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!

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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.