How would you access the enclosing outer class's instance from within a nested inner class when there's a naming conflict (like a shadowed field with the same name), using the OuterClassName.this syntax?

When an inner class has its own field or local variable with the same name as one in the enclosing outer class (shadowing it, making the inner class's own version the one referenced by a plain, unqualified name), the qualified syntax OuterClassName.this.fieldName explicitly disambiguates and refers specifically to the outer instance's version of that member, bypassing the inner class's own shadowing member entirely -- this qualified `this` reference is also generally useful anytime you need an explicit reference to the enclosing instance itself (not just for disambiguating a naming conflict), such as passing the outer instance as an argument to another method.

public class Outer {
    private String name = "outer";

    class Inner {
        private String name = "inner";  // shadows Outer's 'name' field

        void printNames() {
            System.out.println(name);            // "inner" -- refers to Inner's own field
            System.out.println(this.name);       // "inner" -- same, explicit but still Inner's own
            System.out.println(Outer.this.name);  // "outer" -- explicitly qualified, refers to the OUTER instance's field
        }
    }
}