<java><process>
Title
Java process never stops
singulars
PostAcceptedAnswerId
1. PO
  singulars
  PostTypePostTypeId
  PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USJoel
UserOwnerUserId
1. USJoel
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
  singulars
  PostTypePostTypeId
  PTAnswer
2. PO
  singulars
  PostTypePostTypeId
  PTAnswer
3. PO
  singulars
  PostTypePostTypeId
  PTAnswer
VotesPostIdCreationDate
1. VO
  singulars
  PostPostId
  POJava process never stops
  UserUserId
  This table or related slice is empty.
  VoteTypeVoteTypeId
  VTUpMod
CommentsPostId

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