Swing JRadioButton Tutorial with Example

In this JRadioButton Tutorial, you will learn:

1. What is JRadioButton Control in Java Swing?
2. How to create JRadioButton control?
3. Simple JRadioButton Example
4. JRadioButton Selection with ActionListener
5. Track JRadioButton Status on Button Click
6. Save and Retrieve JRadioButton Status in Database

In this Swing JRadioButton Tutorial, you will learn everything about JRadioButton Control with complete and easy programming example.

1. What is `JRadioButton` Control in Java Swing?

JRadioButton is an option chooser control where you have multiple options but you can choose only one option. It can be selected or deselected and when you select one option, the other option in the same panel will be automatically deselected.

2. How to Create JRadioButton?

You can create JRadioButton like this example

JRadioButton radioButton = new JRadioButton("Option 1");

1	JRadioButton radioButton = new JRadioButton("Option 1");

You must import javax.swing.JRadioButton; in your program.

3. Simple JRadioButton Example

This is the simple JRadioButton Example, in which you learn how to define JRadioButton and place into a form. I have created only 3 Radio buttons and combined them all in one button group.

Programming Example

package Test.MainJava.com;

import java.awt.FlowLayout;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JRadioButton;

public class JRadioButton_Example
{
	JRadioButton option1, option2, option3;
	JFrame frame;
	
	public static void main(String[] args)
	{
		JRadioButton_Example j=new JRadioButton_Example();
		j.Draw();
	}
	
	public void Draw()
	{
			option1 = new JRadioButton("Option1");
			option2 = new JRadioButton("Option2");
			option3 = new JRadioButton("Option3");
			
			ButtonGroup group1 = new ButtonGroup();
			group1.add(option1);
			group1.add(option2);
			group1.add(option3);
			
			frame = new JFrame("Simple JTextField Example");
			frame.setSize(400, 200);
			frame.setLayout(new FlowLayout());
			
			frame.add(option1);
			frame.add(option2);
			frame.add(option3);
			
			frame.setVisible(true);
			
	}
}

package Test.MainJava.com;

import java.awt.FlowLayout;

import javax.swing.ButtonGroup;

import javax.swing.JFrame;

import javax.swing.JRadioButton;

public class JRadioButton_Example

{

JRadioButton option1, option2, option3;

JFrame frame;

public static void main(String[] args)

{

JRadioButton_Example j=new JRadioButton_Example();

j.Draw();

}

public void Draw()

{

option1 = new JRadioButton("Option1");

option2 = new JRadioButton("Option2");

option3 = new JRadioButton("Option3");

ButtonGroup group1 = new ButtonGroup();

group1.add(option1);

group1.add(option2);

group1.add(option3);

frame = new JFrame("Simple JTextField Example");

frame.setSize(400, 200);

frame.setLayout(new FlowLayout());

frame.add(option1);

frame.add(option2);

frame.add(option3);

frame.setVisible(true);

}

4. JRadioButton Selection with ActionListener

This example will teach you, how to write code under JRadioButton click event. Sometimes, you may want to write some logic when JRadioButton selected. You don’t want to wait for final button click and check the option right after their selection. In this example, when you click Option2, you will notice that lblmessage is changed into “You Selected Option 2”.

package Test.MainJava.com;

import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JRadioButton;

public class JRadioButton_Example
{
	JRadioButton option1, option2, option3;
	JFrame frame;
	JLabel lblmessage;
	
	public static void main(String[] args)
	{
		JRadioButton_Example j=new JRadioButton_Example();
		j.Draw();
	}
	
	public void Draw()
	{
			option1 = new JRadioButton("Option1");
			option1.setSelected(true);
			option2 = new JRadioButton("Option2");
			option3 = new JRadioButton("Option3");
			lblmessage = new JLabel(" Your Option is : ");
			
			ButtonGroup group1 = new ButtonGroup();
			group1.add(option1);
			group1.add(option2);
			group1.add(option3);

			
			frame = new JFrame("Simple JTextField Example");
			frame.setSize(400, 200);
			frame.setLayout(new GridLayout(4,1));
			
			frame.add(option1);
			frame.add(option2);
			frame.add(option3);
			frame.add(lblmessage);			
			frame.setVisible(true);
			
