Hash table based implementation of the Map interface. This implementation provides all of the optional map operations, and permits null values and the null key. (The HashMap class is roughly equivalent …

All HashMap Methods A list of all HashMap methods can be found in the table below. Some methods use the type of the HashMap's entries as a parameter or return value. The type of the key will be …

Nov 27, 2025 · A HashMap is a part of Java’s Collection Framework and implements the Map interface. It stores elements in key-value pairs, where, Keys are unique. and Values can be duplicated. …

Jan 16, 2025 · The first example shows how to use the new method, and the second example shows how to achieve the same in earlier versions of Java. As these methods are quite straightforward, we …

In this reference page, you will find all the hashmap methods available in Java. For example, if you need to add an element to the hashmap, use the put () method.

Explore the complete list of Java HashMap methods with usage syntax and simple explanations. Useful for Java developers working with key-value pairs.

Dec 5, 2024 · The HashMap, part of the Java Collections framework, is used to store key-value pairs for quick and efficient storage and retrieval operations. In the key-value pair (also referred to as an …

Nov 12, 2025 · Understanding the various methods available in the HashMap class is crucial for any Java developer as it can significantly simplify data management tasks in many applications. This …

For a complete reference of HashMap methods, go to our Java HashMap Reference. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, …

Jul 23, 2025 · HashMap is a data structure that uses a hash function to map identifying values, known as keys, to their associated values. It contains "key-value" pairs and allows retrieving value by key.