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 does Java ensure you cannot put an incorrect type into a type-specific array?

Using runtime type identification
Through compile-time and runtime checks
By erasing the type in runtime
Java does not provide such a mechanism

The correct answer is: Through compile-time and runtime checks

Java ensures that you cannot put an incorrect type into a type-specific array through both compile-time and runtime checks. This means that Java will flag any code that attempts to assign a value of the wrong type to an array element during both the compilation and execution phases. This helps to prevent errors and maintain type safety within the program. The other options are incorrect because A) Runtime type identification refers to the ability for a program to determine the type of an object at runtime, not to prevent incorrect type assignments. C) Erasing the type in runtime is a feature of certain languages, but it is not a mechanism used by Java to prevent incorrect type assignments. D) Java does provide a mechanism to ensure type safety in arrays.