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+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="GlobalLibrariesConfigurable.UI">
+        <settings>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="JdkListConfigurable.UI">
+        <settings>
+          <last-edited>1.8</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="ModuleStructureConfigurable.UI">
+        <settings>
+          <last-edited>ZCW-Lambdas</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+                <option value="0.6" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="ProjectJDKs.UI">
+        <settings>
+          <last-edited>1.8</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="ProjectLibrariesConfigurable.UI">
+        <settings>
+          <last-edited>Maven: org.apiguardian:apiguardian-api:1.0.0</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+    </states>
+  </component>
+</project>

ZCW-Lambdas.iml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4" />

pom.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>LabLambdas</groupId>
+    <artifactId>LambdasLab</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <dependencies>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>5.2.0</version>
+        </dependency>
+    </dependencies>
+
+
+</project>

src/main/java/Person.java

@@ -0,0 +1,99 @@
+import java.time.LocalDate;
+import java.time.Period;
+import java.util.List;
+
+public class Person {
+
+    public enum Sex {
+        MALE, FEMALE
+    }
+
+    String name;
+    LocalDate birthday;
+    Sex gender;
+    String emailAddress;
+
+    public Person(String name, LocalDate birthday, Sex gender, String email) {
+        this.name = name;
+        this.birthday = birthday;
+        this.gender = gender;
+        this.emailAddress = email;
+    }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public LocalDate getBirthday() {
+        return this.birthday;
+    }
+
+    public Sex getGender() {
+        return this.gender;
+    }
+
+    public String getEmailAddress() {
+        return this.emailAddress;
+    }
+
+    public int getAge() {
+        return Period.between(this.birthday, LocalDate.now()).getYears();
+    }
+
+    public void printPerson() {
+        System.out.println(String.format("%s %s %s %s", this.name, this.gender, getAge(), this.emailAddress));
+    }
+
+    public static void printPersonsOlderThan(List<Person> roster, int age) {
+        for (Person p : roster) {
+            if (p.getAge() >= age) {
+                p.printPerson();
+            }
+        }
+    }
+
+    public static void printPersonsWithinAgeRange(
+            List<Person> roster, int low, int high) {
+        for (Person p : roster) {
+            if (low <= p.getAge() && p.getAge() < high) {
+                p.printPerson();
+            }
+        }
+    }
+
+    public static int printPersons(
+            List<Person> roster, CheckPerson tester) {
+        int counter = 0;
+        for (Person p : roster) {
+            if (tester.test(p)) {
+                p.printPerson();
+                counter++;
+            }
+        }
+        return counter;
+    }
+
+    interface CheckPerson {
+        boolean test(Person p);
+    }
+
+    /* LOCAL CLASS */
+    class PersonChecker implements CheckPerson {
+        public boolean test(Person p) {
+            return p.getAge() > 15;
+        }
+    }
+
+    /* ANONYMOUS CLASS */
+    CheckPerson checker = new CheckPerson() {
+        @Override
+        public boolean test(Person p) {
+            return p.getAge() > 15;
+        }
+    };
+
+    /* LAMBDA EXPRESSION */
+    CheckPerson checkerLambda = (Person p) -> p.getAge() > 15;
+
+
+}

src/test/java/TestPerson.java

@@ -0,0 +1,65 @@
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.time.LocalDate;
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class TestPerson {
+
+    private List peopleList;
+    private Person prsn1;
+
+    @BeforeEach
+    public void initialize() {
+        prsn1 = new Person("John", LocalDate.of(1989, 6, 15), Person.Sex.MALE, "john@google.com");
+        Person prsn2 = new Person("Melissa", LocalDate.of(1989, 3, 15), Person.Sex.FEMALE, "melissa@google.com");
+        Person prsn3 = new Person("Ray", LocalDate.of(2009, 3, 15), Person.Sex.MALE, "ray@google.com");
+        peopleList = new ArrayList();
+        peopleList.add(prsn1);
+        peopleList.add(prsn2);
+        peopleList.add(prsn3);
+    }
+
+    @Test
+    public void testGetAge() {
+        Person prsn = new Person("John", LocalDate.of(1989, 11, 15), Person.Sex.MALE, "john@google.com");
+        int expected = 28;
+        int actual = prsn.getAge();
+        assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testGetAge2() {
+        Person prsn = new Person("John", LocalDate.of(1989, 3, 15), Person.Sex.MALE, "john@google.com");
+        int expected = 29;
+        int actual = prsn.getAge();
+        assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testLambda() {
+
+        int expected = 2;
+        int actual = Person.printPersons(peopleList, prsn1.checkerLambda);
+        assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testAnonymousClass() {
+        int expected = 2;
+        int actual = Person.printPersons(peopleList, prsn1.checker);
+        assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testLocalClass() {
+        int expected = 2;
+        Person.PersonChecker pc = prsn1.new PersonChecker();
+        int actual = Person.printPersons(peopleList, pc);
+        assertEquals(expected, actual);
+    }
+}