Chapter 2.9, Problem 41SC

Program Plan Intro

Displaying the frame:

To display a frame, the following steps need to be taken,

Step1: First create the object of “JFrame” class.

Step2:  Next, set the size of the frame.

Step 3: Make the frame to be visible on console screen.

Consider the following code to display a frame.

//Create the object for JFrame class

JFrame fra1= new JFrame();

//Set the size of the frame

fra1.setSize(200,400);

//Set the frame visible

fra1.setVisible(true);

Explanation:

• In the above code, “fra1” is the object created for “JFrame” class.
• The following frame “fra1” sets the “200” pixels of width and “400” pixels of height. By default, if the frame size is not set then it will be automatically set to “(0,0)” pixels which means “0” pixels of width and “0” pixels of height.
• Next, call the “setVisible()” method to display the frame and set the Boolean value as “true”.