Java entrySet() Method: Purpose and Usage

In Java, the entrySet() method is used to obtain a Set view of all key-value pairs contained in a Map collection. This method returns a Set object where each element is a Map.Entry object representing a key-value pair in the Map. With entrySet() method, it is convenient to iterate through all key-value pairs in a Map collection and perform corresponding operations. Therefore, entrySet() method is one of the commonly used methods in Map collections.