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.

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What method is used to convert a String to a byte array?

  1. toString

  2. toByteArray

  3. getBytes

  4. asString

The correct answer is: getBytes

A String is an array of characters, and in order to convert it into a byte array, we need to use a method that returns an array of bytes, rather than a String. toString(), asString(), and toByteArray() all return Strings, which makes them incorrect. The correct method is getBytes(), which actually converts the String into an array of bytes.

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