Compile with `--enable-preview`

Java14RecordExample.java

public class Java14RecordExample {
    public static void main(String[] args) {
        var p = new Person("Boz", "Scaggs");

        System.out.println("toString(): " + p);
        System.out.println("---");
        System.out.println("Howdy " + p.name() + "!");
    }
}

record Person(String firstName, String lastName) {
    public Person {
        requireNonNull(firstName, "firstName is required");
        requireNonNull(lastName, "lastName is required");
    }

    public String name() {
        return firstName + " " + lastName;
    }
}