Question 1

In Java, each container has its own ____________________, which determines how the components are laid out.
A)container
B)layout manager
C)Swing component
D)frame manager

Accepted Answer

The layout manager is responsible for determining the position and size of components within a container. Each container can have its own layout manager, allowing for flexible and customizable user interfaces in Java.

Question 2

If a JPanel with a BorderLayout manager contains a single component that was added to the CENTER, which parts of the JPanel does the component fill?
i.North
II.South
III.Center
IV.West
v.East
A)I, II and III
B)II, IV and V
C)III, IV and V
D)I, II, III, IV and V

Accepted Answer

When a single component is added to the CENTER of a BorderLayout, it fills the entire container, covering all regions: North, South, Center, West, and East.

Question 3

To create a _____ layout, you supply the number of rows and columns in the constructor, then add the components, row by row, left to right.
A)border
B)grid
C)grid bag
D)boxed

Accepted Answer

The option (B) grid layout is the only layout mentioned in the given options that takes the number of rows and columns in the constructor and adds the components row by row, left to right. The other options mentioned (A) border layout, (C) grid bag layout, and (D) boxed layout have different ways of adding components to the layout.

Question 4

A complex GUI can be created with a set of nested panels.What should determine the components that go into a single panel?
A)the type of components
B)the size of the components
C)the adjacency of the components
D)the names of the components

Accepted Answer

The adjacency of the components should be the determining factor when deciding which components to place in a single panel. This ensures that components that are logically grouped together are placed in the same panel, resulting in a more organized and intuitive GUI design. Factors such as component type, size, and names are secondary to the adjacency of the components.

Question 5

What is the default layout manager of JPanel?
A)FlowLayout
B)GridLayout
C)BoxLayout
D)GridBagLayout

Accepted Answer

FlowLayout is the default layout manager of JPanel and it is simple to use. It arranges components in a row, wrapping to the next row if necessary, and centers them horizontally and vertically within the container. It is suitable for simple GUIs with aligned components.

Question 6

Which layout manager uses a grid, but allows selected grid locations to span multiple rows or columns?
i.GridBagLayout
II.BorderLayout
III.GridLayout
A)Only I
B)Only II
C)Only III
D)I and III

Accepted Answer

The answer of Which layout manager uses a grid, but...

Question 7

Which layout manager places objects left-to-right, row by row into a fixed set of rows and columns?
A)FlowLayout
B)BorderLayout
C)BoxLayout
D)GridLayout

Accepted Answer

GridLayout is the layout manager that places objects left-to-right, row by row into a fixed set of rows and columns. It is the best choice when we need a fixed number of rows and columns with equal widths and heights.

Question 8

Which layout manager constructor call would be best-suited to create a telephone keypad GUI which has three rows of three keys that are labeled 1,2,3; 4,5,6; and 7,8,9; respectively, as well as a fourth row of three keys labeled *, 0, #?
A)new GridLayout(3, 4)
B)new GridLayout(4, 3)
C)new FlowLayout(4, 3)
D)new BorderLayout(3, 4)

Accepted Answer

A GridLayout is the best choice for creating a telephone keypad GUI, as it allows you to easily divide the screen into a grid of rows and columns, with each cell containing a button or other component. In this case, we want a grid with 4 rows and 3 columns, so we would use the constructor new GridLayout(4, 3). Option A would create a grid with 3 rows and 4 columns, which is not what we want. Option C is a FlowLayout which will not be able to create a grid or align the buttons in a specific pattern. Option D is a BorderLayout which is not suitable for creating a grid of buttons, as it only allows one component to be placed in each of its five regions (North, South, East, West, and Center).

Question 9

What is the default layout manager of the content pane of a JFrame?
A)FlowLayout
B)GridLayout
C)BoxLayout
D)BorderLayout

Accepted Answer

The default layout manager of the content pane of a JFrame is BorderLayout. It is a powerful and flexible layout manager that allows components to be arranged in five distinct areas: North, South, East, West, and Center. This makes it an ideal choice for most GUI applications where you want to have a main content area surrounded by other components like toolbars, status bars, menus, etc.

Question 10

What is the easiest way to create complex-looking GUI layouts?
i.use the GridBagLayout manager
II.nest panels, each with its own layout manager
III.use multiple layout managers in the same container
A)Only I
B)Only II
C)Only III
D)I and III

Accepted Answer

Nesting panels, each with its own layout manager, is a common and effective strategy for creating complex GUI layouts in Java. It allows for greater flexibility and easier management of components within the GUI.

Question 11

Suppose a JPanel with a BorderLayout manager contains two components: component1, which was added to the CENTER, and component2, which was added to the SOUTH.Which parts of the JPanel will appear?
i.North
II.South
III.Center
IV.West
v.East
A)I and II
B)I, II, and III
C)III, IV, and V
D)II and III

Accepted Answer

In a BorderLayout, components added to the CENTER and SOUTH areas will occupy those respective positions. The NORTH, WEST, and EAST areas will remain empty if no components are added to them.

Question 12

How do you add two buttons to the south area of a frame using the BorderLayout?
A)Add them to a panel, then add the panel to the SOUTH
B)Add one to the SOUTH, then add the second one to the SOUTH
C)Add one to the SOUTH, then add the second one to the CENTER
D)Add one to the CENTER, then add the second one to the SOUTH

Accepted Answer

The BorderLayout only allows one component to be added to each area. Therefore, to add multiple components to an area, they must first be added to a panel and then the panel can be added to the desired area. In this case, the two buttons should be added to a panel and then the panel should be added to the SOUTH area.

