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POPrint few stack trace lines while iterating through log file entries
 

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    <p>I'm creating a Log Filter application that will present a report of all the ERROR entries that were found in the application logs, I was wondering what would be the best method to present a few lines of the stack trace along with each error.</p> <p>The final result would be something like this:</p> <pre><code>+ ErrorA - ErrorB com.package.Class.method(Class.java:666) com.package.AnotherClass.ADifferentMethodMethod(Class.java:2012) com.thatOtherPackage.ThatClass.someOtherMethod(ThatClass.java:34) + ErrorC </code></pre> <p>Here's what I have so far:</p> <pre><code>public JSONArray processFiles(File[] files){ FileReader fr = null; BufferedReader br = null; JSONObject jFiles = new JSONObject(); JSONArray jaf = new JSONArray(); try { for (File file : files) { jFiles.put("fileName", file.getName()); boolean fileIsOk = true; try { fr = new FileReader(file); } catch (FileNotFoundException e) { //Thanks to Windows, there's no way to check file.canRead() //http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6203387 fileIsOk = false; } if(fileIsOk) { br = new BufferedReader(fr); String line = null; JSONObject jLogEntries = new JSONObject(); JSONArray jalog = new JSONArray(); int lineNum = 0; while ((line = br.readLine()) != null) { if (line.contains("| ERROR |")) { jLogEntries.put("line " + lineNum, line); ++lineNum; } **// TODO: Implement something to print the next 5 lines of the stack trace.** } lineNum = 0; jalog.add(jLogEntries); jFiles.put("logEntries", jalog); jaf.add(jFiles); } }// end of files iteration } catch (IOException e) { e.printStackTrace(); } catch (Exception e){ e.printStackTrace(); } return jaf; } </code></pre>
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    1. COWhats exactly the problem?
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    2. COI had defined a counter to keep track of the number of subsequent lines after finding the ERROR entry, then I was adding those line to my `jLogEntries` and restarting the counter. The problem is that I find this idea too messy and verbose.
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      1. UStheMarceloR
 

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