diff --git a/src/main/java/CodeupCrypt.java b/src/main/java/CodeupCrypt.java
new file mode 100644
index 00000000..d512cf3f
--- /dev/null
+++ b/src/main/java/CodeupCrypt.java
@@ -0,0 +1,3 @@
+public class CodeupCrypt {
+
+}
diff --git a/src/main/java/Student.java b/src/main/java/Student.java
new file mode 100644
index 00000000..8d39cbe8
--- /dev/null
+++ b/src/main/java/Student.java
@@ -0,0 +1,39 @@
+import java.util.ArrayList;
+
+public class Student {
+    ArrayList<Integer> grades;
+    private String name;
+    private long id;
+
+    public Student(long id, String name){
+        this.name = name;
+        this.id = id;
+        this.grades = new ArrayList<>();
+    }
+
+    public String getName(){
+        return this.name;
+    }
+
+    public long getId(){
+        return this.id;
+    }
+
+    public void addGrade(int grade){
+        this.grades.add(grade);
+    }
+
+    // returns the average of the students grades
+    public double getGradeAverage(){
+        double result = 0;
+        for (int grade : this.getGrades()) {
+            result += grade;
+        }
+        return result / this.getGrades().size();
+    }
+
+    public ArrayList<Integer> getGrades(){
+        return this.grades;
+    }
+
+}
\ No newline at end of file
diff --git a/src/test/java/CodeupCryptTest.java b/src/test/java/CodeupCryptTest.java
new file mode 100644
index 00000000..e7588945
--- /dev/null
+++ b/src/test/java/CodeupCryptTest.java
@@ -0,0 +1,29 @@
+import org.junit.Before;
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class CodeupCryptTest {
+
+    @Test
+    public void testIfVersionIsSet(){
+        assertEquals(0.0, CodeupCrypt.version, 0);
+        CodeupCrypt.version = 1.2;
+        assertEquals(1.2, CodeupCrypt.version, 0);
+    }
+
+    @Test
+    public void testHashPassword(){
+        assertEquals("C0d39p", CodeupCrypt.hashPassword("Codeup"));
+        assertEquals("F3r", CodeupCrypt.hashPassword("Fer"));
+        assertEquals("123", CodeupCrypt.hashPassword("123"));
+        assertEquals("124", CodeupCrypt.hashPassword("12a"));
+    }
+
+    @Test
+    public void testCheckPassword(){
+        assertTrue("check password", CodeupCrypt.checkPassword("fer", "f3r"));
+        assertFalse("check password", CodeupCrypt.checkPassword("fer", "fer"));
+    }
+
+}
+
diff --git a/src/test/java/StudentTest.java b/src/test/java/StudentTest.java
new file mode 100644
index 00000000..5a269fce
--- /dev/null
+++ b/src/test/java/StudentTest.java
@@ -0,0 +1,37 @@
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertSame;
+
+public class StudentTest {
+    Student jordan;
+    Student studentWithManyGrades;
+
+    @Before
+    public void init(){
+        jordan = new Student(1, "Jordan Witt");
+        jordan.addGrade(90);
+        studentWithManyGrades = new Student(2, "Han Solo");
+        studentWithManyGrades.addGrade(90);
+        studentWithManyGrades.addGrade(80);
+        studentWithManyGrades.addGrade(50);
+    }
+
+    @Test
+    public void ifUserObjectCanBeCreated(){
+        assertEquals("Jordan Witt", jordan.getName());
+        assertEquals(1, jordan.getId());
+    }
+
+    @Test
+    public void testIfAddGradeWorks(){
+        assertSame(90, jordan.getGrades().get(0));
+    }
+
+    @Test
+    public void testIfAvgIsCorrect(){
+        assertEquals(90, jordan.getGradeAverage(), 0);
+        assertEquals(73.33333333333333, studentWithManyGrades.getGradeAverage(), 0);
+    }
+}
diff --git a/src/test/java/introTesting.java b/src/test/java/introTesting.java
new file mode 100644
index 00000000..bcd3333d
--- /dev/null
+++ b/src/test/java/introTesting.java
@@ -0,0 +1,52 @@
+import org.junit.Test;
+import static org.junit.Assert.*;
+import org.junit.Before;
