Chapter 13, Problem 7AW

Explanation of Solution

Displaying an image of file in a label:

• In Java GUI application, images can be displayed in label or buttons.
• To display an image in a label, user must implement the below requirement.
  • First create an object of “ImageIcon” class which is used to read the content of given image file.
  • Then pass the object of “ImageIcon” as an argument to “JLabel” class.
• User can add the image to the existing label using “setIcon” method.
  • This method takes the parameter of “ImageIcon” object.

Example:

The example for displaying an image in a label is shown below:

//Create an object of "ImageIcon"

ImageIcon sampleImage = new ImageIcon("sample.jpg");

//Create label and pass the object of "ImageIcon" to it

JLabel exampleLabel = new JLabel(sampleImage);

//Add an image to existing label

exampleLabel.setIcon(sampleImage);

From the above code,

• First line implies create the “ImageIcon” object with parameter of image file “sample.jpg”.
• Second line create the label using “JLabel” class and then pass the object of image icon as an argument to label class constructor...