In Java 8 and later, you can use the findFirst
method of the Stream
interface to find the first element in a List
that matches a given condition.
To find an element in a List
by a specific property, you can use the findFirst
method in combination with the filter
method, which allows you to specify a predicate (a condition) that the elements of the List
must satisfy.
Here is an example of how you can use the findFirst
and filter
methods to find an element in a List
by a specific property:
import java.util.List; import java.util.Arrays; public class MyClass { public static void main(String[] args) { List<Person> people = Arrays.asList( new Person("Alice", 25), new Person("Bob", 30), new Person("Charlie", 35) ); Person result = people.stream() .filter(p -> "Charlie".equals(p.getName())) .findFirst() .orElse(null); System.out.println(result); // Outputs "Person{name='Charlie', age=35}" } } class Person { private String name; private int age; public Person(String name,int age){ this.name = name; this.age = age; } }