Question

What is the signature of a Map method that adds a key-value pair to the Map?

a) void add(K key, V value)
b) void put(K key, V value)
c) V add(K key, V value)
d) K put(K key, V value)

Answer 1

The signature of a Map method that adds a key-value pair to the Map is b) void put(K key, V value)

Step-by-step explanation:

The signature of a Map method that adds a key-value pair to the Map is represented by option b) void put(K key, V value). The "put" method is commonly used in Map implementations to associate the specified value with the specified key in the map.

In the context of Java and other programming languages, the "put" method takes two parameters: the key and the corresponding value. The use of "void" indicates that this method does not return a value, emphasizing that its primary purpose is to add or update the key-value pair within the Map.

This signature aligns with the standard syntax for adding entries to a Map, where the key serves as a unique identifier, and the associated value represents the data or information associated with that key. The "put" method is a fundamental operation for manipulating Map data structures, allowing developers to insert, update, or overwrite key-value pairs based on the specified key.

In summary, option b) void put(K key, V value) accurately represents the signature of a Map method that adds a key-value pair to the Map.