JTable sort the content of a column

Here is the sample code

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Collections;
import java.util.Vector;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.table.DefaultTableModel;

public class NewJFrame extends javax.swing.JFrame {
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable jTable1;
    private MyTableModel tableModel;
 
    public NewJFrame() {
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();
        jScrollPane1.setViewportView(jTable1);
        getContentPane().add(jScrollPane1);
     
        JButton button = new JButton("Sort Fruit");
        JPanel panel = new JPanel();
        panel.add(button, null);
        this.add(panel, BorderLayout.SOUTH);

        setPreferredSize(new Dimension(500,300));  
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        pack();
     
        Object[] headers = {"Item", "Fruit"};
        tableModel = new MyTableModel();
        tableModel.setColumnIdentifiers(headers);
        SortableVector row1 = new SortableVector();
        row1.add("Item1");
        row1.add("Papaya");
        SortableVector row2 = new SortableVector();
        row2.add("Item2");
        row2.add("Orange");
        SortableVector row3 = new SortableVector();
        row3.add("Item3");
        row3.add("Apple");
        tableModel.addRow(row1);
        tableModel.addRow(row2);
        tableModel.addRow(row3);
     
        jTable1.setModel(tableModel);
     
        button.addActionListener(new ActionListener(){
           public void actionPerformed(ActionEvent e){
               tableModel.sort();
               tableModel.fireTableDataChanged();
           }
        });
    }
 
    public class MyTableModel extends DefaultTableModel {
        public void sort() {
            Vector<SortableVector> data = getDataVector();
            Collections.sort(data);
        }
    }
 
    public class SortableVector<E> extends Vector implements Comparable {

        public SortableVector() {
        }

        @Override
        public int compareTo(Object o) { //sort on column 1
            Vector row2 = (SortableVector) o;
            String value1 = (String)get(1);
            String value2 = (String)row2.get(1);
         
            return value1.compareTo(value2);
        }
    }

Further Readings:
1. JTable sort by clicking column header

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