			//Adding ActionListener to Option2 Radio Button
			
			option2.addActionListener(new ActionListener()
			{
				
				@Override
				public void actionPerformed(ActionEvent e)
				{
					JRadioButton rbutton = (JRadioButton) e.getSource();
					if(rbutton.isSelected())
						lblmessage.setText("You Selected: Option 2");
					
				}
			});
			
	}
}

package Test.MainJava.com;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.ButtonGroup;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JRadioButton;

public class JRadioButton_Example

{

JRadioButton option1, option2, option3;

JFrame frame;

JLabel lblmessage;

public static void main(String[] args)

{

JRadioButton_Example j=new JRadioButton_Example();

j.Draw();

}

public void Draw()

{

option1 = new JRadioButton("Option1");

option1.setSelected(true);

option2 = new JRadioButton("Option2");

option3 = new JRadioButton("Option3");

lblmessage = new JLabel(" Your Option is : ");

ButtonGroup group1 = new ButtonGroup();

group1.add(option1);

group1.add(option2);

group1.add(option3);

frame = new JFrame("Simple JTextField Example");

frame.setSize(400, 200);

frame.setLayout(new GridLayout(4,1));

frame.add(option1);

frame.add(option2);

frame.add(option3);

frame.add(lblmessage);

frame.setVisible(true);

//Adding ActionListener to Option2 Radio Button

option2.addActionListener(new ActionListener()

{

@Override

public void actionPerformed(ActionEvent e)

{

JRadioButton rbutton = (JRadioButton) e.getSource();

if(rbutton.isSelected())

lblmessage.setText("You Selected: Option 2");

}

});

}

5. Track JRadioButton Status on Button Click

This programming example explains how to track radio button status on button click. This is very important to track radio button status on button click because when writing programming logic you need to determine which button is selected and according to that you save value into database.

Programming Example

package Test.MainJava.com;

import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JRadioButton;

public class JRadioButton_Example
{
	JRadioButton option1, option2, option3;
	JFrame frame;
	JLabel lblmessage;
	JButton btnGet;
	
	public static void main(String[] args)
	{
		JRadioButton_Example j=new JRadioButton_Example();
		j.Draw();
	}
	
	public void Draw()
	{
			option1 = new JRadioButton("Option1");
			option1.setSelected(true);
			option2 = new JRadioButton("Option2");
			option3 = new JRadioButton("Option3");
			lblmessage = new JLabel(" Your Option is : ");
			
			btnGet = new JButton("Click to Get Radio Button Status");
			btnGet.addActionListener(actions);
			
			ButtonGroup group1 = new ButtonGroup();
			group1.add(option1);
			group1.add(option2);
			group1.add(option3);

			
			frame = new JFrame("Simple JTextField Example");
			frame.setSize(400, 200);
			frame.setLayout(new GridLayout(5,1));
			
			frame.add(option1);
			frame.add(option2);
			frame.add(option3);
			frame.add(btnGet);
			frame.add(lblmessage);
			frame.setVisible(true);
	}
	
	//Adding ActionListener to Button
	private ActionListener actions = new ActionListener()
	{
		
		@Override
		public void actionPerformed(ActionEvent e)
		{
			if(e.getSource()== btnGet)
			{
				if(option1.isSelected())
					lblmessage.setText("You Selected Option 1");
				else if(option2.isSelected())
					lblmessage.setText("You Selected Option 2");
				else
					lblmessage.setText("You Selected Option 3");
			}
			
		}
	};
}

package Test.MainJava.com;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.ButtonGroup;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JRadioButton;

public class JRadioButton_Example

{

JRadioButton option1, option2, option3;

JFrame frame;

JLabel lblmessage;

JButton btnGet;

public static void main(String[] args)

{

JRadioButton_Example j=new JRadioButton_Example();

j.Draw();

}

public void Draw()

{

option1 = new JRadioButton("Option1");

option1.setSelected(true);

option2 = new JRadioButton("Option2");

option3 = new JRadioButton("Option3");

lblmessage = new JLabel(" Your Option is : ");

btnGet = new JButton("Click to Get Radio Button Status");

btnGet.addActionListener(actions);

ButtonGroup group1 = new ButtonGroup();

group1.add(option1);

group1.add(option2);

group1.add(option3);

frame = new JFrame("Simple JTextField Example");

frame.setSize(400, 200);

frame.setLayout(new GridLayout(5,1));

frame.add(option1);

frame.add(option2);

frame.add(option3);

frame.add(btnGet);

frame.add(lblmessage);

frame.setVisible(true);

}

//Adding ActionListener to Button

private ActionListener actions = new ActionListener()

{

@Override

public void actionPerformed(ActionEvent e)

{

if(e.getSource()== btnGet)

{

if(option1.isSelected())

lblmessage.setText("You Selected Option 1");

else if(option2.isSelected())

lblmessage.setText("You Selected Option 2");

else

lblmessage.setText("You Selected Option 3");

}

};

}

6. Save and Retrieve JRadioButton Status in Database

In this example, you will learn how to save and retrieve JRadioButton into database.

