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.

Nov 12, 2025 · This blog post has provided a detailed overview of HashMap methods in Java, from basic usage to advanced best practices. With this knowledge, you should be well - equipped to use …

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 …

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

The table below contains various methods of the Java HashMap class, each with a link to a detailed explanation, examples, and real-world uses.

Now you can use methods like put() to add key/value pairs, get() to retrieve a value by key, and remove() to delete an entry - all by using keys instead of index numbers.