Big Data refers to datasets that are too large, complex, or fast-growing for traditional data processing tools to handle. It involves massive amounts of structured, semi-structured, and unstructured data that require advanced technologies and frameworks to analyze, manage, and process efficiently.In the context of Java, it plays a significant role in Big Data applications because many Big Data technologies and frameworks are written in Java or support it as a primary language. Java has a rich ecosystem of libraries, frameworks, and tools that make it ideal for handling Big Data applications.Java’s object-oriented features make it modular and scalable, which is crucial for Big Data systems.