Mastering Java: The Ultimate Quiz for 'Thinking in Java'

Disable ads (and more) with a membership for a one time $2.99 payment

Dive into the depths of Java with our quiz based on "Thinking in Java, Fourth Edition" by Bruce Eckel. Test your knowledge, solidify concepts, and prepare for certification with challenging questions and insightful feedback.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which class is not directly derived from the Component class?

JButton
JLabel
JFrame
JTextField

The correct answer is: JFrame

The Component class is the root of all different types of user interface components in Java Swing, such as JButton, JLabel, and JTextField. These components inherit from the Component class and add additional functionalities specific to their type. However, JFrame is not directly derived from the Component class. Instead, it inherits from the Container class, which itself inherits from the Component class. This allows the JFrame class to have the ability to contain and organize other components. Therefore, option C is the correct answer as it is not directly derived from the Component class.