java - Size limit on BufferedReader exceeded? -

in java 6 webapp, attempting retrieve large amount of output executed command. i've "borrowed/stolen/based" on javaworld article. problem facing length appears exceed size limit since output lopped off. i've output data file can see size of returned, , 32k (32768). i've experimented changing default size of buffer (see bufferedreader constructor), have not observed change length of data returned no matter value have buffered-size (very small large).

any advice appreciated!

public class streamgobbler extends thread {  private inputstream is; private string type; private list<string> output;  public streamgobbler(inputstream is, string type) {     this.is = is;     this.type = type; }  @override public void run() {     try {         inputstreamreader isr = new inputstreamreader(is);         bufferedreader br = new bufferedreader(isr);         string line = null;         this.output = new arraylist<string>();         while ((line = br.readline()) != null) {             this.getoutput().add(line + "\n");             system.out.println(type + ">" + line);         }         br.close();     } catch (ioexception ioe) {         system.err.println("error: " + ioe.getmessage());     } }  /**  * @return output  */ public list<string> getoutput() {     return output; } 

}

public class jobclassads {  private string condor_history = "condor_history"; private string condor_history_xml = condor_history + " -xml"; private string condor_history_long = condor_history + " -long";  public string gethistory() {     try {         runtime runtime = runtime.getruntime();         string exec = condor_history_long;         process process = runtime.exec(exec);         system.out.println("running " + exec + " ...");          // error message         streamgobbler errgobbler = new streamgobbler(process.geterrorstream(), "error");          // output         streamgobbler outgobbler = new streamgobbler(process.getinputstream(), "output");          thread outthread = new thread(outgobbler);         thread errthread = new thread(errgobbler);          outthread.start();         errthread.start();          outthread.join();         errthread.join();          /*         string line = null;          while ((line = input.readline()) != null) {             system.out.println(line);             content.append(line);         }           *          */          int exitval = process.waitfor();          list<string> output = outgobbler.getoutput();         string inputstring = "";         (string o : output) {             inputstring += o;         }          system.out.println(exec + " exited error code " + exitval);          bufferedwriter out = new bufferedwriter(new filewriter("/tmp/history_result.xml"));         out.write(inputstring);         out.close();         return inputstring;      } catch (exception e) {         system.err.println(e.getmessage());         return null;     } } 

the problem not bufferedreader's buffer size.

i think real cause external command doing. suspect bailing out without flushing stdout stream. note "gobbling" not outputting command's stderr stream. that's may find evidence pointing real cause of problem.

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by way, using streamgobbler class in suboptimal fashion. extends thread intended way use is:

    steamgobbler sg = new streamgobbler(...);     sg.start();     sg.join(); 

but doing this:

    steamgobbler sg = new streamgobbler(...);     thread th = new thread(sg);     th.start();     th.join(); 

it works ... because thread is-a runnable.