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

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Mastering Java: The Ultimate Quiz for 'Thinking in Java'. Dive deep into Java with multiple-choice questions. Challenge yourself with quiz questions designed to test and improve your understanding of the 'Thinking in Java' book. Get ready for your exam!

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What method is used to calculate the number of characters in the String?

count()
calculateLength()
size()
length()

The correct answer is: length()

Explanation The method used to calculate the number of characters in a String is called length(). Option A, count(), is used to count the number of occurrences of a specific character in a String, not the total number of characters. Option B, calculateLength(), is not a predefined method in Java for String objects. Option C, size(), is used to get the number of elements in a collection, not the number of characters in a String. Therefore, option D, length(), is the correct and most appropriate method to use for finding the number of characters in a String.