Using the merge method of the Map interface, which statement correctly updates the wordCount map of type Map to count all of the occurrences of a word in a file? A)wordCount.merge(word, 1, (k,v) - v + 1); B)word.merge(wordCount,(k,v) - v + 1); C)word.merge(wordCount, 1, (k,v) - v + 1); D)wordCount.merge(word,(k,v) - v + 1);

Question

Using the merge method of the Map interface, which statement correctly updates the wordCount map of type Map<String,Integer> to count all of the occurrences of a word in a file?
A)wordCount.merge(word, 1, (k,v) -> v + 1);
B)word.merge(wordCount,(k,v) -> v + 1);
C)word.merge(wordCount, 1, (k,v) -> v + 1);
D)wordCount.merge(word,(k,v) -> v + 1);

Quizplus · Accepted Answer

The correct syntax for using the `merge` method to update a map for counting occurrences is `map.merge(key, 1, (k, v) -> v + 1);`. This means if the key (`word`) exists, it updates its count by adding 1, otherwise, it initializes the count to 1.

Using the Merge Method of the Map Interface, Which Statement