How to Create JTextArea Inside JTable Cells In Java Netbeans
In this Java Tutorial we will see How To Create a JTable with a JTextArea column to display multiline text in the table cell.
What We Are Gonna Use In This Project:
- Java Programming Language.- NetBeans Editor.
Project Source Code:
package new_tutorials;
import com.formdev.flatlaf.FlatIntelliJLaf;
import java.awt.Component;
import java.util.List;
import java.util.ArrayList;
import javax.swing.AbstractCellEditor;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellEditor;
/**
*
* @author 1BestCsharp
*/
public class JtableWithJtextAreaColumn extends JFrame{
public JtableWithJtextAreaColumn()
{
setTitle("JTable With JtextArea Column");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(800, 400);
setLocationRelativeTo(null);
/*
try{
UIManager.setLookAndFeel(new FlatIntelliJLaf());
}catch(UnsupportedLookAndFeelException ex){}
*/
initializeGUI();
}
private void initializeGUI()
{
JTable table = new JTable(new CustomTableModel());
table.setRowHeight(60);
table.setShowHorizontalLines(true);
table.setShowVerticalLines(true);
table.getColumnModel().getColumn(3).setCellRenderer(new JTextAreaCellRenderer());
table.getColumnModel().getColumn(3).setCellEditor(new JTextAreaCellEditor());
JScrollPane scrollpane = new JScrollPane(table);
add(scrollpane);
setVisible(true);
}
public static void main(String[] args) {
new JtableWithJtextAreaColumn();
}
// Custom Table Model for the JTable
private class CustomTableModel extends AbstractTableModel
{
private final String[] columnNames = {"First Name","Last Name","Age","Address"};
private final List<Person> data = new ArrayList<>();
public CustomTableModel()
{
data.add(new Person("John", "Silva", 30, "123 Main St, City A, Country X, Postal Code: 12345, 456 Elm St, City B, Country Y, Postal Code: 56789 - 123 Main St, City A, Country X, Postal Code: 12345, 456 Elm St, City B, Country Y, Postal Code: 56789 - 123 Main St, City A, Country X, Postal Code: 12345, 456 Elm St, City B, Country Y, Postal Code: 56789 - 123 Main St, City A, Country X, Postal Code: 12345, 456 Elm St, City B, Country Y, Postal Code: 56789 - 123 Main St, City A, Country X, Postal Code: 12345, 456 Elm St, City B, Country Y, Postal Code: 56789 - 123 Main St, City A, Country X, Postal Code: 12345, 456 Elm St, City B, Country Y, Postal Code: 56789"));
data.add(new Person("Jane", "Doe", 25, "456 Elm St, City B, Country Y, Postal Code: 56789"));
data.add(new Person("Michael", "Johnson", 40, "789 Oak St, City C, Country Z, Postal Code: 10111"));
data.add(new Person("Emily", "Smith", 28, "321 Pine St, City D, Country X, Postal Code: 67890"));
data.add(new Person("Daniel", "Brown", 35, "567 Cedar St, City E, Country Y, Postal Code: 11223"));
data.add(new Person("Olivia", "Jones", 22, "876 Maple St, City F, Country Z, Postal Code: 44556"));
data.add(new Person("David", "Martinez", 33, "234 Birch St, City G, Country X, Postal Code: 78901"));
data.add(new Person("Sophia", "Taylor", 29, "987 Willow St, City H, Country Y, Postal Code: 23456"));
data.add(new Person("William", "Clark", 45, "543 Rose St, City I, Country Z, Postal Code: 11234"));
data.add(new Person("Emma", "Anderson", 27, "210 Sunflower St, City J, Country X, Postal Code: 56789"));
}
@Override
public int getRowCount() { return data.size();}
@Override
public int getColumnCount() { return columnNames.length;}
@Override
public String getColumnName(int columnIndex){ return columnNames[columnIndex];}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
Person person = data.get(rowIndex);
return switch(columnIndex){
case 0 -> person.getFirstName();
case 1 -> person.getLastName();
case 2 -> person.getAge();
case 3 -> person.getAddress();
default -> null;
};
}
public Class<?> getClassName(int columnIndex){
return columnIndex == 3 ? JTextArea.class:Object.class;
}
@Override
public boolean isCellEditable(int rowIndex, int columnIndex){
return columnIndex == 3;
}
@Override
public void setValueAt(Object value, int rowIndex, int columnIndex){
if(columnIndex == 2 && value instanceof String)
{
data.get(rowIndex).setAddress((String)value);
fireTableCellUpdated(rowIndex, columnIndex);
}
}
}
// Custom cell renderer for JTextArea column
private class JTextAreaCellRenderer extends DefaultTableCellRenderer
{
private final JTextArea textArea;
// Constructor to initialize JTextArea properties
public JTextAreaCellRenderer()
{
textArea = new JTextArea();
textArea.setLineWrap(true);
textArea.setWrapStyleWord(true);
textArea.setOpaque(true);
}
// Method to render JTextArea component in table cell
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
{
textArea.setText(value != null ? value.toString() : "");
return textArea;
}
}
// Custom cell editor for JTextArea column
private class JTextAreaCellEditor extends AbstractCellEditor implements TableCellEditor
{
private final JTextArea textArea;
private final JScrollPane scrollPane;
public JTextAreaCellEditor()
{
textArea = new JTextArea();
textArea.setLineWrap(true);
textArea.setWrapStyleWord(true);
scrollPane = new JScrollPane(textArea);
scrollPane.setBorder(null);
}
// Method to retrieve the edited cell value
@Override
public Object getCellEditorValue() {
return textArea.getText();
}
// Method to return the JTextArea component for editing
@Override
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
textArea.setText(value != null ? value.toString() : "");
return scrollPane;
}
}
// Model class representing a person's information
private class Person
{
private String firstName;
private String lastName;
private int age;
private String address;
public Person(String fname, String lname, int age, String adrs){
this.firstName = fname;
this.lastName = lname;
this.age = age;
this.address = adrs;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public int getAge() {
return age;
}
public String getAddress() {
return address;
}
public void setAddress(String address){ this.address = address; }
}
}
The Final Result:
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