diff --git a/H071191020/Praktikum-2/Box.java b/H071191020/Praktikum-2/Box.java
new file mode 100644
index 0000000..c1a9ee2
--- /dev/null
+++ b/H071191020/Praktikum-2/Box.java
@@ -0,0 +1,29 @@
+class Box {
+    
+    private double width;
+    private double height;
+    private double depth;
+    private double mass;
+    private double density;
+
+    public Box (double width, double height, double depth) {
+        this.width = width;
+        this.height = height;
+        this.depth = depth;
+    }
+    public void setWidth(double width) {
+        this.width = width;
+    }
+    public void setHeight(double height) {
+        this.height = height;
+    }
+    public void setDepth (double depth) {
+        this.depth = depth;
+    }
+    public void setMass (double mass) {
+        this.mass = mass;
+    }
+    public double getDensity() {
+        return mass/(width*height*depth);
+    }
+}
\ No newline at end of file
diff --git a/H071191020/Praktikum-2/BoxMain.java b/H071191020/Praktikum-2/BoxMain.java
new file mode 100644
index 0000000..9ebe019
--- /dev/null
+++ b/H071191020/Praktikum-2/BoxMain.java
@@ -0,0 +1,17 @@
+import java.util.Scanner;
+
+public class BoxMain {
+
+    public static void main(String[] args) {
+        Scanner input = new Scanner(System.in);
+        double width = input.nextDouble();
+        double height = input.nextDouble();
+        double depth = input.nextDouble();
+        double mass = input.nextDouble();
+        Box box = new Box(width, height, depth);
+        box.setMass(mass);
+        System.out.println("Massa Jenis = " + box.getDensity());
+        box.setMass(mass*2);
+        System.out.println("Massa Jenis = " + box.getDensity());
+    }
+}
\ No newline at end of file
diff --git a/H071191020/Praktikum-2/Main.java b/H071191020/Praktikum-2/Main.java
new file mode 100644
index 0000000..4752d85
--- /dev/null
+++ b/H071191020/Praktikum-2/Main.java
@@ -0,0 +1,16 @@
+public class Main {
+
+    public static void main(String[] args) {
+        int defense = 15;
+        int attack = 30;
+        Player player1 = new Player ("Mino", attack, defense);
+        Player player2 = new Player ("Hilda", defense);
+        
+        player2.setAttackPower(35);
+
+        player1.getDamage(player2);
+        player2.getDamage(player1);
+        player1.status();
+        player2.status();
+    }
+}
\ No newline at end of file
diff --git a/H071191020/Praktikum-2/Player.java b/H071191020/Praktikum-2/Player.java
new file mode 100644
index 0000000..394e24c
--- /dev/null
+++ b/H071191020/Praktikum-2/Player.java
@@ -0,0 +1,39 @@
+class Player {
+
+    private final String name;
+    private int hp;
+    private int attackPower;
+    private final int defense = 100;
+    defense = 10;
+
+    public Player(final String name, final int defense) {
+        this.name = name;
+        this.defense = defense;
+        hp = 100;
+    }
+
+    public Player(final String name, final int attackPower, final int defense) {
+        this.name = name;
+        this.attackPower = attackPower;
+        this.defense = defense;
+        hp = 100;
+    }
+
+    public void setAttackPower(final int attackPower) {
+        this.attackPower = attackPower;
+    }
+
+    public int getAttackPower() {
+        return attackPower;
+    }
+
+    public void getDamage(final Player enemy) {
+        hp = hp - (enemy.getAttackPower()-defense);
+    }
+    public void status () {
+        System.out.println(name + " Status");
+        System.out.println("HP = " + hp);
+        System.out.println("Defense = " + defense);
+        System.out.println("Attack = " + attackPower);
+    }
+}
\ No newline at end of file
diff --git a/H071191020/Praktikum_1/Lampu.class b/H071191020/Praktikum_1/Lampu.class
new file mode 100644
index 0000000..97c1958
Binary files /dev/null and b/H071191020/Praktikum_1/Lampu.class differ
