Java lambda expression

// src/edu/umb/cs680/test/App.java
package edu.umb.cs680.test;

import edu.umb.cs680.test.other.Other;

public class App {
    public static void main(String[] args) {
        Other someNumbers = new Other();
        int y = 2;

        // This lambda expression doesn't have acess to <Other.sort>'s local context
        // since its enclosing method is App.main
        // it can only access y not x
        // similarly, the enclosing class is App, not Other
        someNumbers.sort((a, b) -> {
            System.out.println(y);
            // System.out.println(x);
            return a - b;
        });
    }
}

// src/edu/umb/cs680/test/other/Other.java
package edu.umb.cs680.test.other;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

public class Other {
    private ArrayList<Integer> numbers;

    public Other() {
        numbers = new ArrayList<Integer>();
        for (int i = 0; i < 10; i++) {
            numbers.add(Integer.valueOf(i));
        }
    }

    public void sort(Comparator<Integer> comparator) {
        int x = 1;
        Collections.sort(numbers, comparator);
    }
}