Chapter 12, Problem 1MC

Program Description Answer

To create a frame with the use of “Swing”, the programmer should use the “JFrame” class for the application.

Hence, the answer is option “C”.

Explanation of Solution

“JFrame” class:

The basic window of the swing application is known as frame. To create a frame, the programmer should create an object for the “JFrame” class in a Swing application.  The package of “import javax.swing.JFrame*” should import in the program before use the “JFrame” class.

Syntax:

JFrame object_name=new JFrame();

Here,

• “JFrame” is the class name.
• “object_name” is the object name of the frame.

The programmer can use the object name of the “JFrame” to insert components in the window.

Explanation for incorrect options:

“Frame” class:

The “Frame” class is a class from “AWT” package. The programmer can create a window using the “Frame” class by importing the “import java.awt.*” package not in Swing package.

Hence, the option “A” is not correct.

SwingFrame:

The term “SwingFrame” is not a predefined class in java. This class is not available in both Swing and AWT packages.

Hence, the option “B” is not correct.

JavaFrame:

The term “JavaFrame” refers a frame in an application. But the class name “JavaFrame” is not a predefined class in java. This class is not available in both Swing and AWT packages.

Hence, the option “D” is not correct.