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F-ANSI - Java Colored Output

0.3 Release 0.3 API docs Open Issues GPL License

A fluent Java API to control console output via ANSI control codes


Console output doesn't have to be boring black and white, but creating visually appealing command line programs isn't straightforward. The standard mechanism, ANSI escape codes, are confusing and tedious to work with. F-ANSI provides an intuitive, fluent abstraction to create elegant applications without the hassle.


In Beta: F-ANSI is still in active development, and the API may change. See Guava's Beta API policy for more.

F-ANSI's fluent interface allows you to compose readable chains of output; the following example prints "Foo" in red, followed by a hyphen in the terminal's default styling, followed by "Bar" in green.

ansi().color(RED).out("Foo").out(" - ").color(LIGHT_GREEN).outln("Bar");

Colored 'Foo - Bar'

There are several demo scripts in the demo directory you can use for reference and testing. To print a color table of the default ANSI colors, you can call demo.ColorTable:

ANSI Color Table


F-ANSI depends on Guava. The tests further depend on TestNG and Truth.

For convenience the f-ansi-no-dependencies.jar bundles in Guava, at the cost of a much larger Jar. If you already have Guava on your classpath, the f-ansi.jar is much smaller.


Copyright 2016-2017 Michael Diamond

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see


Terminal control API for Java; colored output and more





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