Java, SQL, Data Structures & Algorithms, and Big Data Brushup

This is a one-stop repository to look up code snippets related to core Java concepts, SQL queries, data structures, algorithms, and Big Data frameworks. Ideal for quick reference and brushing up on important concepts.

Content

Algorithms

Searching and Sorting algorithms.
Frequently asked programs.

Apache Crunch

A framework to execute MapReduce jobs with sample programs.

Data Structures

Arrays, LinkedLists, Stacks, Queues, Trees with code examples.

Design Patterns

Implementation of popular design patterns:
- Singleton
- Factory
- Builder

Exceptions

Code snippets for creating custom exceptions in Java.

Garbage Collection

Practical usage of Java Garbage Collection mechanisms.

Java Collections

Examples showcasing the use of the Java Collection Framework.

Java Refresher

Useful Java concepts for quick revision.

JDK Features

Code snippets demonstrating new features introduced in various JDK versions.

Kafka

Kafka Producer and Consumer programs with real-world examples.

Kafka & Spark

Programs that process streaming data from Kafka using Spark.

MapReduce

Simple programs demonstrating MapReduce concepts and implementations.

Marker Interface

Examples of Marker Interfaces in Java.

Multithreading

Snippets demonstrating multithreading in Java.

Recursion

A collection of recursive programs.

Spark

Spark programs such as the WordCount problem.

String Concepts

Common string-related operations and concepts in Java.

Resources

Images

Contains useful images for various purposes.

Interview Questions & Answers

A collection of interview questions & Answers from Java, Big Data, SQL, and more.

Contribution

Feel free to contribute by sending a Pull Request to this repository.