https://github.com/aneeshdurg/jrepl

Jrepl - A read-eval-print-loop for Java
https://github.com/aneeshdurg/jrepl

Last synced: about 2 months ago
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Jrepl - A read-eval-print-loop for Java

• Host: GitHub
• URL: https://github.com/aneeshdurg/jrepl
• Owner: aneeshdurg
• Created: 2015-10-18T13:24:15.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2016-01-29T18:26:46.000Z (almost 9 years ago)
• Last Synced: 2023-03-07T17:37:36.896Z (almost 2 years ago)
• Language: Java
• Size: 178 KB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# JRepl

![Jrepl](http://i.imgur.com/u7l4q2G.png "Jrepl")

Jrepl - A read-eval-print-loop for Java 

Why?

	A read–eval–print loop (REPL), also known as an interactive toplevel or language shell, is a 

	simple, interactive computer programming environment that takes single user inputs 

	(i.e. single expressions), evaluates them, and returns the result to the user; 

	a program written in a REPL environment is executed piecewise. 

														  -Wikipedia

	REPLs are great for testing out some logic quickly and consicly. 

	Why waste time compiling something you don't need?

	In java if you need to test a simple for loop or a mere piece of code, 

	it's quite a hassel to create a new file, ensuring a valid class name, a main function, etc. 

	

What and How?

	This project is intended to create a read-eval-print-loop for java with some additional features.

	Jrepl intends to create a REPL environment which takes care of some of the less exciting 

	aspects of writing a quick test program in Java by creating and compiling temporary files for you.

	

Some instructions and notes.

	

	JRepl requires java 1.7 or above. You can check your java version by running:

			java -version

	from the command line.

	-------------------------------------------------------------------------------------------------------

	To view a list of commands and their usage, as well as a brief over view of Jrepl specific syntax, 

	start Jrepl and use the command 

			-help		

	-------------------------------------------------------------------------------------------------------	

	JRepl can be launched on windows with Jrepl.bat or by running java Jrepl from the command line.

	If you edit Jrepl.java, you can compile and run by using:

			javac Jrepl.java

			java Jrepl

		or

			jrepl -update

		or 

			jrepl -updateo

			(if you only want to compile and not run)

			

	Note that these commands must be run from the same directory that contains Jrepl. Editing Jrepl.bat

	to use absolute paths and adding it to your PATH variable will allow you to launch Jrepl from anywhere.

	-------------------------------------------------------------------------------------------------------

	If you make an error while typing in a command, don't worry about it! JRepl will automatically rollback 

	to before you entered that command.

	Furthermore, all print statements will be deleted after they are run once, but operations, assignments

	and other functions will persist within a session so that you can still use your variable across 

	commands. To get rid of those statements, running the command:

	

		-reset

	

	will reset Jrepl.	

	-------------------------------------------------------------------------------------------------------

	Some features that I want to implement in the future:

		*A faster compiling system

		*View command history

		*Better system for handling variables

Author: Aneesh Durg

	

>v1.0 made at BoilerMake2015