Map in Java (opens in new tab)

What is Map in Java? A Map in Java is a part of the Collections Framework that stores data in the form of key-value pairs. Each key is unique. Values can be duplicated. A key is used to retrieve its corresponding value. Map is available in the java.util package. It does not extend the Collection interface. Real-Time Example Think of a student's record: Roll Number (Key) Student Name (Value) 101 Harini 102 Rahul 103 Kaviya Here: Roll Number = Key Student Name = Value A key uniquely identifies ...