6 Data Structures Every Java Developer Should Learn in 2023

6 Data Structures Every Java Developer Should Learn in 2023

When will you be asked to name a programming language used to create complex enterprise applications? Java! Right. It is a large and diverse language with a lot to offer. However, you can’t learn Java. You can, however, hire Java developers for your projects. Although there are numerous skills to develop along with the data structures. So, here are some data structures you should be familiar with.

Data structures essential for Java developers

Here are some data structures in Java, every developer should learn.

Array

Arrays are a fundamental data structure in any language used to create apps. While using the language, Java includes array support. It also projects a syntax to represent it, similar to int[]. In the same way that it is an array of primitives. You can also make an array of primitives and reference types. When you work with an invalid index in an array that is bound, you will get an ArrayIndexOutOfBoundsException. An array is homogeneous and contains data of the same type. If you store an int in a String, it should throw an ArrayStoreException at runtime. You can hire Java developers for more technical guidance.

Linked List

Moving on from an array to another data structure. Another structure to learn is the linked list. In Java, doubly linked list implementations are available as java. util.LinkedList. This class can also be used whenever a linked list data structure is required. Because LinkedList is a Collection framework component, it implements the Collection and Iterable interfaces. It also allows for iteration over them. You can hire Java developers for more technical guidance.

Hash table

A hash table is also known as a map or dictionary, another versatile data structure. Java API offers map data structure implementation for various needs. Such as HashMap, Hashtable, and ConcurrentHashMap. It works the same as the Dictionary in Python. So this map in Java offers O(1) functionality for returning a value if you know the key, which is a very common use case in most Java applications.

Stack

Moving on to the next data structure, Stack, implemented as java. util.Stack. And for storing elements, this class extends the legacy Vector class. The Stack adheres to the LIFO (Last In, First Out) principle. It also provides a push() method for inserting objects and a pop() method for inserting elements.

The Stack is used in various web application development in Java, such as expression evaluation. Stack data structures should not be confused with stack memory, which is used in Java to store local variables and method frames.

Queue

Another important data structure in the Java collection framework is the queue. It is a concrete implementation of the interfaces ArrayBlockingQueue, LinkedList, and PriorityQueue. However, Queue can also be implemented using a linked list or an array. However, it is preferable to use pre-existing, tried-and-true classes. It reduces development time and improves code quality. It implements producer-consumer patterns in Java BlockingQueue is a thread-safe extension of the Queue interface.

Set

Finally, a set is a special type of data structure that eliminates duplicates. It’s unique to use in web application development in Java these elements as your organization’s IDs. So, if your data is unique, then use a set to remove duplicates. API includes a few Sets of implementations. Such as HashSet, TreeSet, and LinkedHashSet, which are more than adequate in most cases. Apart from the initial set, these collections also provide sorting and insertion orders.

Conclusion: Java is a vast language and to excel in it from every angle demands some skills. The above-mentioned are some data structures that every Java developer should know. For more consideration, consult a Java development company for more projects.