how to add items to a JTable using a loop

Question

I came up with this loop here:

    for(int i = 0; i < memberArrayList.size(); i++){
        int j = 0;
        memberTable.setValueAt(memberArrayList.get(i).getFirstName(), i, j);
        j++;
        memberTable.setValueAt(memberArrayList.get(i).getLastName(), i, j);
        j++;
        memberTable.setValueAt(memberArrayList.get(i).getEmail(), i, j);
        j++;
        memberTable.setValueAt(memberArrayList.get(i).getPhoneNumber(), i, j);
        j++;
        memberTable.setValueAt(memberArrayList.get(i).getLevel(), i, j);
    }

It works but I'm sure there is a better way

Answer 1

The answer will depend on what type of TableModel you are using, for example, if you are using a DefaultTableModel you could use something like...

DefaultTableModel memberTable= ...;

for(int i = 0; i < memberArrayList.size(); i++){
    Object[] rowData = new Object[]{
        memberArrayList.get(i).getFirstName(),
        memberArrayList.get(i).getLastName(), 
        memberArrayList.get(i).getEmail(), 
        memberArrayList.get(i).getPhoneNumber(),
        memberArrayList.get(i).getLevel()
        };
    memberTable.addRow(rowData);
}

This assumes that you only want to add rows to the end of the table model ;)

Personally, I'd prefer to add each member to the table model as a single entity, but that's just me

Take a look at How to Use Tables for more details...

Answer 2

Swing components are using MVC pattern. JTable is the view, TableModels are the model that contains data.

you can subclass AbstractTableModel to achieve your goal.

public class MyTableModel extends AbstractTableModel {
    // override these methods:
    // getColumnCount, getRowCount, getValueAt
    // and add data manipulation methods
}

then your table is created using MyTableModel

MyTableModel mtm = new MyTableModel(......);
JTable table = new JTable(mtm);

then call data manipulation methods in mtm. something like

mtm.addPerson(new Person(......));