title: Using trim() in Java to remove parts of an ouput
body: <p>I have some code I wrote that outputs a batch file output to a jTextArea. Currently the batch file outputs an active directory query for the computer name, but there is a bunch of stuff that outputs as well that I want to be removed from the output from the variable String trimmedLine. Currently it's still outputting everything else and I can't figure out how to get only the computer name to appear.</p>
  
  <p>Output: "CN=FDCD111304,OU=Workstations,OU=SIM,OU=Accounts,DC=FL,DC=NET"</p>
  
  <p>I want the output to instead just show only this: </p>
  
  <pre><code>FDCD111304
  </code></pre>
  
  <p>Can anyone show me how to fix my code to only output the computer name and nothing else?
  Look at console output (Ignore top line in console output)
  <img src="https://i.stack.imgur.com/R8Jkd.png" alt="Look at console output"></p>
  
  <pre><code>    btnPingComputer.addActionListener(new ActionListener() {
  
          public void actionPerformed(ActionEvent arg0) {
  
              String line;
              BufferedWriter bw = null;
              BufferedWriter writer =null;
              try {
                  writer = new BufferedWriter(new FileWriter(tempFile));
              } catch (IOException e1) {
                  // TODO Auto-generated catch block
                  e1.printStackTrace();
              }
              String lineToRemove = "OU=Workstations";
              String s = null;
              Process p = null;
  
              try {
  
                  p = Runtime.getRuntime().exec("c:\\computerQuery.bat");
  
              } catch (IOException e) {
  
                  // TODO Auto-generated catch block
  
                  e.printStackTrace();
  
              }
              StringBuffer sbuffer = new StringBuffer(); // new trial
              BufferedReader in = new BufferedReader(new InputStreamReader(p
                      .getInputStream()));
  
              try {
  
                  while ((line = in.readLine()) != null) {
  
                      System.out.println(line);
  
                      textArea.append(line);
                      textArea.append(String.format("  %s%n", line));
                      sbuffer.append(line + "\n");
                      s = sbuffer.toString();
                      String trimmedLine = line.trim();
                      if(trimmedLine.equals(lineToRemove)) continue;
                      writer.write(line + System.getProperty("line.separator"));
                  }
                  fw.write("commandResult is " + s);
                   String input = "CN=FDCD511304,OU=Workstations,OU=SIM,OU=Accounts,DC=FL,DC=NET";
                      Pattern pattern = Pattern.compile("(.*?)\\=(.*?)\\,");
                      Matcher m = pattern.matcher(input);
  
                      while(m.find()) {
  
                          String currentVar = m.group().substring(3, m.group().length() - 1);
                          System.out.println(currentVar); //store or do whatever you want
                      }
              } catch (IOException e) {
  
                  // TODO Auto-generated catch block
  
                  e.printStackTrace();
  
              } finally
  
              {
                  try {
                      fw.close();
  
                  }
  
                  catch (IOException e) {
                      // TODO Auto-generated catch block
                      e.printStackTrace();
                  }
              }
  
              try {
  
                  in.close();
  
              } catch (IOException e) {
  
                  // TODO Auto-generated catch block
  
                  e.printStackTrace();
  
              }
  
          }
  
      });
  </code></pre>