Welcome to the Treehouse Community
The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.
Pranshu GuptaCourses Plus Student 5,483 Points
REPL, or read-eval-print-loop, is a shell interface that reads each line of input, evaluates that line, and then prints the result, hence you get instant feedback. And when you use a REPL, you are writing code interactively and executing it without delay.
Java REPL is an interactive Java shell. REPL stands for Read-Eval-Print-Loop, which means it will read each line of input, evaluate that line, then print out the result
REPL is useful to get instant feedback/evaluation for an expression you are trying to implement in your own Java programs. It lets you experiment and see exactly how Java will evaluate your inputs without having to worry about incorporating it into your code only to find out what you are trying to do doesn't work.
I hope that helps!