What are library classes in Java give an example?

Library classes simplify the job of programmers by providing built-in methods for common and non-trivial tasks like taking input from user, displaying output to user, etc . For example, System class in java. lang package of Java Library classes provides the print() and println() methods for displaying output to user.

One of the key features of Java is that it has a feature-rich and vast Core library . While the Standard Java library is powerful, you will need other Java libraries in professional Software Development.

Keyword searches . Search relevant keywords in catalogs, indexes, search engines, and full-text resources. Useful both to narrow a search to the specific subject heading and to find sources not captured under a relevant subject heading.