Add AgeGreaterThanThirty class to filter and print names of persons older than 20

Author: kumarcodes

src/main/java/com/java8/AgeGreaterThanThirty.java

@@ -0,0 +1,15 @@
+package com.java8;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class AgeGreaterThanThirty {
+    public static void main(String[] args) {
+        List<Person> personList = Arrays.asList(new Person("Alice", Arrays.asList("Red", "Yellow"), 49),
+                new Person("Tom", Arrays.asList("Blue", "Orange", "Red"), 22),
+                new Person("Rohit", Arrays.asList("Blue", "Orange", "Red"), 21),
+                new Person("Bob", Arrays.asList("Red", "Yellow", "Black"), 19));
+        List<String> names = personList.stream().filter(x -> x.getAge() > 20).map(Person::getName).toList();
+        names.stream().distinct().sorted().forEach(System.out::println);
+    }
+}

src/main/java/com/java8/FlatMapExample.java

@@ -5,12 +5,12 @@
 
 public class FlatMapExample {
     public static void main(String[] args) {
-        List<Person> personList = Arrays.asList(new Person("Alice", Arrays.asList("Red", "Yellow")),
-                new Person("Tom", Arrays.asList("Blue", "Orange", "Red")),
-                new Person("Bob", Arrays.asList("Red", "Yellow", "Black")));
+        List<Person> personList = Arrays.asList(new Person("Alice", Arrays.asList("Red", "Yellow"), 33),
+                new Person("Tom", Arrays.asList("Blue", "Orange", "Red"), 22),
+                new Person("Bob", Arrays.asList("Red", "Yellow", "Black"), 19));
         List<List<String>> colorList = personList.stream().map(Person::getColor).toList();
         System.out.println(colorList);
-        List<String> colors = personList.stream().flatMap(x->x.getColor().stream()).toList();
+        List<String> colors = personList.stream().flatMap(x -> x.getColor().stream()).toList();
         System.out.println(colors);
     }
 }

src/main/java/com/java8/Person.java

@@ -5,10 +5,20 @@
 public class Person {
     String name;
     List<String> color;
+    int age;
 
-    public Person(String name, List<String> color) {
+    public Person(String name, List<String> color, int age) {
         this.name = name;
         this.color = color;
+        this.age = age;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
     }
 
     public String getName() {