Modular programming is a method of software development that emphasises the creation of self-contained modules. Each module can be built, tested, and integrated into the larger system individually. Modular programming can help control the development process and reduce the chance of errors. Java, Python, and Ruby are examples of programming languages that are well-known for their modular architecture. Because of its robust encapsulation and package management capabilities, Java is frequently regarded as a particularly modular language. Python is also lauded for having a well-defined module architecture that allows for a lot of code reuse.