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Questions and Answers
The setEnabled() method is used to:
The setEnabled() method is used to:
- Make a component visible
- Disable event handling for a component
- Enable event handling for a component (correct)
- Set the layout manager for a container
The setSize() method is commonly used to:
The setSize() method is commonly used to:
- Set the background color of a component
- Set the layout manager for a container
- Set the title of a frame
- Set the size of a component (correct)
What does the TextField tf = new TextField(10); line do?
What does the TextField tf = new TextField(10); line do?
- Makes the TextField visible
- Sets the width of the TextField to 10
- Sets the character capacity of the TextField to 10 (correct)
- Sets the initial text of the TextField to 10
What is the default layout manager for a Frame in AWT?
What is the default layout manager for a Frame in AWT?
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What is the purpose of the FlowLayout layout manager?
What is the purpose of the FlowLayout layout manager?
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Which AWT component is used to create a checkbox that can be selected or deselected?
Which AWT component is used to create a checkbox that can be selected or deselected?
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Which AWT component is used to create a group of mutually exclusive radio buttons?
Which AWT component is used to create a group of mutually exclusive radio buttons?
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The setVisible(true) method is used to:
The setVisible(true) method is used to:
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Study Notes
AWT Components
setEnabled(): Enables event handling for a specific component.setLayout(): Specifies the layout manager for a container to arrange components.setSize(): Defines the dimensions of a component.setText(): Assigns a text value to a Label component.setVisible(true): Makes a component visible in the graphical user interface.TextField tf = new TextField(10): Initializes a TextField with a capacity for 10 characters.- FlowLayout: Arranges components in a single row and divides the container into specific areas.
- Components like buttons and checkboxes can be included and positioned accordingly.
Layout Managers
setEnabled(): Disables event handling for a component.setLayout(): Changes the background color of a component or sets its layout.setSize(): Establishes the size of a GUI component.setText(): Sets the layout configuration of a GUI component.setVisible(true): Ensures a component is shown on the screen.- BorderLayout: Divides the container into five distinct areas and allows for a structured arrangement.
- GridLayout: Creates a grid layout with fixed rows and columns to organize components neatly.
Other Components
setEnabled(): Can be used to make a component visible or invisible based on the context.setLayout(): Sets the layout manager used for arranging components within a container.setSize(): Determines the dimensions of various GUI elements.setText(): Can be employed to set visible text on buttons and other components.setVisible(true): Used to enable event handling for the component while making it visible.- GridLayout: Consistently arranges components into a grid structure, supporting a neat display.
- Options can be configured for radio buttons and checkboxes for user interactions.
Detailed Component Functions
setEnabled(): Adjusts the activity state of components, either enabling or disabling them.- GridBagLayout: Allows for more precise control over how components are positioned and sized within the container.
- ToggleButton: Functions similarly to other buttons but retains its pressed state until toggled again.
- CheckboxGroup: Manages groups of checkboxes that can provide mutual exclusivity among options.
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