TaskManager for linux - Does Java Swing work on Linux?

I am to develop a Task Manager for Linux and is in the initial stages. First I implemented it in Java Eclipse in the Windows platform, and it works just fine. It doesn't work in the Linux platform. I've used a combination of Java/Swing. "tasklist.exe" in windows works perfectly. "ps-aux" in linux doesnt work. Code: ``` package test.t100.t001; import java.awt.*; import java.awt.event.KeyEvent; import java.io.BufferedReader; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintStream; import javax.swing.*; public class TabbedPaneDemo extends JPanel { private static final long serialVersionUID = 1L; Integer i; JTextArea output = new JTextArea(); public static void main(String args[]) { SwingUtilities.invokeLater(new Runnable() { public void run() { JFrame frame = new JFrame("TabbedPaneDemo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.add(new TabbedPaneDemo(), BorderLayout.CENTER); frame.pack(); frame.setVisible(true); } }); } private String getDetails() throws IOException { //fn(); String line; String result = ""; PrintStream p; Process p1 = Runtime.getRuntime().exec("tasklist.exe"); // read from a process BufferedReader input = new BufferedReader( new InputStreamReader(p1.getInputStream())); while ((line = input.readLine()) != null) { //System.out.println(line); output.append(line + "\n"); result += line+"\n"; //p.println (line); //textarea.setVisible(true); } //msgBox(result); //p.close(); input.close(); return result; } public TabbedPaneDemo() { super(new GridLayout(1, 1)); JTabbedPane tabbedPane = new JTabbedPane(); ImageIcon icon = createImageIcon("images"); JComponent panel1 = makeTextPanel("tasklist"); tabbedPane.addTab("tasks", icon, panel1, "ta"); // add it to something! panel1.add(new JScrollPane(output)); tabbedPane.setMnemonicAt(0, KeyEvent.VK_1); JComponent panel2 = makeTextPanel("windows"); tabbedPane.addTab("wins", icon, panel2, "wi"); tabbedPane.setMnemonicAt(1, KeyEvent.VK_2); add(tabbedPane);//`enter code here` tabbedPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT); try { String s = getDetails(); output.setText(s); } catch(IOException e) { e.printStackTrace(); } } public static void msgBox(String msg) { javax.swing.JOptionPane.showConfirmDialog((java.awt.Component) null, msg, "WindowsUtils", javax.swing.JOptionPane.DEFAULT_OPTION); } protected JComponent makeTextPanel(String text) { JPanel panel = new JPanel(false); JLabel filler = new JLabel(text); filler.setHorizontalAlignment(JLabel.CENTER); panel.setLayout(new GridLayout(1, 1)); panel.add(filler); return panel; } protected static ImageIcon createImageIcon(String path) { java.net.URL imgURL = TabbedPaneDemo.class.getResource(path); if (imgURL != null) { return new ImageIcon(imgURL); } else { System.err.println("Couldn't find file: " + path); return null; } } } ```