Can I access an outer class's field from a static inner class?

java

Solution

As you can see from other answers that you will need a non-static inner class to do that.

If you really cannot make your inner class non-static then you can add required getter and setter method in outer class and access them by creating an instance of outer class from inside inner static class:

public class A {
    private List<String> list = new ArrayList<>();
    public List<String> getList() {
        return list;
    }
    public void setList(List<String> list) {
        this.list = list;
    }
    public static class B {
        // i want to update list here without making list as static
        void updList() {
            A a = new A();
            a.setList(someOtherList);
            System.out.println(a.getList());
        }
    }
} 

Problem

Original source