Are you Funky?

There is no such thing as functional programming in Java, but sometimes we emulate it using anonymous classes.

FunkyJFunctional (aka FJF) provides a new way to do functional programming in Java, using some Java syntactic sugar: method local class declarations and init blocks.

FJF integrates with many different frameworks. If not already available, feel free to implement a new funky module for the framework you love!

A few examples with different frameworks:

• Classic Java, with a funky Runnable

public void sayHelloInExecutor(ExecutorService executor) {
	class Hello {{ System.out.println("Hello Funky World"); }}
	executor.execute(withRun(Hello.class));
}

• Guava, with a funky Predicate (Guava is the former google collections)

public Iterable<User> filterMinors(Iterable<User> users) {
	class Minor extends Pred<User> {{ out = in.getAge() < 18; }}
	return filter(users, withPred(Minor.class));
}

• Functional Java, with a funky F

public static List<Integer> factors(final int number) {
    class Factor extends FF<Integer, Boolean> {{ out = number % in == 0; }}
    return range(1, number + 1).filter(withF(Factor.class, number));
}

• FEST-Assert, with a funky Condition

@Test
public void getMajorUsers_returns_no_minor_User() {
	List<User> majorUsers = userService.getMajorUsers();
	class Minor extends Cond<User> {{ out = in.getAge() < 18; }}
	assertThat(majorUsers).noneIs(Minor.class);
}

• Wicket, with a funky AbstractReadOnlyModel

class FortyTwo extends AROM<String> {{ out = "42"; }}
AbstractReadOnlyModel<String> readOnlyModel = withAROM(FortyTwo.class);

• Swing, with a funky ActionListener

class BtonClick extends ActL {{ doSomething(e); }}
jButton.addActionListener(withActL(BtonClick.class));

Sounds funky? We think it is ;-).

Informations

• It's pure Java, no magic involved. See How it works for details.
• All modules have 100% code coverage.
• To use FJF, Download the Maven artifacts.
• See the Detailed example to get into details.
• The latest release is the 1.0 version, see the release notes for more information.
• Licensed under the Apache License, v2.0.

Help

Looking for the documentation? Have a look at the Funky javadoc!

Any question? Please ask them on the dedicated Google Group.

Continuous Integration

FJF has continuous integration thanks to CloudBees DEV@Cloud free plan for FOSS projects.

Build time trend & Test Result Trend