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package fixtures;
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import java.util.*;
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import java.util.stream.*;
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public class Valid {
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public static class Person {
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private final int id;
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private final String name;
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private final String email;
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public Person(int id, String name, String email) {
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this.id = id;
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this.name = name;
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this.email = email;
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}
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public int getId() { return id; }
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public String getName() { return name; }
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public String getEmail() { return email; }
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@Override
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public String toString() {
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return name + " <" + email + ">";
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}
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}
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public static class Repository<T> {
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private final Map<Integer, T> items = new HashMap<>();
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public void add(int key, T item) {
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items.put(key, item);
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}
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public Optional<T> find(int key) {
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return Optional.ofNullable(items.get(key));
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}
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public List<T> getAll() {
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return new ArrayList<>(items.values());
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}
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}
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public static int add(int a, int b) {
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return a + b;
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}
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public static void main(String[] args) {
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Repository<Person> repo = new Repository<>();
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repo.add(1, new Person(1, "Alice", "alice@example.com"));
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repo.add(2, new Person(2, "Bob", "bob@example.com"));
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repo.getAll().stream()
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.map(Person::getName)
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.forEach(System.out::println);
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System.out.println("3 + 4 = " + add(3, 4));
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}
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}
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