I wrote the following line of code for a Java 8
project:
Comparator<Person> oldestPerson= Comparator.comparing(Person::getOldestBirthday);
It is a simple comparator, however I am trying to use this code In a project that only uses Java 7
, therefore giving this error:
"Method references are not supported at this language level"
I understand im getting the error as im not using Java 8. Is there a simple way to re-write the logic without having to use a method reference?
Comparator<Person> comparator = new Comparator<Person>() {
@Override
public int compare(Person p1, Person p2) {
return p1.getOldestBirthday().compareTo(p2.getOldestBirthday());
}
};
This is probably the simplest way to do it in Java 7
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