How to Delete a Row in JTable using JButton​

In this tutorial, we are going to see how to delete a row in JTable using Delete button. JTable is a subclass of JComponent class and it can be used to create a table with information displayed in multiple rows and columns.

When a value is selected in a JTable, a TableModelEvent is generated, which is handled by implementing the TableModelListener interface. We can add or insert a JButton​ for each row of a Jtable in a cell by customizing the code in DefaultTableModel or AbstractTableModel and we can also customize the code by implementing the TableCellRenderer interface and we have to redefine the getTableCellRendererComponent() method.

 

Java Program to Delete a Row in JTable using Delete button:

import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.CellEditorListener;
import java.awt.Component;
import java.awt.event.*;
import java.util.EventObject;

public class Main 
{
  public static void main(String[] args) 
  {  
    //JTable Header
    String[] columns = new String[] {"Id","Name","Address","Hourly rate"," "};

    //data for JTable in a 2D table
    Object[][] data = new Object[][] {
        {1, "Thomas", "Alaska", 20.0, " " },
        {2, "Jean", "Arizona", 50.0, " " },
        {3, "Yohan", "California", 30.0, " " },
        {4, "Emily", "Florida", 60.0, " " },
        {5, "Alex", "New York", 10.0, " " },
    };
    //define the model of JTable
    DefaultTableModel model = new DefaultTableModel(data, columns);
    //create a JTable with data
    JTable table = new JTable(model);

    //define our Renderer on the empty " " column
    table.getColumn(" ").setCellRenderer(new MyRendererAndEditor(table));
    table.getColumn(" ").setCellEditor(new MyRendererAndEditor(table));

    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.getContentPane().add(new JScrollPane(table));
    f.setSize(500, 180);
    f.setVisible(true);
  }
}

class MyRendererAndEditor implements TableCellRenderer, TableCellEditor 
{
  private JButton btn;
  private int row;

  MyRendererAndEditor(JTable table) {
    btn = new JButton("Remove");
    btn.addActionListener(new ActionListener() {
      @Override
      public void actionPerformed(ActionEvent e) {
        DefaultTableModel model = (DefaultTableModel) table.getModel();
        model.removeRow(row);
      }
    });
  }

  @Override
  public Component getTableCellRendererComponent(JTable table, Object 
  value, boolean isSelected, boolean hasFocus, int row, int column) 
  {
    return btn;
  }

  @Override
  public Component getTableCellEditorComponent(JTable table, Object 
  value, boolean isSelected, int row, int column) 
  {
    this.row = row;
    return btn;
  }

  @Override
  public Object getCellEditorValue() { return true; }

  @Override
  public boolean isCellEditable(EventObject anEvent) { return true; }

  @Override
  public boolean shouldSelectCell(EventObject anEvent) { return true; }

  @Override
  public boolean stopCellEditing() { return true; }

  @Override
  public void cancelCellEditing() {}

  @Override
  public void addCellEditorListener(CellEditorListener l) {}

  @Override
  public void removeCellEditorListener(CellEditorListener l) {}
}

Output:

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