diff --git a/H071191020/Praktikum_1/Lampu.java b/H071191020/Praktikum_1/Lampu.java
new file mode 100644
index 0000000..ee08c8e
--- /dev/null
+++ b/H071191020/Praktikum_1/Lampu.java
@@ -0,0 +1,28 @@
+class Lampu {
+
+    private boolean blueIsOn;
+    private boolean redIsOn;
+
+    public void turnOn() {
+        if (blueIsOn && redIsOn) {
+            blueIsOn = true;
+            redIsOn= false;
+        } else if(blueIsOn && !redIsOn) {
+            blueIsOn = false;
+            redIsOn = true;
+        } else {
+            blueIsOn = true;
+            redIsOn = false;
+        }
+    }
+    public void turnOff() {
+        blueIsOn = false;
+        redIsOn = false;
+    }
+
+    public void getState() {
+        System.out.println(blueIsOn ? "Biru ON" : "Biru OFF");
+        System.out.println(redIsOn ? "Merah ON" : "Merah OFF");
+        System.out.println();
+    }
+}
\ No newline at end of file
diff --git a/H071191020/Praktikum_1/Main.class b/H071191020/Praktikum_1/Main.class
new file mode 100644
index 0000000..0fadf1d
Binary files /dev/null and b/H071191020/Praktikum_1/Main.class differ
diff --git a/H071191020/Praktikum_1/Main.java b/H071191020/Praktikum_1/Main.java
new file mode 100644
index 0000000..c82e599
--- /dev/null
+++ b/H071191020/Praktikum_1/Main.java
@@ -0,0 +1,19 @@
+/**
+ * Main
+ */
+public class Main {
+
+    public static void main(String[] args) {
+        Lampu lampu1 = new Lampu();
+        lampu1.turnOn();
+        lampu1.getState();
+        lampu1.turnOn();
+        lampu1.getState();
+        lampu1.turnOn();
+        lampu1.getState();
+        lampu1.turnOn();
+        lampu1.getState();
+        lampu1.turnOff();
+        lampu1.getState();
+    }
+}
\ No newline at end of file
diff --git a/assigntment-01/H071191020/Main.class b/assigntment-01/H071191020/Main.class
new file mode 100644
index 0000000..3fd357b
Binary files /dev/null and b/assigntment-01/H071191020/Main.class differ
diff --git a/assigntment-01/H071191020/Main.java b/assigntment-01/H071191020/Main.java
new file mode 100644
index 0000000..2d9cf61
--- /dev/null
+++ b/assigntment-01/H071191020/Main.java
@@ -0,0 +1,58 @@
+import java.util.*;
+public class Main{
+    public static void main(String[] args) {
+        Map<String, String> facultyMap = new HashMap<>();
+        Map<String, String> majorMap = new HashMap<>();
+        facultyMap.put("Nama Fakultas Lain", "A");
+        facultyMap.put("Nama Fakultas Lain", "B");
+        facultyMap.put("Nama Fakultas Lain", "C");
+        facultyMap.put("Nama Fakultas Lain", "D");
+        facultyMap.put("Nama Fakultas Lain", "E");
+        facultyMap.put("Nama Fakultas Lain", "F");
+        facultyMap.put("Nama Fakultas Lain", "G");
+        facultyMap.put("MIPA", "H");
+        majorMap.put("Prodi Lain", "01");
+        majorMap.put("Prodi Lain", "02");
+        majorMap.put("Prodi Lain", "03");
+        majorMap.put("Prodi Lain", "04");
+        majorMap.put("Prodi Lain", "05");
+        majorMap.put("Prodi Lain", "06");
+        majorMap.put("Ilmu Komputer", "07");
+
+        Student student1 = new Student();
+        Student student2 = new Student();
+        Student student3 = new Student();
+
+        student1.setFirstName("mUHammAd");
+        student1.setLastName("fITRAH");
+        student1.setRegisterYear(2017);
+        student1.setFaculty("MIPA");
+        student1.setDepartment("Matematika");
+        student1.setMajor("Ilmu Komputer");
+        student1.setId(facultyMap, majorMap);
+        student1.setEmail(facultyMap);
+
+        student2.setFirstName("KENNEDY");
+        student2.setLastName("");
+        student2.setRegisterYear(2017);
+        student2.setFaculty("MIPA");
+        student2.setDepartment("Matematika");
+        student2.setMajor("Ilmu Komputer");