I have created simple table and add a row.

package Test.MainJava.com;

import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JRadioButton;

public class JRadioButton_Example
{
	JRadioButton option1, option2, option3;
	JFrame frame;
	JLabel lblmessage;
	JButton btnGet, btnSave;
	
	//Connection Credential
		static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";  
	    static final String dburl = "jdbc:mysql://localhost/swing_db";    
	    static final String dbuser = "root";
	    static final String dbpass = "root";
		Connection con=null;
		Statement stmt=null;
	
	public static void main(String[] args)
	{
		JRadioButton_Example j=new JRadioButton_Example();
		j.Draw();
	}
	
	public void Draw()
	{
			option1 = new JRadioButton("Option1");
			option1.setSelected(true);
			option2 = new JRadioButton("Option2");
			option3 = new JRadioButton("Option3");
			lblmessage = new JLabel(" Your Option is : ");
			
			btnGet = new JButton("Get Data");
			btnGet.addActionListener(actions);
			
			btnSave = new JButton("Save Radio Button");
			btnSave.addActionListener(actions);
			
			ButtonGroup group1 = new ButtonGroup();
			group1.add(option1);
			group1.add(option2);
			group1.add(option3);

			
			frame = new JFrame("Simple JTextField Example");
			frame.setSize(400, 200);
			frame.setLayout(new GridLayout(6,1));
			
			frame.add(option1);
			frame.add(option2);
			frame.add(option3);
			frame.add(btnSave);
			frame.add(btnGet);
			frame.add(lblmessage);
			frame.setVisible(true);
	}
	
	//Adding ActionListener to Button
	private ActionListener actions = new ActionListener()
	{
		
		@Override
		public void actionPerformed(ActionEvent e)
		{
			if(e.getSource()== btnSave)
			{
				String value="";
				if(option1.isSelected())
					value = "option1";
				else if(option2.isSelected())
					value = "option2";
				else
					value = "option3";
				
				SaveData(value);
			}
			
			else if(e.getSource() == btnGet)
			{
				String str = GetData();
				
				if(str=="option1")
				{
					option1.setSelected(true);
				}
				else if(str=="option2")
				{
					option2.setSelected(true);
				}
				else
				{
					option3.setSelected(true);
				}
			}
			
		}
	};
	
	public void SaveData(String str)
	{
		try
		{			
			con = DriverManager.getConnection(dburl, dbuser, dbpass);     
		     //Step 2 : Initialize Statement
		    stmt=con.createStatement();
		    String query="UPDATE JRadioButton_Table SET Value = '" + str + "' WHERE ID=1";
		    stmt.executeUpdate(query);
			
			lblmessage.setText("Saved Successfully.");
		}
		catch (SQLException ex) 
		 {
		     System.err.println("Cannot connect ! ");
		     ex.printStackTrace();
		 }
		 
		 finally {
		     System.out.println("Closing the connection.");
		     if (con != null) try { con.close(); } catch (SQLException ignore) {}
		 }
	}
	
	public String GetData()
	{
		Connection con = null;
		Statement stmt = null;
		
		String Value = "";
		
		try
		{			
			con = DriverManager.getConnection(dburl, dbuser, dbpass);     
		     //Step 2 : Initialize Statement
		    stmt=con.createStatement();
		    String query="SELECT * FROM JRadioButton_Table WHERE ID=1";
		    ResultSet rset = stmt.executeQuery(query);
		    
		    while(rset.next())
		    {
		    	Value = rset.getString(2);
		    }		    
		}
		catch (SQLException ex) 
		 {
		     System.err.println("Cannot connect ! ");
		     ex.printStackTrace();
		 }
		 
		 finally {
		     System.out.println("Closing the connection.");
		     if (con != null) try { con.close(); } catch (SQLException ignore) {}
		 }
		
		return Value;
	}
}

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package Test.MainJava.com;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import javax.swing.ButtonGroup;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JRadioButton;

public class JRadioButton_Example

{

JRadioButton option1, option2, option3;

