Problem 16 What class do you use to create ... [FREE SOLUTION]

Chapter 13: Problem 16

What class do you use to create a check box menu item? What do you pass to the class constructor? How do you cause it to be initially selected?

Short Answer

Expert verified

Answer: The `JCheckBoxMenuItem` class is used to create a checkbox menu item. To set the initial state as selected, use the `setSelected` method with `true` as the parameter. For example: ```java JCheckBoxMenuItem checkBoxMenuItem = new JCheckBoxMenuItem("Sample Item"); checkBoxMenuItem.setSelected(true); ```

Step by step solution

Identify the class

The class used to create a checkbox menu item is `JCheckBoxMenuItem` in Java's Swing library.

Pass the necessary argument(s) to the constructor

To create a new `JCheckBoxMenuItem`, pass a string argument to the constructor which represents the text displayed on the menu item. For example: ```java JCheckBoxMenuItem checkBoxMenuItem = new JCheckBoxMenuItem("Sample Item"); ```

Set initial state as selected

To set the initial state of the checkbox menu item as selected, use the `setSelected` method and pass `true` as a parameter: ```java checkBoxMenuItem.setSelected(true); ``` Now the checkbox menu item will be initially selected when the application is executed.

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91影视

What class do you use to create a check box menu item? What do you pass to the class constructor? How do you cause it to be initially selected?

Short Answer

Step by step solution

Identify the class

Pass the necessary argument(s) to the constructor

Set initial state as selected

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