+        student2.setId(facultyMap, majorMap);
+        student2.setEmail(facultyMap);
+
+        student3.setFirstName("Khawaritzmi");
+        student3.setLastName("abdallah ahmad");
+        student3.setRegisterYear(2017);
+        student3.setFaculty("MIPA");
+        student3.setDepartment("Matematika");
+        student3.setMajor("Ilmu Komputer");
+        student3.setId(facultyMap, majorMap);
+        student3.setEmail(facultyMap);
+
+        student1.description();
+        student2.description();
+        student3.description();
+
+    }
+} 
\ No newline at end of file
diff --git a/assigntment-01/H071191020/Student.class b/assigntment-01/H071191020/Student.class
new file mode 100644
index 0000000..9e370b3
Binary files /dev/null and b/assigntment-01/H071191020/Student.class differ
diff --git a/assigntment-01/H071191020/Student.java b/assigntment-01/H071191020/Student.java
new file mode 100644
index 0000000..49f5dc9
--- /dev/null
+++ b/assigntment-01/H071191020/Student.java
@@ -0,0 +1,77 @@
+import java.util.Map;
+import java.util.Random;
+public class Student{
+    private String id;
+    private String firstName;
+    private String lastName;
+
+    private String email;
+    private int registerYear;
+    private String faculty;
+    private String departemen;
+    private String major;
+
+    public void setId(Map<String, String>facultyMap, Map<String, String>majorMap){
+    Random randoms = new Random();
+    this.id = facultyMap.get(faculty) + majorMap.get(major) + "1" + String.valueOf(registerYear).substring(2) + "1" + String.format("%03d", randoms.nextInt(061));
+    }
+    public String getId(){
+        return id;
+    }
+    public void setFirstName(String firstName){
+
+        this.firstName = firstName;
+    }
+    public void setLastName(String lastName){
+        this.lastName = lastName;
+    }
+    public String getFullName(){
+        String fullName[] = (firstName.toLowerCase() + " " + lastName.toLowerCase()).split(" ");
+        String Name = "";
+        for (int i = 0; i < fullName.length;i++) {
+            Name+= fullName[i].substring(0,1).toUpperCase()+ fullName[i].substring(1) + " ";
+        }
+        return Name;
+    }
+    public void setEmail(Map<String, String>facultyMap){
+        String fullName[] = (firstName.toLowerCase() + " " + lastName.toLowerCase()).split(" ");
+        String Name = "";
+        for (int i = 0; i < fullName.length -1;i++) {
+            Name+= fullName[i].substring(0,1);
+        }
+        this.email = (fullName[fullName.length - 1]+ Name + String.valueOf(registerYear).substring(2) + facultyMap.get(faculty) + "@student.unhas.ac.id").toLowerCase();
+    }
+    public String getEmail(String email){
+        return email;
+    }
+    public void setRegisterYear(Integer registerYear){
+        this.registerYear = registerYear;
+    }
+    public void setFaculty(String faculty){
+        this.faculty = faculty;
+    }
+    public String getFaculty(String faculty){
+        return faculty;
+    }
+    public void setDepartment(String departemen){
+        this.departemen = departemen;
+    }
+    public String getDepartment(String departemen){
+        return departemen;
+    }
+    public void setMajor(String major){
+        this.major = major;
+    }
+    public String getMajor(){
+        return major;
+    }
+    public void description() {
+        System.out.println("Nama            : " + getFullName() );
+        System.out.println("NIM             : " + getId());
+        System.out.println("Email Mahasiswa : " + getEmail(email));
+        System.out.println("Fakultas        : " + getFaculty(faculty));
+        System.out.println("Departemen      : " + getDepartment(departemen));
+        System.out.println("Program Studi   : " + getMajor());
+        System.out.println();
+    }
+} 
\ No newline at end of file