Question 13

Which layout manager uses a grid so that each component will always be placed into an area of the same size?
i.GridBagLayout
II.BorderLayout
III.GridLayout
A)Only I
B)Only II
C)Only III
D)I and III

Accepted Answer

The answer of Which layout manager uses a grid so...

Question 14

When adding a component to a container with the ____ layout, specify the NORTH, EAST, SOUTH, WEST, or CENTER position.
A)border
B)grid
C)grid bag
D)flow

Accepted Answer

The border layout requires the specification of the position where the component will be added (NORTH, EAST, SOUTH, WEST, or CENTER), as it organizes the components based on the cardinal points of the container. The other layouts (grid, grid bag, and flow) do not rely on positions, but on other organizational strategies.

Question 15

What is the best first step in picking the layout managers for a set of nested panels?
A)use a single panel with a GridBagLayout manager
B)construct a set of JPanel objects
C)make a sketch of the layout
D)use multiple panels with FlowLayout managers

Accepted Answer

The best first step in picking the layout managers for a set of nested panels is to make a sketch of the layout. This will allow you to visualize how the panels will be arranged and nested, and will help you choose the appropriate layout managers for each panel. Once you have a clear idea of the desired layout, you can then start constructing the JPanel objects and selecting the appropriate layout managers for each panel.

Question 16

Which layout manger would be best suited to create a simple navigation GUI with directional arrows for left, right, up, down and enter?
A)GridLayout
B)BorderLayout
C)FlowLayout
D)GridBagLayout

Accepted Answer

BorderLayout is ideal for this scenario because it allows components to be arranged in five regions: north, south, east, west, and center. This layout perfectly matches the requirement for directional arrows (left, right, up, down) and an enter button, which can be placed in the center.

Question 17

Which layout manager places objects left-to-right, and creates a new row only if when the current row cannot accommodate another object?
A)FlowLayout
B)BorderLayout
C)BoxLayout
D)GridLayout

Accepted Answer

FlowLayout is the only layout manager among the given options that places objects left-to-right and creates a new row only when the current row cannot accommodate another object. This makes it suitable for arranging components in a resizing container.

Question 18

Which layout manager allows you to add components to it by invoking the container's add method with the component as the only argument to add.
i.FlowLayout
II.BorderLayout
III.GridLayout
A)Only I
B)Only II
C)Only III
D)I and III

Accepted Answer

FlowLayout and GridLayout allow adding components using the container's add method with the component as the only argument. BorderLayout requires a specific region to be specified when adding a component.

Question 19

The JFrame has a content pane with a default BorderLayout manager.Which method allows changing it to a FlowLayout manager?
A)setLayout
B)setFlowLayout
C)assignLayout
D)changeLayout

Accepted Answer

The setLayout method allows changing the layout manager of the content pane.

Question 20

Which class has constants called NORTH and SOUTH?
A)FlowLayout
B)BorderLayout
C)BoxLayout
D)GridLayout

Accepted Answer

The constants NORTH, SOUTH, EAST, WEST and CENTER are defined in the BorderLayout class in Java.

Quiz 20: Graphical User Interfaces

In Java, each container has its own ____________________, which determines how the components are laid out.

If a JPanel with a BorderLayout manager contains a single component that was added to the CENTER, which parts of the JPanel does the component fill? i.North II.South III.Center IV.West v.East

To create a _____ layout, you supply the number of rows and columns in the constructor, then add the components, row by row, left to right.

A complex GUI can be created with a set of nested panels.What should determine the components that go into a single panel?

What is the default layout manager of JPanel?

Which layout manager uses a grid, but allows selected grid locations to span multiple rows or columns? i.GridBagLayout II.BorderLayout III.GridLayout

Which layout manager places objects left-to-right, row by row into a fixed set of rows and columns?

Which layout manager constructor call would be best-suited to create a telephone keypad GUI which has three rows of three keys that are labeled 1,2,3; 4,5,6; and 7,8,9; respectively, as well as a fourth row of three keys labeled *, 0, #?

What is the default layout manager of the content pane of a JFrame?

What is the easiest way to create complex-looking GUI layouts? i.use the GridBagLayout manager II.nest panels, each with its own layout manager III.use multiple layout managers in the same container

Suppose a JPanel with a BorderLayout manager contains two components: component1, which was added to the CENTER, and component2, which was added to the SOUTH.Which parts of the JPanel will appear? i.North II.South III.Center IV.West v.East

How do you add two buttons to the south area of a frame using the BorderLayout?

Which layout manager uses a grid so that each component will always be placed into an area of the same size? i.GridBagLayout II.BorderLayout III.GridLayout

When adding a component to a container with the ____ layout, specify the NORTH, EAST, SOUTH, WEST, or CENTER position.

What is the best first step in picking the layout managers for a set of nested panels?

Which layout manger would be best suited to create a simple navigation GUI with directional arrows for left, right, up, down and enter?

Which layout manager places objects left-to-right, and creates a new row only if when the current row cannot accommodate another object?

Which layout manager allows you to add components to it by invoking the container's add method with the component as the only argument to add. i.FlowLayout II.BorderLayout III.GridLayout

The JFrame has a content pane with a default BorderLayout manager.Which method allows changing it to a FlowLayout manager?

Which class has constants called NORTH and SOUTH?