Prevent anonymous class from referencing outer members in Java

Question

In Java, is there a way to explicitly prevent an anonymous class to reference the outer class or method's members/local variables?

Answer 1

There isn't. You always define anonymous classes inside other classes, e.g.

class A {

    private String aMember;

    public void test() {
        B b = new B() {

            @Override
            public void b() {
                ...
            }
        };
    }
}

You can always use OuterClassName.this.something to access the outer class:

@Override
public void b() {
    A.this.aMember = "Hello";
}

Why do you want to restrict access to the outer class? Once we know that, we could better understand what you're trying to achieve.