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

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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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