AnonymousImpl.java

package com.java8;

public class AnonymousImpl{

    public static void main(String[] args) {

        // anonymous implementation
        IFilterText anonymousFilter = new IFilterText() {
            @Override
            public boolean filter(String text) {
                return text.equals("fooBar");
            }
        };
        System.out.println(anonymousFilter.filter("fooBar"));

    }
}