How do I get values of another cell if a checkbox is selected of the corresponding checkbox in jtable?

Question

How do I get values of other cells if a checkbox is selected of the corresponding JCheckBox in JTable. I add JCheckbox in JTable:

JCheckBox checkBox = new javax.swing.JCheckBox();
jTable1 = new javax.swing.JTable();

jTable1.setModel(new javax.swing.table.DefaultTableModel(
    new Object [][] {    
    },
    new String [] {
        "Station", "OperationName", "TliScantime", "StartTime", "Completedtime",
        "TliScanTime-StartTime", "StartTime-CompletedTime", "Select"
    }
) {
    Class[] types = new Class [] {
        java.lang.String.class, java.lang.String.class, java.lang.String.class,
        java.lang.String.class, java.lang.String.class, java.lang.String.class,
        java.lang.String.class, java.lang.Boolean.class
    };

    public Class getColumnClass(int columnIndex) {
        return types [columnIndex];
    }
});
jTable1.getColumn("Select").setCellEditor(new DefaultCellEditor(checkBox));
jTable1.setAutoResizeMode(javax.swing.JTable.AUTO_RESIZE_OFF);
jTable1.getColumnModel().getColumn(0).setPreferredWidth(120);
jTable1.getColumnModel().getColumn(1).setPreferredWidth(100);
jTable1.getColumnModel().getColumn(2).setPreferredWidth(80);
jTable1.getColumnModel().getColumn(3).setPreferredWidth(100);
jTable1.getColumnModel().getColumn(4).setPreferredWidth(100);
jTable1.getColumnModel().getColumn(5).setPreferredWidth(180);
jTable1.getColumnModel().getColumn(6).setPreferredWidth(180);

jScrollPane1.setViewportView(jTable1);

Now I want to do that when some one click on the JCheckbox, it will took the value from TliScanTime-StartTime, StartTime-CompletedTime colum of the selected rows means when JCheckbox is checked.

And it will show the average time of TliScanTime-StartTime, StartTime-CompletedTime in the two separated JLables. And value will be changed dynamically, meaning the average time is changed on every click on the checkbox. I add a checkbox on every rows is created.

What would be some help with some coding example be?

By "selected rows," do you mean "all rows having the checkbox selected" or "all rows in a `MULTIPLE_INTERVAL_SELECTION` selection model?" — trashgod, Aug 04 '11 at 18:43
please don't show code that's unrelated to the problem (f.i. column sizing has nothing to do with it) — kleopatra, Aug 05 '11 at 10:02

score 1 · Answer 1 · answered Aug 04 '11 at 18:10

1

You may be able to adapt the approach shown here.

answered Aug 04 '11 at 18:10

trashgod

203,806
29
246
1,045

It is done by cell rendering am i right can i do this using any event handling.I want to try this using jTable1.getSelectionModel().addListSelectionListener(new javax.swing.event.ListSelectionListener() { public void valueChanged(ListSelectionEvent event ) { // if(jTable1.getValueAt(0,7).equals(null)){ Object b=jTable1.getValueAt(0,7); System.out.println(b); //} } }); – moin Aug 04 '11 at 18:17
No, a `CellEditor` is required effect a change in the model, and the default editor does not have the behavior you require. Please edit your question to show code, which is hard to read in a comment. – trashgod Aug 04 '11 at 18:23

score 1 · Answer 2 · edited Nov 24 '19 at 21:08

For JTable, you have to implement TableModelListener.

For example,

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;

public class TableCheckboxListenerExample {

    public static void main(String[] args) {
        try {
            JFrame frame = new JFrame();
            frame.setDefaultCloseOperation(JDialog.EXIT_ON_CLOSE);
            DefaultTableModel model = new DefaultTableModel(new Object[][] {
                        {Boolean.FALSE, "Row 1"},
                        {Boolean.TRUE, "Row 2"}},
                    new String[]{"col1", "col2"}) {

                private static final long serialVersionUID = 1L;

                @Override
                public Class<?> getColumnClass(int columnIndex) {
                    if (getRowCount() > 0 && getValueAt(0, columnIndex) != null) {
                        return getValueAt(0, columnIndex).getClass();
                    }
                    return super.getColumnClass(columnIndex);
                }
            };
            model.addTableModelListener(new TableModelListener() {

                @Override
                public void tableChanged(TableModelEvent e) {
                    int row = e.getFirstRow();
                    int column = e.getColumn();
                    TableModel model = (TableModel) e.getSource();
                    Object data = model.getValueAt(row, column);
                    if (data instanceof Boolean) {
                        System.out.println("Value changed in Row: " + row + " Column: " + column + " New Value = " + data);
                    }
                }
            });
            JTable table = new JTable(model);
            frame.add(new JScrollPane(table));
            frame.pack();
            frame.setVisible(true);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private TableCheckboxListenerExample() {
    }
}

How do I get values of another cell if a checkbox is selected of the corresponding checkbox in jtable?

2 Answers2

Linked