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

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Prepare for your Java exam with our ultimate quiz based on 'Thinking in Java'. Engage with expertly crafted questions that enhance your learning process. Perfect for Java enthusiasts looking to solidify their knowledge!

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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In which scenario would you use ByteArrayInputStream?

When reading from a database
When working with files
When reading from a memory area
When downloading data from the internet

The correct answer is: When reading from a memory area

When working with files (B), you would typically use FileInputStream instead, as it is optimized for reading bytes from a file. Similarily, when reading from a database (A), you would use a JDBC query to retrieve data, not ByteArrayInputStream. When downloading data from the internet (D), you would likely use an InputStream from URL or a similar mechanism designed for remote retrieval, not ByteArrayInputStream. Therefore, the only scenario where you would truly use ByteArrayInputStream is when you need to read from a memory area (C) such as a byte array. This can be useful when dealing with packets of data in network programming or when working with large arrays of binary data in memory.