Understanding System.out.println() in Java System.out.println() is a fundamental method in Java used for printing messages to the console. It is widely used for debugging, logging, and general output purposes. What is System.out.println() in Java? System.out.println() is a method provided by the Java standard library to print a line of text to the standard output stream, typically the console or terminal. Key Points about System.out.println() Usage: Used to print messages to the console. Functionality: Outputs text followed by a newline character. Output Stream: Writes to the standard output stream (often the console). Understanding "out" in System.out.println() The "out" in System.out.println() is a static member variable of the System class. It is initialized to refer to the standard output stream. Example Usage of System.out.println() Here's an example demonstrating the u