JFrame frame;

JLabel lblmessage;

JButton btnGet, btnSave;

//Connection Credential

static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";

static final String dburl = "jdbc:mysql://localhost/swing_db";

static final String dbuser = "root";

static final String dbpass = "root";

Connection con=null;

Statement stmt=null;

public static void main(String[] args)

{

JRadioButton_Example j=new JRadioButton_Example();

j.Draw();

}

public void Draw()

{

option1 = new JRadioButton("Option1");

option1.setSelected(true);

option2 = new JRadioButton("Option2");

option3 = new JRadioButton("Option3");

lblmessage = new JLabel(" Your Option is : ");

btnGet = new JButton("Get Data");

btnGet.addActionListener(actions);

btnSave = new JButton("Save Radio Button");

btnSave.addActionListener(actions);

ButtonGroup group1 = new ButtonGroup();

group1.add(option1);

group1.add(option2);

group1.add(option3);

frame = new JFrame("Simple JTextField Example");

frame.setSize(400, 200);

frame.setLayout(new GridLayout(6,1));

frame.add(option1);

frame.add(option2);

frame.add(option3);

frame.add(btnSave);

frame.add(btnGet);

frame.add(lblmessage);

frame.setVisible(true);

}

//Adding ActionListener to Button

private ActionListener actions = new ActionListener()

{

@Override

public void actionPerformed(ActionEvent e)

{

if(e.getSource()== btnSave)

{

String value="";

if(option1.isSelected())

value = "option1";

else if(option2.isSelected())

value = "option2";

else

value = "option3";

SaveData(value);

}

else if(e.getSource() == btnGet)

{

String str = GetData();

if(str=="option1")

{

option1.setSelected(true);

}

else if(str=="option2")

{

option2.setSelected(true);

}

else

{

option3.setSelected(true);

}

};

public void SaveData(String str)

{

try

{

con = DriverManager.getConnection(dburl, dbuser, dbpass);

//Step 2 : Initialize Statement

stmt=con.createStatement();

String query="UPDATE JRadioButton_Table SET Value = '" + str + "' WHERE ID=1";

stmt.executeUpdate(query);

lblmessage.setText("Saved Successfully.");

}

catch (SQLException ex)

{

System.err.println("Cannot connect ! ");

ex.printStackTrace();

}

finally {

System.out.println("Closing the connection.");

if (con != null) try { con.close(); } catch (SQLException ignore) {}

}

public String GetData()

{

Connection con = null;

Statement stmt = null;

String Value = "";

try

{

con = DriverManager.getConnection(dburl, dbuser, dbpass);

//Step 2 : Initialize Statement

stmt=con.createStatement();

String query="SELECT * FROM JRadioButton_Table WHERE ID=1";

ResultSet rset = stmt.executeQuery(query);

while(rset.next())

{

Value = rset.getString(2);

}

catch (SQLException ex)

{

System.err.println("Cannot connect ! ");

ex.printStackTrace();

}

finally {

System.out.println("Closing the connection.");

if (con != null) try { con.close(); } catch (SQLException ignore) {}

}

return Value;

}

Summary

In this chapter, you learned Swing JRadioButton with example. You learned how to create and use JRadioButton in Java Swing. In the next tutorial, you will learn JComboBox in Java Swing.

Previous Lesson

MainJava.Com

Swing JRadioButton Tutorial with Example

1. What is `JRadioButton` Control in Java Swing?

2. How to Create JRadioButton?

3. Simple JRadioButton Example

4. JRadioButton Selection with ActionListener

5. Track JRadioButton Status on Button Click

6. Save and Retrieve JRadioButton Status in Database

Summary

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Learn with Fun

1. What is JRadioButton Control in Java Swing?

2. How to Create JRadioButton?

3. Simple JRadioButton Example

4. JRadioButton Selection with ActionListener

5. Track JRadioButton Status on Button Click

6. Save and Retrieve JRadioButton Status in Database

Summary

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Leave a Reply Cancel reply

Learn with Fun

1. What is `JRadioButton` Control in Java Swing?