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POJTable not getting populated properly
 

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    <p>So after many many edits to my questions, I am still unable to solve this problem. I have a .txt file called ProcessList.txt which is populated every time ps -e command executes inside my Java app. Here's the code I used to redirect the output of ps -e to ProcessList.txt.</p> <pre><code>import java.io.*; import java.util.StringTokenizer; public class GetProcessList { private String GetProcessListData() { Process p; Runtime runTime; String process = null; try { System.out.println("Processes Reading is started..."); //Get Runtime environment of System runTime = Runtime.getRuntime(); //Execute command thru Runtime // p = runTime.exec("tasklist"); // For Windows p=runTime.exec("ps -e"); //For Linux //Create Inputstream for Read Processes InputStream inputStream = p.getInputStream(); InputStreamReader inputStreamReader = new InputStreamReader(inputStream); BufferedReader bufferedReader = new BufferedReader(inputStreamReader); //Read the processes from sysrtem and add &amp; as delimeter for tokenize the output String line = bufferedReader.readLine(); process = "&amp;"; while (line != null) { line = bufferedReader.readLine(); process += line + "&amp;"; } //Close the Streams bufferedReader.close(); inputStreamReader.close(); inputStream.close(); System.out.println("Processes are read."); } catch (IOException e) { System.out.println("Exception arise during the read Processes"); e.printStackTrace(); } return process; } void showProcessData() { try { //Call the method For Read the process String proc = GetProcessListData(); //Create Streams for write processes //Given the filepath which you need.Its store the file at where your java file. OutputStreamWriter outputStreamWriter = new OutputStreamWriter(new FileOutputStream("ProcessList.txt")); BufferedWriter bufferedWriter = new BufferedWriter(outputStreamWriter); //Tokenize the output for write the processes StringTokenizer st = new StringTokenizer(proc, "&amp;"); while (st.hasMoreTokens()) { bufferedWriter.write(st.nextToken()); //Write the data in file bufferedWriter.newLine(); //Allocate new line for next line } //Close the outputStreams bufferedWriter.close(); outputStreamWriter.close(); } catch (IOException ioe) { ioe.printStackTrace(); } } } </code></pre> <p>It made a file in my workspace called ProcessList.txt. It looks something like this having 4 columns:</p> <pre><code>1 ? 00:00:00 init 2 ? 00:00:00 kthreadd 3 ? 00:00:00 ksoftirqd/0 5 ? 00:00:00 kworker/u:0 6 ? 00:00:00 migration/0 </code></pre> <p>Now once the ProcessList.txt file is created, I redirected the contents of this .txt file to JTable as:</p> <pre><code>import java.io.*; import java.awt.*; import java.util.*;import javax.swing.*; import java.awt.event.*; import javax.swing.table.*; public class InsertFileToJtable extends AbstractTableModel{ Vector data; Vector columns; private String[] colNames = {"&lt;html&gt;&lt;b&gt;PID&lt;/b&gt;&lt;/html&gt;","&lt;html&gt;&lt;b&gt;TTY&lt;/b&gt;&lt;/html&gt;","&lt;html&gt;&lt;b&gt;time&lt;/b&gt;&lt;/html&gt;","&lt;html&gt;&lt;b&gt;Process Name&lt;/b&gt;&lt;/html&gt;",}; public InsertFileToJtable() { String line; data = new Vector(); columns = new Vector(); try { FileInputStream fis = new FileInputStream("ProcessList.txt"); BufferedReader br = new BufferedReader(new InputStreamReader(fis)); StringTokenizer st1 = new StringTokenizer(br.readLine(), " "); while (st1.hasMoreTokens()) columns.addElement(st1.nextToken()); while ((line = br.readLine()) != null) { StringTokenizer st2 = new StringTokenizer(line, " "); while (st2.hasMoreTokens()) data.addElement(st2.nextToken()); } br.close(); } catch (Exception e) { e.printStackTrace(); } } public int getRowCount() { return data.size() / getColumnCount(); } public int getColumnCount() { return columns.size(); } public Object getValueAt(int rowIndex, int columnIndex) { return (String) data.elementAt((rowIndex * getColumnCount()) + columnIndex); } @Override public String getColumnName(int column) { return colNames[column]; } @Override public Class getColumnClass(int col){ return getValueAt(0,col).getClass(); } } </code></pre> <p>Here's how my output look so far (I would have uploaded the screen shot of the final output if I knew how to :( but here's a little idea of what the output Jtable looks so far.</p> <pre><code>============================= PID TTY TIME PROCESS NAME ============================= 2 ? 00:00:00 kthreadd 3 ? 00:00:00 ksoftirqd/0 5 ? 00:00:00 kworker/u:0 6 ? 00:00:00 migration/0 </code></pre> <p>Note that the contents of ProcessList.txt get redirected to the JTAble except the fact that the first line of ProcessList.txt file i.e</p> <pre><code> 1 ? 00:00:00 init </code></pre> <p>does not seem to be in the JTable output. Any help would be highly appreciated. I have posted many questions about this but came out without luck :(</p> <p>EDIT: Here's my constructor and main()</p> <pre><code>public void InterfaceFrame(){ setTitle("My Frame"); add(tabbedPane); Pack(); setVisible(true); </code></pre> <p>} </p> <pre><code>public static void main(String[] args) throws URISyntaxException, IOException, InterruptedException { panel.setSize(100,100); panel.add(table); model.fireTableStructureChanged(); table.setModel(model); InsertFileToJtable model = new InsertFileToJtable(); table.setPreferredScrollableViewportSize(new Dimension(500, 70)); table.setFillsViewportHeight(true); RowSorter&lt;TableModel&gt; sorter = new TableRowSorter&lt;TableModel&gt;(model); table.setRowSorter(sorter); JScrollPane scrollpane = new JScrollPane(table); panel.add(scrollpane, BorderLayout.CENTER); JButton button = new JButton("Show View"); panel.add( button, BorderLayout.SOUTH ); tabbedPane.addTab("Process",null,scrollpane,""); //////////////SOME OTHER TABS/////////////////////////// } </code></pre>
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    1. COYour code appears to be reading and discarding the first line of the file. If you don't want it to do that, then change your code.
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      1. USHovercraft Full Of Eels
    2. CO*"I have posted many questions about this but came out without luck :("* As mentioned [2 days ago](http://stackoverflow.com/q/13643907/418556), post an [SSCCE](http://sscce.org/). Getting a good answer is rarely about luck. It has more to do with asking a good question, and that often involves code in the form of an SSCCE.
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    3. CO@HovercraftFullOfEels "If you don't want it to do that, then change your code" That's what my question is.
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      1. USIngila Ejaz
 

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