Toggle Button Program in Java

This is a Java Program to Show the Functioning of a Toggle Button

Problem Description

We have to write a program in Java such that it shows the functioning of a toggle button.
Toggle Button : It is a two-state button that allows the user to switch the button either on or off, that is the status of the button can be switched between selected and deselected respectively.

Expected Input and Output

For showing the function of Toggle Button, we can have the following different sets of input and output.

1. To Display the Toggle Button:

When the program is being executed,
it is expected that a toggle button is created and displayed.

2. To Display the Selected Status of Toggle Button:

When the toggle button is selected,
the expected output is "Status of Toggle Button : SELECTED"

3. To Display the Deselected Status of Toggle Button:

When the toggle button is deselected,
the expected output is "Status of Toggle Button : DESELECTED"

Problem Solution

1. Create a frame and a label.
2. Create a Toggle Button and add ItemListener to it.
3. When any action is performed on the toggle button, display the appropriate message.

Subscribe Now: Java Programs Newsletter | Important Subjects Newsletters

Program/Source Code

Here is source code of the Java Program to show the functioning of Toggle Button. The program is successfully compiled and tested using javac compiler on Fedora 30. The program output is also shown below.

/* Java Program to show the functioning to Toggle Button*/

```
import javax.swing.*;
```
```
import java.awt.*;
```
```
import java.awt.event.*;
```
```
import javax.swing.JToggleButton;
```
```
class Toggle implements ItemListener
```
```
{
```
```
    static JLabel text;
```
```
    //Driver function
```

    public static void main(String args[])

```
    {
```
```
	//Create a frame
```

	JFrame frame = new JFrame("Toggle Button");

```
	frame.setSize(500,500);
```

	frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

	frame.getContentPane().setBackground(Color.white);

```
	frame.setLayout(null);
```
```
	//Create an object
```
```
	Toggle obj = new Toggle();
```
```
	//Create a Toggle Button
```

	JToggleButton button = new JToggleButton("Toggle Button");

```
	button.setBounds(150,100,200,100);
```
```
	button.addItemListener(obj);
```
```
	frame.add(button);
```
```
	//Create a label
```
```
	text = new JLabel();
```
```
	text.setBounds(150,250,300,100);
```

	text.setText("Click on the Toggle Button");

```
	frame.add(text);
```
```
	//Display the frame
```
```
	frame.setVisible(true);
```
```
    }
```

    //Function to display the status of toggle button

    public void itemStateChanged(ItemEvent e)

```
    {
```

	if(e.getStateChange()==ItemEvent.SELECTED)

	    text.setText("Status of Toggle Button : SELECTED");

```
	else
```

	    text.setText("Status of Toggle Button : DESELECTED");

```
    }
```
```
}
```

Program Explanation

1. To create a toggle button use JToggleButton class.
2. Add ItemListener to the toggle button.
3. Use method getStateChange to get the state change of toggle button.

Runtime Test Cases

Here’s the run time test case to show the functioning of toggle button.

Test case 1 – To View the Toggle Button.