Question

I’ve some class with these methods:

public class TestClass
{

    public void method1()
    {
        // this method will be used for consuming MyClass1
    }

    public void method2()
    {
        // this method will be used for consuming MyClass2
    }
}

and classes:

public class MyClass1
{
}

public class MyClass2
{
}

and I want HashMap<Class<?>, "question"> where I would store (key: class, value: method) pairs like this ( class “type” is associated with method )

hashmp.add(Myclass1.class, "question");

and I want to know how to add method references to HashMap (replace “question”).

p.s. I’ve come from C# where I simply write Dictionary<Type, Action> 🙂

Answer 1

This is feature which is likely to be Java 8. For now the simplest way to do this is to use reflection.

public class TestClass {
    public void method(MyClass1 o) {
        // this method will be used for consuming MyClass1
    }

    public void method(MyClass2 o) {
        // this method will be used for consuming MyClass2
    }
}

and call it using

Method m = TestClass.class.getMethod("method", type);