使用给定参数过滤Java流

Question

I have a List<MyObject> :

My Object:
    String name;
    String team;

EDIT: I want to create a function that will filter this list using two parameters:

public List<MyObject> filterMyObjectList (String name, String state, List<MyObject> objectsList)

I need to create two filters:

The first will filter the MyObject by the name, and will add to the returned list only objects where the MyObject.getName().equals(name) .

The second will filter the MyObject by the team using another function that I have ( getState(MyObject.getTeam()) ), and will add to the list only objects where the getState(MyObject.getTeam()).equals(state) .

Is there a way to write a predicate like this? Using a variable to compare? Is there another way to filter using comparison?

Thanks!

Answer 1

To do this you can just apply a filter:

public List<MyObject> filterMyObjectList (String name, String state, List<MyObject> objectsList) {
   return objectsList.stream()
                     .filter(obj -> obj.getName().equals(name) && getState(obj.getTeam()).equals(state))
                     .collect(Collectors.toList());
}

Since you are checking two conditions of the same object, you can aggregate them with && in the Predicate