Java Program to Display Some Text in the Frame using Labels

This is a Java program to display some text in the frame with the help of a label.

Problem Description

We have to write a program in Java such that it displays some text in a frame using JLabel.

Expected Input and Output

To display text using a label, we have the following set of input and output.

To display a text:
At the execution of the program, it is expected that a frame appears with some text written with the help of a label.
Text is “This text is written using a label”

Problem Solution

1. Create a frame and a label.
2. Add the label to the frame.
3. Write some text to the label.
4. Display the frame.

Program/Source Code

Here is source code of the Java Program to display text in a frame using a label. The program is successfully compiled and tested using javac compiler on Fedora 30. The program output is also shown below.

/*Java Program to display text using label*/

```
import javax.swing.*;
```
```
import java.awt.*;
```
```
class Text_Label
```
```
{
```
```
	//Driver function
```
```
	public static void main(String args[])
```
```
	{
```
```
		//Create a frame
```

		JFrame frame=new JFrame("Text using Label");

```
		frame.setSize(500,500);
```
```
		frame.setBackground(Color.white);
```

		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

```
		frame.setLayout(null);
```
```
		//Create a Label
```
```
		JLabel label=new JLabel();
```
```
		label.setBounds(0,100,500,50);
```
```
		frame.add(label);
```
```
		//Write text to the label
```

		String str="This text is written using a label";

```
		label.setText(str);
```
```
		//Display the frame
```
```
		frame.setVisible(true);
```
```
	}
```
```
}
```

Program Explanation

1. Create a frame with background color & specific size. frame.setBackground(Color.white); is used to create the frame background color as white. frame.setSize(500,500); is used to set the width and height of the frame.
2. frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); is a default close operation for the frame.
3. Create a label with a setBounds() values and add it to the frame by using frame.add();.
JLabel label=new JLabel(); –> Used to create the label.
label.setBounds(0,100,500,50); –> Sets the position of label.
frame.add(label); –> It will add the label to the frame.

4. String str=”This text is written using a label”; –> It is used to write text to the label. Text is “This text is written using a label”
5. label.setText(str); –> It will add the text to the label.
6. frame.setVisible(true); is used to display the frame. The frame will display with the text “This text is written using a label” which is added to the label.

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Runtime Test Cases

Here’s the run time test case for displaying text in a frame using a label.

Test case – Here’s the runtime output to display a text. Once the program is executed, it displays the frame with text “This text is written using a label”.

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