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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What type of error will you get if you add an Orange to an ArrayList of Apples and then try to cast it to an Apple?

Compile-time error
Logical error
Runtime exception
Syntax error

The correct answer is: Runtime exception

Trying to cast an Orange to an Apple will result in a Runtime exception. This is because Java enforces type safety and does not allow incompatible types to be casted. Since Orange and Apple are not subclasses of each other, it will throw a ClassCastException at runtime. A Compile-time error is not applicable here because there is no syntax error, and the code will compile without any issues. A logical error is also not applicable because the code will not produce an incorrect output, but rather fail to execute at runtime. A Syntax error is also not applicable because there is no error in the syntax of the code.