Advanced Java Programming Chapter 1 - AWT
39 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary purpose of the Component class?

  • Laying out other components on the screen
  • Remembering colors and font settings (correct)
  • Creating top-level window interfaces
  • Serving as a passive display element

    • Which class is responsible for positioning other components within it?

  • Component
  • Window
  • Panel (correct)
  • Frame

    • Which class directly represents a window on the desktop?

  • Dialog
  • Panel
  • Frame (correct)
  • Container

    • What is the function of the Label component in AWT?

    <p>To simply display strings</p> Signup and view all the answers

    Which statement accurately describes the relationship between Panel and Applet?

    <p>Panel is the immediate superclass of Applet</p> Signup and view all the answers

    Which constructor would you use to create a TextArea with a predefined string and specific size?

    <p>TextArea(String str, int numLines, int numChars)</p> Signup and view all the answers

    What does the method setEditable() do in the context of a TextArea?

    <p>Allows the user to modify the content of the TextArea</p> Signup and view all the answers

    What is the purpose of using the Scrollbar class in a GUI application?

    <p>To navigate through content that exceeds visible space</p> Signup and view all the answers

    Which of the following is NOT a type of scrollbar style available in the Scrollbar class?

    <p>SCROLLBARS_AUTO</p> Signup and view all the answers

    How is a vertical scrollbar instantiated with specific parameters?

    <p>Scrollbar(Scrollbar.VERTICAL, 0, 100, 0, height)</p> Signup and view all the answers

    What feature distinguishes a CheckboxGroup from regular checkboxes?

    <p>CheckboxGroup enables mutually exclusive selections.</p> Signup and view all the answers

    What is the purpose of the getSelectedCheckbox() method in a CheckboxGroup?

    <p>To obtain the currently selected checkbox.</p> Signup and view all the answers

    Which method is used to add an item to a Choice object?

    <p>add(String name)</p> Signup and view all the answers

    When constructing a List with multiple selection enabled, what would be the correct constructor?

    <p>List(int numRows, true)</p> Signup and view all the answers

    What does the getSelectedItem() method do in a Choice object?

    <p>Provides the label of the selected item.</p> Signup and view all the answers

    What method would you use to set the alignment of a Label in a Java AWT application?

    <p>setAlignment(int how)</p> Signup and view all the answers

    What is the purpose of the getLabel() method in a Button class?

    <p>To return the current label of the button.</p> Signup and view all the answers

    Which of the following methods initializes a button in a Java AWT applet?

    <p>Button(String str)</p> Signup and view all the answers

    When using a Checkbox, which method would you call to check its current state?

    <p>getState()</p> Signup and view all the answers

    What does the setText(String str) method do in a Label class?

    <p>It changes the text of the label to the specified string.</p> Signup and view all the answers

    Which label is created to display text aligned to the left in a Java AWT application?

    <p>Label.LEFT</p> Signup and view all the answers

    In the Buttonapplet example, how is the button labeled 'No' created?

    <p>Button b2 = new Button('No');</p> Signup and view all the answers

    What does the Checkbox constructor Checkbox(String str, Boolean on) do?

    <p>It creates a checkbox with a specified label and checked state.</p> Signup and view all the answers

    What does the AWT class hierarchy's topmost class represent?

    <p>Component</p> Signup and view all the answers

    Which method is used to set the visibility of a frame in AWT?

    <p>setVisible(boolean visibleFlag)</p> Signup and view all the answers

    Which AWT component can be used to create a graphical user interface programmatically?

    <p>Button</p> Signup and view all the answers

    What is a primary characteristic of AWT components?

    <p>They are platform-dependent and vary by operating system.</p> Signup and view all the answers

    Which method is responsible for setting the size of a frame in AWT?

    <p>setSize(int newWidth, int newHeight)</p> Signup and view all the answers

    Which statement about AWT is true?

    <p>AWT components use more resources than Swing components.</p> Signup and view all the answers

    How would you implement a simple applet that changes background color to yellow?

    <p>setBackground(Color.YELLOW);</p> Signup and view all the answers

    Which statement distinguishes a Java application window from an applet?

    <p>Java applications run in a standalone environment.</p> Signup and view all the answers

    Which method is used to add an item at a specific index in a List?

    <p>void add(String name, int index)</p> Signup and view all the answers

    What does the method getSelectedItem() return?

    <p>The name of the selected item as a String</p> Signup and view all the answers

    Which method retrieves the total number of items in a List?

    <p>Int getItemCount()</p> Signup and view all the answers

    What is the correct way to set a character to echo in a TextField?