+import java.util.ArrayList;
+import java.util.List;
+
+public class introTesting {
+    private List<String> names;
+
+    @Before
+    public void setUp(){
+        this.names = new ArrayList<>();
+        this.names.add("Fer");
+    }
+
+    // We can verify that the names list is not longer null because it was initialized in the setUp() method with the following test:
+    @Test
+    public void testIfNamesIsInitialized(){
+        assertNotNull(names);
+        System.out.println(names);
+    }
+
+    @Test
+    public void testIfANameCanBeAdded(){
+        assertEquals(1, this.names.size());
+        this.names.add("Zach");
+        assertEquals(2, this.names.size());
+//        assertSame("fer", this.names.get(0));
+        assertSame("Zach", this.names.get(1));
+        System.out.println(names);
+    }
+    @Test
+    public void testIfCompanyNameIsEquals() {
+        String expected = "Codeup";
+        String actual = "Codeup";
+
+        assertEquals(expected, actual);
+    }
+
+// When you're using floating points values a third parameter is required (Delta) which represents a positive margin of error of decimals.
+
+    @Test
+    public void testIfChangeIsCorrect() {
+        Double price = 10.0;
+        Double discount = 4.5;
+
+        assertEquals(5.5, price - discount, 0);
+        assertEquals(5.1, price - discount, 0.5);
+        assertNotEquals(4.9, price - discount, 0.5);
+    }
+
+}
diff --git a/src/test/java/production/junit-tests/CodeupCrypt.class b/src/test/java/production/junit-tests/CodeupCrypt.class
new file mode 100644
index 00000000..e74052b8
Binary files /dev/null and b/src/test/java/production/junit-tests/CodeupCrypt.class differ
diff --git a/src/test/java/production/junit-tests/Student.class b/src/test/java/production/junit-tests/Student.class
new file mode 100644
index 00000000..201138d3
Binary files /dev/null and b/src/test/java/production/junit-tests/Student.class differ
diff --git a/src/test/java/test/junit-tests/StudentTest.class b/src/test/java/test/junit-tests/StudentTest.class
new file mode 100644
index 00000000..45b85052
Binary files /dev/null and b/src/test/java/test/junit-tests/StudentTest.class differ
diff --git a/src/test/javatest/StudentTest.java b/src/test/javatest/StudentTest.java
new file mode 100644
index 00000000..c8923882
--- /dev/null
+++ b/src/test/javatest/StudentTest.java
@@ -0,0 +1,42 @@
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertSame;
+
+public class StudentTest {
+    Student jordan;
+    Student studentWithManyGrades;
+
+    @Before
+    public void init(){
+        jordan = new Student(1, "Jordan Witt");
+        jordan.addGrade(90);
+        studentWithManyGrades = new Student(2, "Han Solo");
+        studentWithManyGrades.addGrade(90);
+        studentWithManyGrades.addGrade(80);
+        studentWithManyGrades.addGrade(50);
+        System.out.println(jordan.getName());
+        System.out.println(studentWithManyGrades.getName() + studentWithManyGrades.getGrades());
+    }
+
+    @Test
+    public void ifUserObjectCanBeCreated(){
+        assertEquals("Jordan Witt", jordan.getName());
+        assertEquals(1, jordan.getId());
+        System.out.println(jordan.getId());
+    }
+
+    @Test
+    public void testIfAddGradeWorks(){
+        assertSame(90, jordan.getGrades().get(0));
+        System.out.println(jordan.grades);
+    }
+
+    @Test
+    public void testIfAvgIsCorrect(){
+        assertEquals(90, jordan.getGradeAverage(), 0);
+        assertEquals(73.33333333333333, studentWithManyGrades.getGradeAverage(), 0);
+        System.out.println(studentWithManyGrades.getName() + " " + studentWithManyGrades.getGradeAverage() + " " + jordan.getName() + jordan.getGradeAverage());
+    }
+}