How to Create a Non-Editable JTable in Java Swing

Question

How can I make a JTable non-editable in Java Swing?

DefaultTableModel model = new DefaultTableModel();
JTable table = new JTable(model);

// Disable editing the table cells by overriding isCellEditable
model.setValueAt("Row1, Cell1", 0, 0);
model.setValueAt("Row1, Cell2", 0, 1);

// Usage of model.isCellEditable()
if (!table.isCellEditable(row, column)) {
   // Implement logic when cell is not editable
}

Answer

To make a JTable non-editable in Java Swing, the approach involves overriding the default editing behavior. This can be accomplished using a custom table model or implementing a simple method.

import javax.swing.*;
import javax.swing.table.DefaultTableModel;

public class NonEditableTable {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Non-Editable JTable Example");
        DefaultTableModel model = new DefaultTableModel(new Object[][]{{"Editable Cell 1", "Editable Cell 2"}}, new String[]{"Column 1", "Column 2"}) {
            @Override
            public boolean isCellEditable(int row, int column) {
                return false;  // All cells non-editable
            }
        };

        JTable table = new JTable(model);
        frame.add(new JScrollPane(table));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }
}

Solutions

  • Use a `DefaultTableModel` and override the `isCellEditable()` method to return `false` for all cells.
  • Alternatively, set the table's default cell editor to `null`.

Common Mistakes

Mistake: Forgetting to implement isCellEditable method, leading to editable cells.

Solution: Override the isCellEditable method in your table model class to return false.

Mistake: Using default JTable without a custom model, which allows editing by default.

Solution: Always associate JTable with a custom table model that restricts editing.

Helpers

  • JTable non-editable
  • Java Swing JTable
  • prevent editing JTable
  • Java JTable example
  • JTable disable editing

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