How do you associate a dropdown menu (JComboBox) with a selection event in Java?

By using the addItemSelectedListener() method.

By using the addSelectionListener() method.

By using the addComboBoxListener() method.

How can you make a component non-editable in a Java graphical interface?

By using the setEditable(false) method.

By using the setModifiable(false) method.

By using the setEnabled(false) method.

By using the setMutable(false) method.

How can you adjust the positioning of components in a JPanel using GridBagLayout?

By specifying absolute coordinates.

How can we adjust the positioning of components in a JPanel using GridBagLayout?

By specifying absolute coordinates.

By using the setGridPosition() method.

By using the adjustComponentPosition() method.

What is the main role of JDBC in Java?

Establish a connection with a database.

Handle exceptions in Java code.

How do we establish a connection to a database using JDBC?

By using DriverManager.getConnection().

By using DataSource.getConnection().

How do we retrieve the results of a SELECT query with JDBC?

By using ResultSet and the executeQuery() method.

By using PreparedStatement and the executeQuery() method.

By using Statement and the executeUpdate() method.

By using Connection and the executeQuery() method.

What is the main difference between Statement and PreparedStatement in JDBC?

Statement is precompiled while PreparedStatement allows the use of parameters.

Statement is used for SELECT queries while PreparedStatement is used for insert queries.

Statement requires an active connection to the database while PreparedStatement does not.

There is no major difference between the two.

How do we execute a stored procedure using JDBC?

By using CallableStatement and the execute() method.

By using Statement and the executeQuery() method.

By using PreparedStatement and the execute() method.

By using Connection and the executeProcedure() method.

What is the function of the commit() method in JDBC?

Validate changes made to the database.

Close the connection to the database.

What is the purpose of using transactions in JDBC?

Ensure data consistency in the database.

Control concurrent access to the database.

Validate the structure of the database.

Optimize the performance of SQL queries.

What is the main goal of the MVC architecture in Java?

Separate the layers of an application into three distinct components.

Merge business logic and user interface into a single component.

Make the application platform-independent.

Improve application performance.

What is the role of the Model in the MVC architecture?

Represent business logic and data.

Display information to the user.

What is the role of the View in the MVC architecture?

Represent the structure of data.

What is the role of the Controller in the MVC architecture?

Manipulate data and user interactions.

Represent the structure of data.

What is the main advantage of using the MVC architecture?

Clear separation of concerns and ease of testability.

Rapid creation of complex user interfaces.

Reduction of memory consumption.

How is the model typically linked to the view in the MVC architecture?

The view observes changes in the model and updates accordingly.

The view communicates directly with the model.

The controller passes model data to the view.

The model directly manipulates the user interface.

Java GUI Components Quiz

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Computers

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2nd Grade

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Medium

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109 questions

Which graphical component is used to display text in a Java graphical interface?

Which component is used to select a single option among several in a graphical interface?

How do you associate an event with a button (JButton) in Java?

Which layout manager is used to align graphical components horizontally in a container in Java?

Which graphical component is used to display a scrollbar in a Java graphical interface?

How can you add a graphical component to a container using BorderLayout?

Which graphical component is used to create an editable text area in a Java graphical interface?

Which class is used to handle mouse events in Java?

How do you associate a dropdown menu (JComboBox) with a selection event in Java?

Which component is used to group several option buttons in a graphical interface?

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