list泛型和list对象交集

public static void main(String[] args) {

      List<Test >testList = new ArrayList<>();
      Test test= new Test ();
      test.setId(1);
      test.setCode("aasdf");
      testList.add(test);

      Test test2= new Test ();
      test2.setId(2);
      test2.setCode("aasdf");
      testList.add(channel2);

      Test test3= new Test ();
      test3.setId(3);
      test3.setCode("aa1sdf123");
      testList.add(channel3);

      System.out.println(testList);
      System.out.println("---------------");
      List<String> list = new ArrayList<>();
      list.add("aasdf");
      List<Test> filterList = testList.stream().filter(a ->
              list.contains(a.getCode())).collect(Collectors.toList());
      System.out.println(filterList);
  }