package com.example.kotlin.hellokotlin

open class KotlinBaseClass
{
    internal fun doSomething()
    {
        println("Done something!")
    }
}

package com.example.kotlin.hellokotlin

class KotlinDerivedClass : BaseClass()
{
    fun doSomethingElse()
    {
        doSomething()
        println("Done something else!")
    }
}

package com.example.kotlin.hellokotlin;

public class JavaDerivedClass extends KotlinBaseClass
{
    public void doSomethingElse()
    {
        doSomething();
        System.out.println("Done something else!");
    }
}