Populate JTable Using List

Question

How will I populate a JTable with values from a List with an Object Type. My Code looks like this :

String[] columnNames = {"CLASS CODE",
        "TIME",
        "DAY",
        "ROOM",
        "PROFESSOR"};

    List<org.mine.ScheduleAttr> schedule = getStudSched(studNo);
    DefaultTableModel model = new DefaultTableModel();
    table.setModel(model);

    model.setColumnIdentifiers(columnNames);

I already have the columns, the list would come from the schedule variable ? How can I put that to my table considering these columns ?

hd1 · Accepted Answer · 2024-03-01 23:02:50Z

8

Take a look at DefaultTableModel. You could iterate over your List and create the Object array for each row.

for (ScheduleAttr s : schedule) {
  Object[] o = new Object[5];
  o[0] = s.getX();
  o[1] = s.getY();
  o[2] = s.getZ();
  o[3] = s.getA();
  o[4] = s.getB();
  model.addRow(o);
}

edited Mar 1, 2024 at 23:02

hd1

34.9k5 gold badges83 silver badges95 bronze badges

answered Jun 19, 2012 at 7:13

C12-H22-O11

5573 silver badges6 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Fred37b Over a year ago

The link DefaultTableModel is deprecated

hd1 Over a year ago

I just fixed the link, @Fred37b

Francisco Spaeth · Accepted Answer · 2012-06-19 07:04:37Z

You could use something similar to (just changing columns and values):

import java.awt.BorderLayout;
import java.util.ArrayList;
import java.util.List;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;

public class TestJFrame extends JFrame {
    private static final long serialVersionUID = 1L;

    public static void main(String[] args) {
        TestJFrame testJFrame = new TestJFrame();

        List<String> columns = new ArrayList<String>();
        List<String[]> values = new ArrayList<String[]>();

        columns.add("col1");
        columns.add("col2");
        columns.add("col3");

        for (int i = 0; i < 100; i++) {
            values.add(new String[] {"val"+i+" col1","val"+i+" col2","val"+i+" col3"});
        }

        TableModel tableModel = new DefaultTableModel(values.toArray(new Object[][] {}), columns.toArray());
        JTable table = new JTable(tableModel);
        testJFrame.setLayout(new BorderLayout());
        testJFrame.add(new JScrollPane(table), BorderLayout.CENTER);

        testJFrame.add(table.getTableHeader(), BorderLayout.NORTH);

        testJFrame.setVisible(true);
        testJFrame.setSize(200,200);
    }

}

The columns doesn't need to look like columns.toArray() because you already have an array of objects, so is just use it. At the end in order to use your columns the instruction looks like: TableModel tableModel = new DefaultTableModel(values.toArray(new Object[][] {}), columnNames);

Maguzu · Accepted Answer · 2013-05-31 06:57:56Z

0

try this

first make a iterator

Iterator itr = StringList.iterator();



 while(itr.hasNext()) {
                 Object element = itr.next();
                     int y=0;
                     for (y=0; y <=16 ; y++){
                    table_4.setValueAt(element, y, 0);

table_4 is your table name then set the row and column where you want to insert the string

answered May 31, 2013 at 6:57

Maguzu

4333 gold badges8 silver badges15 bronze badges

Collectives™ on Stack Overflow

Populate JTable Using List

3 Answers 3

2 Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

2 Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related