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C++ Equivalent to Java Functional Interfaces

The closest C++ equivalent to Java's functional interfaces are C++ function pointers.

Java C++
@FunctionalInterface
public interface FooFunctional
{
    void invoke();
}

public class UseFunctionalInterface
{
    void method()
    {
        FooFunctional funcVar = () -> voidMethod();
        funcVar.invoke();
    }
    void voidMethod()
    {
    }
}
using FooFunctional = std::function <void()>;

class UseFunctionalInterface
{
public:
    virtual void method()
    {
        FooFunctional funcVar = [&] ()
        {
            voidMethod();
        };
        funcVar();
    }
    virtual void voidMethod()
    {
    }
};


Use Java to C++ Converter to convert from Java to C++.     

Additional resource: Java and C++ Equivalents


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