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2012-10-14T23:20:52.187
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The crucial thing to understand while working with JTable is that every JTable is internally backed by a TableModel. If you're new to using tables, I would suggest <a href="http://docs.oracle.com/javase/tutorial/uiswing/components/table.html" rel="nofollow">"How to Use Tables"</a> as a good place to start learning about the implementation Every table model basically implements the TableModel interface. For your scenario, you should look at creating your own table model, extending the <a href="http://docs.oracle.com/javase/7/docs/api/javax/swing/table/AbstractTableModel.html" rel="nofollow">AbstractTableModel</a> class. As per the javadoc, <blockquote> To create a concrete TableModel as a subclass of AbstractTableModel you need only provide implementations for the following three methods: public int getRowCount(); public int getColumnCount(); public Object getValueAt(int row, int column); </blockquote> So your implementation of TableModel will be minimally something like this [note that I said minimally because there're other methods of this class that you would also want to override, for example getColumnNames(...)]: <pre><code>import java.util.List; import javax.swing.table.AbstractTableModel; public class MyTableModel extends AbstractTableModel { private List<double[]> dataList; public MyTableModel(List<double[]> dataList){ this.dataList = dataList; } @Override public int getRowCount() { return dataList.size(); } @Override public int getColumnCount() { return (dataList.size() > 0) ? dataList.get(0).length : 0; } @Override public Object getValueAt(int rowIndex, int columnIndex) { if(rowIndex < dataList.size()){ double[] columns = dataList.get(rowIndex); if(columns.length > columnIndex){ return columns[columnIndex]; } } return null; } } </code></pre>
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1. POHow can I import the data in my array list to a JTable?
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1. USSujay
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.