How can I access a field of a local inner class from another method?

Consider the field bar of the local-inner class MyValue:

public class C {

public static void main(String x[]) {

    class MyValue implements IValue {
    String bar = "bar";
    public String  getValue() {
        return "my value";
    } 
    }
    MyValue myValue = new MyValue();

    D d = new D();
    d.accessBar(myValue);
}
}      

which implements the IValue interface:

interface IValue {
public String getValue();
}

How can I access the field bar from another function (outside of main), let's say in class D:

class D {
public void accessBar(IValue value) {
    String info = value.getValue() + value.bar;
}   
}