How to Increase Row Height in JTable

In this tutorial, we are going to see how to increase row height in JTable. When working with JTable in Swing, we sometimes need the table to have rows of different heights, other than the default values provided by JTable component. This allows us to enlarge the cells of JTable.

Let’s look at an example of a Swing program, how to change the default value of the height of a row in a JTable:

 

How to Increase Row Height in JTable

This can be done easily by using these two methods of JTable class:

• setRowHeight(int row, int height): defines the height (in pixels) of a single line.
• setRowHeight(int height): defines the height (in pixels) of all the lines of the JTable defined before.

For example, the following code sets the height of all lines to 30 pixels:

table.setRowHeight(30);

Output:

 
We can define the height of a single line, for example, the third line (index = 2) will have a height of 50 pixels:

table.setRowHeight(2, 50);

Output:

 

Complete Example:

import javax.swing.*;
import java.awt.*;
 
public class Main {
 
    public static void main(String[] args) {
        //create a frame
        final JFrame frame = new JFrame("JTable Example");
 
        //Headers for JTable 
        String[] columns = new String[] {
            "Id", "Name", "Address", "Hourly rate", "Part-time"
        };
 
        //data for JTable in a 2D table
        Object[][] data = new Object[][] {
            {1, "Thomas", "Alaska", 20.0, true },
            {2, "Jean", "Arizona", 50.0, false },
            {3, "Yohan", "California", 30.0, true },
            {4, "Emily", "Colorado", 60.0, false },
            {5, "Alex", "Florida", 10.0, false },
        };
 
        //create a JTable with data
        JTable table = new JTable(data, columns);
        table.setRowHeight(30);
        table.setRowHeight(2, 50);
    
        JScrollPane scroll = new JScrollPane(table);
        table.setFillsViewportHeight(true);
 
        JLabel labelHead = new JLabel("List of employees");
        labelHead.setFont(new Font("Arial",Font.TRUETYPE_FONT,20));
 
        frame.getContentPane().add(labelHead,BorderLayout.PAGE_START);
        //add table to frame
        frame.getContentPane().add(scroll,BorderLayout.CENTER);
 
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(500, 180);
        frame.setVisible(true);
    }
}

Output:

MCQPractice competitive and technical Multiple Choice Questions and Answers (MCQs) with simple and logical explanations to prepare for tests and interviews.Read More