Java - How to access Outer class field if the fields have same name

Question

Consider the following code

class OuterClass{
    class InnerClass{
        int x;
        int y;
        void calculateX(){
            x = y+z;//I want to acce         


        

Answer 1

The best solution is to give the fields meaningful and distinguishing names. But this is not always possible...

To get a field or an outer instance you can use

OuterClass.this.y;

or if the field is static

OuterClass.y;

Note: y is often short for this.y (depending on where y actually is defined)

Similarly, to call an instance method of an outer class you need.

OuterClass.this.method();

or

OuterClass.method(); // static

Note: in Java 8 you have method references which might be instance based. e.g.

 list.stream().filter(OuterClass.this::predicate);