Natural Language Processing (NLP) is a sub-field in Artificial Intelligence focusing on analysing human language to build Machine Learning models. NLP uses programming languages, statistics, computational linguistics mainly. Python is a user-friendly programming language compatible with NLP tasks; it displays semantics and syntax, making building NLP programs easier. Java is used for NLP due to its quick learning and straightforward interface. It has many open-source libraries and is an independent platform, making the building less complicated. While NLP can use Python to manage sentiment analysis and document classification, Java provides full-text search and image extraction services.