diff --git a/FaktorialLoop.java b/FaktorialLoop.java
new file mode 100644
index 0000000..09c5d3f
--- /dev/null
+++ b/FaktorialLoop.java
@@ -0,0 +1,17 @@
+public class FaktorialLoop{
+    public static void main(String[] args){
+        if(args.length != 1){
+            System.out.println("Usage: java FaktorialLoop <number>");
+            return;
+        }
+
+        long number = Integer.parseInt(args[0]);
+        long total = 1;
+
+        for(long i=number; i > 1; i--){
+            total *= i;
+        }
+        
+        System.out.println("Faktorial dengan for: " + total);
+    }
+}
\ No newline at end of file
diff --git a/FaktorialRekursi.java b/FaktorialRekursi.java
new file mode 100644
index 0000000..66f877c
--- /dev/null
+++ b/FaktorialRekursi.java
@@ -0,0 +1,21 @@
+public class FaktorialRekursi{
+    public static void main(String[] args){
+        if(args.length != 1){
+            System.out.println("Usage: java FaktorialRekursi <number>");
+            return;
+        }
+
+        int number = Integer.parseInt(args[0]);
+
+        FaktorialRekursi factorial = new FaktorialRekursi();
+        System.out.println("Faktorial dengan rekursi: " + factorial.calc(number));
+    }
+
+    public long calc(long number){
+        if(number == 0){
+            return 1;
+        }else{
+            return number * calc(number-1);
+        }
+    }
+}
\ No newline at end of file
diff --git a/JumlahTanggal.java b/JumlahTanggal.java
new file mode 100644
index 0000000..2e1ede3
--- /dev/null
+++ b/JumlahTanggal.java
@@ -0,0 +1,40 @@
+public class JumlahTanggal{
+    public static void main(String[] args){
+        if(args.length != 2){
+            System.out.println("Usage: java JumlahTanggal <month:number> <year:number>");
+            return;
+        }
+
+        int month =  Integer.parseInt(args[0]);
+        int year = Integer.parseInt(args[1]);
+
+        switch(month){
+            case 1:
+            case 3:
+            case 5:
+            case 7:
+            case 8:
+            case 10:
+            case 12:
+                System.out.println(31);
+                break;
+            case 4:
+            case 6:
+            case 9:
+            case 11:
+                System.out.println(30);
+                break;
+            case 2:
+                // Cek kabisat
+                if(year % 4 == 0 && (year % 400 == 0 || year % 100 != 0)){
+                    System.out.println(29);
+                }else{
+                    System.out.println(28);
+                }
+                break;
+            default:
+                System.out.println("Format bilangan salah");
+                break;
+        }
+    }
+}
\ No newline at end of file
diff --git a/NamaBulan.java b/NamaBulan.java
new file mode 100644
index 0000000..d675c72
--- /dev/null
+++ b/NamaBulan.java
@@ -0,0 +1,53 @@
+public class NamaBulan{
+    public static void main(String[] args){
+        if(args.length != 1){
+            System.out.println("Usage: java NamaBulan <month:number>");
+            return;
+        }
+
+        int month =  Integer.parseInt(args[0]);
+
+        // Nama bulan menggunakan switch
+        switch(month){
+            case 1:
+                System.out.println("Januari");
+                break;
+            case 2:
+                System.out.println("Februari");
+                break;
+            case 3:
+                System.out.println("Maret");
+                break;
+            case 4:
+                System.out.println("April");
+                break;
+            case 5:
+                System.out.println("Mei");
+                break;
+            case 6:
+                System.out.println("Juni");
+                break;
+            case 7:
+                System.out.println("Juli");
+                break;
+            case 8:
+                System.out.println("Agustus");
+                break;
+            case 9:
+                System.out.println("September");
+                break;
+            case 10:
+                System.out.println("Oktober");
+                break;
+            case 11:
+                System.out.println("November");
+                break;
+            case 12:
+                System.out.println("Desember");
+                break;
+            default:
+                System.out.println("Format bilangan salah");
+                break;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Score.java b/Score.java
new file mode 100644
index 0000000..5ea33e1
--- /dev/null
+++ b/Score.java
@@ -0,0 +1,22 @@
+public class Score{
+    public static void main(String[] args){
+        if(args.length != 1){
+            System.out.println("Usage: java Score <score>");
+            return;
+        }
+        
+        int score = Integer.parseInt(args[0]);
+
+        if(score <= 20){
+            System.out.println("E");
+        }else if(score > 20 && score <= 40){
+            System.out.println("D");
+        }else if(score > 40 && score <= 60){
+            System.out.println("C");
+        }else if(score > 60 && score <= 80){
+            System.out.println("B");
+        }else{
+            System.out.println("A");
+        }
+    }
+}
\ No newline at end of file
diff --git a/Sort.java b/Sort.java
new file mode 100644
index 0000000..fbc8fba
--- /dev/null
+++ b/Sort.java
@@ -0,0 +1,36 @@
+public class Sort{
+    public static void main(String[] args){
+        if(args.length == 0){
+            System.out.println("Usage: java Sort <array of int>");
+        }
+
+        int[] numbers = new int[args.length];
+
+        for(int i=0; i<args.length; i++){
+            numbers[i] =  Integer.parseInt(args[i]);
+        }
+
+        Sort sort = new Sort();
+
+        sort.bubble(numbers);
+
+        for(int number : numbers){
+            System.out.print(number + " ");
+        }
+    }
+
+    public void bubble(int arr[]){
+        int n = arr.length;
+        for (int i = 0; i < n-1; i++){
+            for (int j = 0; j < n-i-1; j++){
+                if (arr[j] > arr[j+1]){
+                    // swap
+                    int temp = arr[j];
+                    arr[j] = arr[j+1];
+                    arr[j+1] = temp;
+                }
+            }
+        }
+            
+    }
+}
\ No newline at end of file