ダイヤモンドオペレータでいけタワー(JUnit使えよという)

Test.java

import java.util.*;
import java.util.stream.*;





public class Test {

    public static void main(String... args) {
        new Test().test();
    }


    public void test() {
        List<HogeBean> hogeList = createStub();
        List<Pair<String, String>> pairList = hogeList.stream()
        .map(h -> new Pair<>(h.getName(), h.getValue()))
        .collect(Collectors.toList());
        pairList.stream().forEach(p -> System.out.println(p.getKey() + ":" + p.getValue()));
    }
    
    private List<HogeBean> createStub() {
        List<HogeBean> hogeList = new ArrayList<>();
        hogeList.add(new HogeBean("a", "あ"));
        hogeList.add(new HogeBean("b", "い"));
        hogeList.add(new HogeBean("c", "う"));
        hogeList.add(new HogeBean("d", "え"));
        return hogeList;
    }
    
    private class HogeBean {
        private String name;
        private String value;
        HogeBean(String name, String value) {
            this.name = name;
            this.value = value;
        }
        public String getName() {
            return this.name;
        }
        public String getValue() {
            return this.value;
        }
    }
    
    private class Pair <K, V> {
       private K key;
       private V value;
       Pair(K key, V value) {
           this.key = key;
           this.value = value;
       }
        public K getKey() {
            return this.key;
        }
        public V getValue() {
            return this.value;
        }
    }


}