    <p>t2.setEchoChar('*')</p> Signup and view all the answers

    What type of selection does the boolean parameter in the List class constructor enable?

    <p>Multiple selection</p> Signup and view all the answers

    Which method is used to retrieve a specific item from a List by its index?

    <p>String getItem(int index)</p> Signup and view all the answers

    What method is used to check if a TextField is editable?

    <p>boolean isEditable()</p> Signup and view all the answers

    Which statement is correct regarding the TextField and TextComponent classes?

    <p>TextField is a subclass of TextComponent.</p> Signup and view all the answers

    Study Notes

    Advanced Java Programming (22517)

    • Course syllabus outlines chapter topics and corresponding marks:
      • Chapter 1: Introduction to Abstract Windowing Toolkit (AWT) (12 marks)
      • Chapter 2: Swing (10 marks)
      • Chapter 3: Event Handling (12 marks)
      • Chapter 4: Networking (10 marks)
      • Chapter 5: Interacting with Database (12 marks)
      • Chapter 6: Servlet (14 marks)
      • Total marks: 70

    Unit 1: Introduction to Abstract Windowing Toolkit (AWT) (12 Marks)

    • Unit Outcomes:
      • Develop graphical user interfaces (GUIs) using AWT.
      • Create frame windows using different AWT components.
      • Arrange GUI components using layout managers.
      • Develop programs using menus and dialog boxes.

    AWT (Abstract Window Toolkit)

    • A platform-dependent application programming interface (API) for creating graphical user interfaces (GUIs) in Java.
    • AWT classes and methods enable window creation and management.
    • Components are platform-dependent (displayed according to the operating system).
    • Components are heavyweight; they consume system resources.
    • Components:
      • TextField
      • Button
      • Label
      • Checkbox
      • Choice
      • List
      • CheckboxGroup

    AWT Class Hierarchy

    • Hierarchical structure of AWT components.
    • Object is the root of the hierarchy.
    • Component is the top-level container class.
    • Container manages child components' layout.
    • Panel, Window, Frame, Dialog, and Applet are container types.
    • Button, Label, TextField, Checkbox, Choice, List, CheckboxGroup are components.

    Frame

    • A top-level window with a title bar, menu bar, borders, and resizing corners.
    • A subclass of Window.

    AWT Controls

    • Components enabling interaction with the application.
      • Labels
      • Buttons
      • Checkboxes
      • Checkbox groups
      • Scrollbars
      • Text fields
      • Text areas

    AWT Control: Label

    • Displays text on a window.
    • Passive component (does not directly receive user input).
    • Different justification options (left, right, center).

    Methods Related To Text

    • setText(String str): Sets the label's text.
    • getText(): Retrieves the label's text.
    • setAlignment(int how): Sets alignment of the text (left, right, center).
    • getAlignment(): Retrieves the label alignment.

    Creating Frame Windows

    • Use a Frame class or subclass.
    • Set size, title, and background color.
    • setSize(int width, int height): Sets the size of the window.
    • setTitle(String title): Sets the title of the window.
    • setBackground(Color color): Sets the background color.

    Creating Applet Using Frame Window

    • Create a class that extends the Frame class.
    • Use the SimpleFrame example code.
    • The class SimpleFrame extends Frame.
    • The constructor sets window characteristics and makes it visible.
    • setVisible(true) makes the frame visual.

    Java Application vs Applet

    • Java Application:
      • Has a main method.
      • Does not require an internet connection.
      • Is a standalone application.
    • Applet:
      • Does not have a main method.
      • Requires an internet connection to execute.
      • Is part of a web page.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Advanced Java Programming (22517) Notes PDF

    Description

    Test your understanding of the Abstract Windowing Toolkit (AWT) as you learn to create graphical user interfaces (GUIs) in Java. This quiz covers key concepts such as frame windows, layout managers, and menu creation. Perfect for assessing your skills in Java's GUI development.

    More Like This

    Java AWT and Event Driven Programming Quiz
    10 questions

    Java AWT and Event Driven Programming Quiz

    TruthfulCommonsense771 avatar
    TruthfulCommonsense771
    Java GUI Components: AWT and Swing
    30 questions

    AWT Components Class in Java: GUI Component Management

    FlourishingPyramidsOfGiza avatar
    FlourishingPyramidsOfGiza
    Java AWT vs Swing Comparison
    24 questions

    Java AWT vs Swing Comparison

    TroubleFreeInspiration2837 avatar
    TroubleFreeInspiration2837
    Java AWT Basics Quiz
    48 questions

    Java AWT Basics Quiz

    EasedWombat2908 avatar
    EasedWombat2908
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser