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    <p>use <code>clone()</code> method thats create <strong>exact copy of object</strong> what you want to clone. To allow cloning your class must implement interface <code>Cloneable</code>. Then you must <strong>override</strong> clone method from interface which you implements.</p> <p><strong>Little example:</strong></p> <pre><code>public class TableClass implements Cloneable { private DefaultTableModel model; @Override public Object clone() { DefaultTableModel cloned = null; try { cloned = (DefaultTableModel) super.clone(); } catch (CloneNotSupportedException ex) { Logger.getLogger(TableClass.class.getName()).log(Level.SEVERE, null, ex); } return cloned; } </code></pre> <p>Because of <code>clone()</code> method returns instance of <code>Object</code>, you must cast to type of your object: <code>cloned = (DefaultTableModel) super.clone()</code></p> <p>So this is how to work <code>clone()</code>. Now you can implement your own tableMode.</p> <p><strong>Basic example:</strong></p> <pre><code>public class YourTableModel extends AbstractTableModel implements Cloneable { private static final String[] columnNames = {"URL", "Progress", "Size", "Status"}; private static final Class[] columnClasses = {String.class, String.class, String.class, String.class}; private List&lt;T&gt; yourData; @Override public Object clone() { YourTableModel cloned = null; try { cloned = (YourTableModel) super.clone(); } catch (CloneNotSupportedException ex) { Logger.getLogger(TableClass.class.getName()).log(Level.SEVERE, null, ex); } return cloned; } @Override public Object getValueAt(int row, int col) { switch (col) { case 0: return yourData.getName(); case 1: return yourData.getAge(); case 2: return yourData.getAddress(); case 3: return yourData.getSomethingElse(); } return ""; } @Override public int getColumnCount() { return columnNames.length; } @Override public int getRowCount() { return downloadList.size(); } @Override public String getColumnName(int col) { return columnNames[col]; } public Class getClassName(int col) { return columnClasses[col]; } } </code></pre> <p>This way your implement your own model also clone() method and then you can cloning this objects. But there is also other approaches like wrote <strong>@vizier</strong></p> <p>Hope it helps!</p>
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    1. POcloning 1 member variable within a java class
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    1. USSimon Dorociak
    1. USSimon Dorociak
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    1. COI really appreciate your help. I am having a hard time understanding exactly what you are saying, though. Would you mind inserting your code where it should be in the sample class I put in my original question? Thanks.
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      1. USRiggster
    2. COYou want to create copy of DefaultTableModel, in the way of reference like you wrote (model2 = model) this is only one object but you want to create two exact copies of one object and then you can do whatever want to do. this is sample how to work clone() method.
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      1. USSimon Dorociak
 

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