如何从内部类访问变量而不将其声明为final

public class OuterClass {
    private int outerVariable = 10;

    public InnerClass getInnerClass() {
        return new InnerClass(outerVariable);
    }

    public class InnerClass {
        private int innerVariable;

        public InnerClass(int value) {
            innerVariable = value;
        }

        public void printVariables() {
            System.out.println("Outer variable: " + outerVariable);
            System.out.println("Inner variable: " + innerVariable);
        }
    }

    public static void main(String[] args) {
        OuterClass outer = new OuterClass();
        OuterClass.InnerClass inner = outer.getInnerClass();
        inner.printVariables();
    }
}