Combo box Program plan: ThreeComboBox.java Create a class named “ThreeComboBox”. Inside the class, Define the required components. Set the width and height of the frame. Define the constructor “ThreeComboBox ()”. Set the size of the frame. Create an object for panel. Set the layout. Call the method “createControlPanel()”. Definition of method “createControlPanel ()”. Create the combo box for Red, Green and blue constraints. Definition of class “ColorListener”. Definition of method “actionPerfromed”. Create an object for color. Set the color. Check the color chosen equals to red. Set the color to red. Check the color chosen equals to green. Set the color to green. Check the color chosen equals to blue. Set the color to blue. Set the background color. Create an object for “ColorListener”. Create an object for panel. Add the combo box to the frame. Add the border layout. ThreeColorsViewer.java Create a class named “ColorsViewer”. Inside the class, Definition of “main()” method Create an object for frame. Close the frame. Set the title for frame. Set the visibility.

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Chapter 11, Problem 5PE

Program Plan Intro

Combo box

Program plan:

ThreeComboBox.java

Create a class named “ThreeComboBox”. Inside the class,

Define the required components.

Set the width and height of the frame.

Define the constructor “ThreeComboBox ()”.

Set the size of the frame.

Create an object for panel.

Set the layout.

Call the method “createControlPanel()”.

Definition of method “createControlPanel ()”.

Create the combo box for Red, Green and blue constraints.

Definition of class “ColorListener”.

Definition of method “actionPerfromed”.

Create an object for color.

Set the color.

Check the color chosen equals to red.

Set the color to red.

Check the color chosen equals to green.

Set the color to green.

Check the color chosen equals to blue.

Set the color to blue.

Set the background color.

Create an object for “ColorListener”.

Create an object for panel.

Add the combo box to the frame.

Add the border layout.

ThreeColorsViewer.java

Create a class named “ColorsViewer”. Inside the class,

Definition of “main()” method

Create an object for frame.

Close the frame.

Set the title for frame.

Set the visibility.

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