Demonstrating bi-directional dependencies between Groovy and Java

gistfile1.txt

joint_compile $ ls
FirstGroovy.groovy	FirstJava.java		SecondGroovy.groovy	SecondJava.java
joint_compile $ cat FirstGroovy.groovy 
class FirstGroovy {
    FirstJava firstJava
}

joint_compile $ cat FirstJava.java 
public class FirstJava {
    SecondGroovy secondGroovy;
}

joint_compile $ cat SecondGroovy.groovy 
class SecondGroovy {
    FirstJava firstJava
    FirstGroovy firstGroovy
    SecondJava secondJava
}

joint_compile $ cat SecondJava.java 
public class SecondJava {
    SecondGroovy secondGroovy;
}

joint_compile $ groovyc *
joint_compile $ 
joint_compile $ ls
FirstGroovy.class	FirstGroovy.groovy	FirstJava.class		FirstJava.java		SecondGroovy.class	SecondGroovy.groovy	SecondJava.class	SecondJava.java