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PO
 

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    <p>Your problem is that your comparing Strings with <code>==</code>. Use the <code>equals(...)</code> method instead.</p> <ul> <li><code>==</code> compares if two variables refer to the same object -- something you don't care about. Thus two String variables can hold the same word but not be deemed equal by this operation.</li> <li>the <code>equals(...)</code> or <code>equalsIgnoreCase(...)</code> method checks if two String variables hold the same chars in the same order, and that you <strong>do</strong> care about.</li> </ul> <p>So not:</p> <pre><code>if (e.getActionCommand() == "next") { // ... } </code></pre> <p>but rather:</p> <pre><code>if ("next".equals(e.getActionCommand())) { // ... } </code></pre> <p>or if you don't care about case:</p> <pre><code>if ("next".equalsIgnoreCase(e.getActionCommand())) { // ... } </code></pre> <p><strong>Edit 1</strong><br> Next, once your JTable has hold of the data, changing the data will likely have no effect on the JTable. So here you change the data array:</p> <pre><code>int i=0; public void WriteMonitorData (String IP, String PC_NAME, String ttl, String gw) { data[i][0]=IP; data[i][1]=PC_NAME; data[i][2]=ttl; data[i][3]=gw; i++; table.repaint(); scrollPane.repaint(); } </code></pre> <p>But this array has already been passed into the JTable, is now part of its model and has been changed into a Vector in all likelihood. </p> <p>To see a change in your JTable's representation of the data, you must change the data held by the table's <strong><em>model</em></strong>. I suggest that you use a DefaultTableModel to hold your data in the JTable and then in your method above (which should begin with a lower case letter), you change the data held by the model. </p> <p>Also, regardless if your <code>if</code> blocks work or not, don't use <code>==</code> to compare Strings as this will bite you, if not now, soon.</p>
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    1. POJtable/JScrollPanel won't refresh (update data)
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    1. USHovercraft Full Of Eels
    1. USHovercraft Full Of Eels
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    1. COActionListener is working fine. There's no problem with it
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    2. CO@user1336646: then please do tell us what *isn't* working fine. The details *are* very important.
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    3. COAction listeners are working fine. problem is that table data is not refreshing/updating...
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