Calling Groovy closure from Java

After spending some time with Groovy alone i thought to mix Groovy code with Java. As closures seems the most weird in Groovy i tried to access a closure method from the Java class.

// Groovy code

class ClosureTest{

String firstName

String lastName

def proc(Closure closure){

closure.call(firstName, lastName)

}

}

// Groovy client

def ct = new ClosureTest()

ct.firstName = "dhaval"

ct.lastName = "nagar"

ct.proc{fn, ln -> println "$fn, $ln"}

// Java client

import groovy.lang.Closure;

class JavaClosureClient{

public static void main(String[] args){

ClosureTest ct = new ClosureTest();

ct.setFirstName("dhaval");

ct.setLastName("nagar");

ct.proc(new Closure(ct){

public Object call(Object[] argument){

System.out.println(argument[0] + ", " + argument[1]);

return null;

}

});

}

}

Well the difference shows the verbosity of the Java client compared to the Groovy one.

At my workplace we are not in a position to use Groovy extensively but with such silent integration between the two i am sure we can leverage some of the Groovy features.