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

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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!

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How can a generic class ensure type safety across different method calls?

By using raw types
By using bounded wildcards
By restricting to a specific type such as String
Type safety cannot be ensured in this scenario

The correct answer is: By using bounded wildcards

A generic class can ensure type safety across different method calls by using bounded wildcards. This allows the class to specify a range of possible types that can be used as the generic type parameter, ensuring that only compatible types can be used. Using raw types and restricting to a specific type such as String do not provide the same level of flexibility and can potentially introduce type safety issues. Option D, stating that type safety cannot be ensured in this scenario, is incorrect as bounded wildcards specifically address this issue.