diff --git a/BubbleSort.java b/BubbleSort.java
new file mode 100644
index 0000000..b854220
--- /dev/null
+++ b/BubbleSort.java
@@ -0,0 +1,28 @@
+public class BubbleSort {
+    public static void main(String[] args) {
+        int[] numbers = new int[args.length];
+
+        for(int a = 0; a < args.length; a++) {
+            numbers[a] = Integer.parseInt(args[a]);
+        }
+
+        bubbleSort(numbers);
+        for (int number : numbers) {
+            System.out.print(number + " ");
+        }
+    }
+
+    public static void bubbleSort(int arr[]) {
+        int n = arr.length;
+        int i,j;
+        for (i = 0; i < n-1; i++) {         
+            for (j = 0; j < n-i-1; j++) {
+                if (arr[j] > arr[j+1]) {
+                    int temp = arr[j];
+                    arr[j] = arr[j+1];
+                    arr[j+1] = temp;
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/Bulan.java b/Bulan.java
new file mode 100644
index 0000000..21fb852
--- /dev/null
+++ b/Bulan.java
@@ -0,0 +1,46 @@
+public class Bulan {
+    public static void main(String[] args) {
+        int bulan = Integer.parseInt(args[0]);
+        switch (bulan) {
+            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("Bulan Invalid");
+                break;
+        }
+    }
+}
\ No newline at end of file
diff --git a/BulanTahun.java b/BulanTahun.java
new file mode 100644
index 0000000..a239ff0
--- /dev/null
+++ b/BulanTahun.java
@@ -0,0 +1,54 @@
+public class BulanTahun {
+    public static void main(String[] args) {
+        int bulan = Integer.parseInt(args[0]);
+        int tahun = Integer.parseInt(args[1]);
+
+        switch (bulan) {
+            case 1 :
+                System.out.println(31);
+                break;
+            case 2 :
+                if (tahun % 4 == 0 && (tahun % 400 == 0 || tahun % 100 != 0)) {
+                    System.out.println(29);
+                    break;
+                }
+                else {
+                    System.out.println(28);
+                    break;
+                }
+            case 3 :
+                System.out.println(31);
+                break;
+            case 4 :
+                System.out.println(30);
+                break;
+            case 5 :
+                System.out.println(31);
+                break;
+            case 6 :
+                System.out.println(30);
+                break;
+            case 7 :
+                System.out.println(31);
+                break;
+            case 8 :
+                System.out.println(31);
+                break;
+            case 9 :
+                System.out.println(30);
+                break;
+            case 10 :
+                System.out.println(31);
+                break;
+            case 11 :
+                System.out.println(30);
+                break;
+            case 12 :
+                System.out.println(31);
+                break;
+            default :
+                System.out.println("Bulan Invalid");
+                break;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Faktorial.java b/Faktorial.java
new file mode 100644
index 0000000..01de024
--- /dev/null
+++ b/Faktorial.java
@@ -0,0 +1,18 @@
+public class Faktorial {
+    public static void main(String[] args) {
+
+        int nilai = Integer.parseInt(args[0]);
+
+        int jumlah = 1;
+
+        if (nilai == 0 && nilai == 1) {
+            System.out.println(1);
+        }
+        else {
+            for (int i = nilai; i > 0; i--) {
+                jumlah *= i;
+            }
+            System.out.println(jumlah);
+        }
+    }
+}
\ No newline at end of file
diff --git a/FungsiFaktorial.java b/FungsiFaktorial.java
new file mode 100644
index 0000000..9ea0c4d
--- /dev/null
+++ b/FungsiFaktorial.java
@@ -0,0 +1,18 @@
+public class FungsiFaktorial {
+    public static void main(String[] args) {
+
+        int nilai = Integer.parseInt(args[0]);
+        int hasil;
+        hasil = new FungsiFaktorial().faktorial(nilai);
+        System.out.println(hasil);
+    }
+
+    public int faktorial(int n) {
+        if (n == 0) {
+            return 1;
+        }
+        else {
+            return n * faktorial(n - 1);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Score.java b/Score.java
new file mode 100644
index 0000000..43e1b6b
--- /dev/null
+++ b/Score.java
@@ -0,0 +1,23 @@
+public class Score {
+    public static void main(String[] args) {
+        int score = Integer.parseInt(args[0]);
+        if(score > 80 && score <= 100) {
+            System.out.println("A");
+        }
+        else if(score > 60 && score <= 80) {
+            System.out.println("B");
+        }
+        else if(score > 40 && score <= 60) {
+            System.out.println("C");
+        }
+        else if(score > 20 && score <= 40) {
+            System.out.println("D");
+        }
+        else if(score >= 0 && score <= 20) {
+            System.out.println("E");
+        }
+        else {
+            System.out.println("Score invalid");
+        }
+    }
+}
\ No newline at end of file