How to find an object in a List by property using Java 8

Somya

Asked on May 01, 2016

I have a class

public class Person {

private int pid;

private String location;

private String name;

}

I have overridden hashCode() and equals() methods.

Now I have a List<Person>.

How to find an object in our list by property(suppose pid) using Java 8?

Arvind

Replied on May 01, 2016

Create a Predicate and use Java 8 Filter.

Person getPersonById(int pid) {

Predicate<Person> personPredicate = p-> p.getPid() == pid;

Person obj = list.stream().filter(personPredicate).findFirst().get();

return obj;

}

It will return Person object with given pid fetching from List.

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