Sort the elements of a table in java

[Adrina_g]

Hello, I am creating a project in java and while working on it, I want to sort the data from my database table. If anyone from you having idea about the sorting from the data of the table then please help me to sort the data. I have tried to sort it with the some logic by using the code, but it is not working perfectly all of the time. So, if you are having knowledge about the sorting technique technique in java then please provide help to me.

[Katty]

Table sorting and filtering is managed by a sorter object. The easiest way to provide a sorter object is to set autoCreateRowSorter bound property to true:

    JTable table = new JTable();
    table.setAutoCreateRowSorter(true);

This action defines a row sorter that is an instance of javax.swing.table.TableRowSorter. This provides a table that does a simple locale-specific sort when the user clicks on a column header.

[kelfro]

Hello, If you want to sort the table in a swing application then you need to make use of Sorting tables in your application. If you are using the JDK 1.6 then it is having an additional feature of the sorting and filtering mechanism to JTable which makes use of the RowSorter. For solving the sorting problem Sun defines two classes as below:

• TableMap
• TableSorter

[Zecho]

I have the code below which I have created in JDK 6 for sorting the elements of a table in java:

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

public class Sorting {
  public static void main(String[] args) {
    Object[][] obj = { { "A", 5 }, { "B", 2 }, { "C", 4 }, { "D", 8 } };
    String cName[] = { "Item", "Value" };
    TableModel tablemodel = new DefaultTableModel(obj, cName) {
      public Class<?> getColumnClass(int column) {
        return getValueAt(0, column).getClass();
      }
    };
    JTable table = new JTable(tablemodel);

    TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(tablemodel);
    table.setRowSorter(sorter);

    JScrollPane spane = new JScrollPane(table);
    JFrame frm = new JFrame("Sorting Table");
    frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frm.add(spane);
    frm.setSize(300, 200);
    frm.setVisible(true);
  }
}

[Reegan]

It is quiet simple to sort the data from the table. You just need to add the following line of code in your program.

JTable testing = new JTable(model);
RowSorter<TableModel> sorter =  new TableRowSorter<TableModel>(model);
testing.setRowSorter(sorter);