diff --git a/.settings/org.eclipse.jdt.apt.core.prefs b/.settings/org.eclipse.jdt.apt.core.prefs
new file mode 100644
index 0000000..d4313d4
--- /dev/null
+++ b/.settings/org.eclipse.jdt.apt.core.prefs
@@ -0,0 +1,2 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.apt.aptEnabled=false
diff --git a/.settings/org.eclipse.jdt.core.prefs b/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 0000000..f9bf4ae
--- /dev/null
+++ b/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,9 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=9
+org.eclipse.jdt.core.compiler.compliance=9
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=ignore
+org.eclipse.jdt.core.compiler.processAnnotations=disabled
+org.eclipse.jdt.core.compiler.release=disabled
+org.eclipse.jdt.core.compiler.source=9
diff --git a/.settings/org.eclipse.m2e.core.prefs b/.settings/org.eclipse.m2e.core.prefs
new file mode 100644
index 0000000..f897a7f
--- /dev/null
+++ b/.settings/org.eclipse.m2e.core.prefs
@@ -0,0 +1,4 @@
+activeProfiles=
+eclipse.preferences.version=1
+resolveWorkspaceProjects=true
+version=1
diff --git a/src/main/java/Main.java b/src/main/java/Main.java
index 843c2bd..5457382 100644
--- a/src/main/java/Main.java
+++ b/src/main/java/Main.java
@@ -1,8 +1,10 @@
-import java.util.ArrayList;
+
+//import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import java.util.stream.Collector;
 import java.util.stream.Collectors;
 
 public class Main {
@@ -13,90 +15,70 @@ public static void main(String[] args) {
     // Imperative approach ❌
 
     /*
-
-    List<Person> females = new ArrayList<>();
-
-    for (Person person : people) {
-
-      if (person.getGender().equals(Gender.FEMALE)) {
-        females.add(person);
-      }
-    }
-
-    females.forEach(System.out::println);
-
-    */
+     * List<Person> females = new ArrayList<>();
+     * 
+     * for (Person person : people) {
+     * 
+     * if (person.getGender().equals(Gender.FEMALE)) { females.add(person); } }
+     * 
+     * females.forEach(System.out::println);
+     */
 
     // Declarative approach ✅
-
     // Filter
-    List<Person> females = people.stream()
-        .filter(person -> person.getGender().equals(Gender.FEMALE))
+    List<Person> females = people.stream().filter(person -> person.getGender().equals(Gender.FEMALE))
         .collect(Collectors.toList());
 
-//    females.forEach(System.out::println);
+    females.forEach(System.out::println);
 
     // Sort
-    List<Person> sorted = people.stream()
-        .sorted(Comparator.comparing(Person::getAge).thenComparing(Person::getGender).reversed())
-        .collect(Collectors.toList());
+    List<Person> sorted = people.stream().sorted(Comparator.comparing(Person::getAge)).collect(Collectors.toList());
 
-//    sorted.forEach(System.out::println);
+    // sorted.forEach(System.out::println);
 
     // All match
-    boolean allMatch = people.stream()
-        .allMatch(person -> person.getAge() > 8);
+    boolean allMatch = people.stream().allMatch(person -> person.getAge() > 8);
+    System.out.println(allMatch);
 
-//    System.out.println(allMatch);
     // Any match
-    boolean anyMatch = people.stream()
-        .anyMatch(person -> person.getAge() > 121);
+    boolean anyMatch = people.stream().anyMatch(person -> person.getAge() > 8);
+    System.out.println(anyMatch);
 
-//    System.out.println(anyMatch);
     // None match
-    boolean noneMatch = people.stream()
-        .noneMatch(person -> person.getName().equals("Antonio"));
-
-//    System.out.println(noneMatch);
+    boolean noneMatch = people.stream().noneMatch(person -> person.getName().equals("Fulanito"));
+    System.out.println(noneMatch);
 
     // Max
-    people.stream()
-        .max(Comparator.comparing(Person::getAge));
-//        .ifPresent(System.out::println);
+    // Optional<Person> max =
+    people.stream().max(Comparator.comparing(Person::getAge)).ifPresent(person -> {
+      System.out.println(person);
+    });
+    // System.out.println(max);
 
     // Min
-    people.stream()
-        .min(Comparator.comparing(Person::getAge));
-//        .ifPresent(System.out::println);
+    people.stream().min(Comparator.comparing(Person::getAge)).ifPresent(System.out::println);
 
     // Group
-    Map<Gender, List<Person>> groupByGender = people.stream()
-        .collect(Collectors.groupingBy(Person::getGender));
+    Map<Gender, List<Person>> groupoByGender = people.stream().collect(Collectors.groupingBy(Person::getGender));
+    // System.out.println(groupoByGender);
+    groupoByGender.forEach((gender, people1) -> {
+      System.out.println(gender);
+      people1.forEach(System.out::println);
+      System.out.println();
+    });
 
-//    groupByGender.forEach((gender, people1) -> {
-//      System.out.println(gender);
-//      people1.forEach(System.out::println);
-//      System.out.println();
-//    });
+    Optional<String> mujerMasMAyor = people.stream().filter(person -> person.getGender().equals(Gender.FEMALE))
+        .max(Comparator.comparing(Person::getAge)).map(Person::getName);
 
-    Optional<String> oldestFemaleAge = people.stream()
-        .filter(person -> person.getGender().equals(Gender.FEMALE))
-        .max(Comparator.comparing(Person::getAge))
-        .map(Person::getName);
+    mujerMasMAyor.ifPresent(System.out::println);
 
-    oldestFemaleAge.ifPresent(System.out::println);
   }
 
   private static List<Person> getPeople() {
-    return List.of(
-        new Person("Antonio", 20, Gender.MALE),
-        new Person("Alina Smith", 33, Gender.FEMALE),
-        new Person("Helen White", 57, Gender.FEMALE),
-        new Person("Alex Boz", 14, Gender.MALE),
-        new Person("Jamie Goa", 99, Gender.MALE),
-        new Person("Anna Cook", 7, Gender.FEMALE),
-        new Person("Zelda Brown", 120, Gender.FEMALE)
-    );
+    return List.of(new Person("Antonio", 20, Gender.MALE), new Person("Alina Smith", 33, Gender.FEMALE),
+        new Person("Helen White", 57, Gender.FEMALE), new Person("Alex Boz", 14, Gender.MALE),
+        new Person("Jamie Goa", 99, Gender.MALE), new Person("Anna Cook", 7, Gender.FEMALE),
+        new Person("Zelda Brown", 120, Gender.FEMALE));
   }
 
 }