diff --git a/BubbleSort.java b/BubbleSort.java
new file mode 100644
index 0000000..f02401a
--- /dev/null
+++ b/BubbleSort.java
@@ -0,0 +1,24 @@
+
+public class BubbleSort {
+
+	public static void main(String[] args) {
+		int panjang = args.length;
+		int[] arr = new int[panjang];
+		for(int i=0;i<panjang;i++) {
+			arr[i] = Integer.parseInt(args[i]);
+		}
+		for(int i=0;i<panjang;i++) {
+			for(int j=0;j<panjang-1;j++) {
+				if(arr[j]>arr[j+1]) {
+					int tamp = arr[j];
+					arr[j]=arr[j+1];
+					arr[j+1]=tamp;
+				}
+			}
+		}
+		for(int i=0;i<panjang;i++) {
+			System.out.print(arr[i]+ " ");
+		}
+	}
+
+}
diff --git a/Faktorial.java b/Faktorial.java
new file mode 100644
index 0000000..e7c9261
--- /dev/null
+++ b/Faktorial.java
@@ -0,0 +1,18 @@
+
+public class Faktorial {
+
+	public static void main(String[] args) {
+		int angka = Integer.parseInt(args[0]);	
+		if(args.length != 1) {
+			System.out.println("Input harus 1 angka");
+			return;
+		}
+		int hasil=angka;
+		for(int i=angka-1;i>1;i--) {
+			hasil*=i;
+		}
+		if(hasil==0) hasil=1;
+		System.out.println("Hasil faktorial dari " + angka + " adalah " + hasil);
+	}
+
+}
diff --git a/FaktorialRekursif.java b/FaktorialRekursif.java
new file mode 100644
index 0000000..685cda8
--- /dev/null
+++ b/FaktorialRekursif.java
@@ -0,0 +1,22 @@
+
+public class FaktorialRekursif {
+
+	public static void main(String[] args) {
+		int angka = Integer.parseInt(args[0]);	
+		if(args.length != 1) {
+			System.out.println("Input harus 1 angka");
+			return;
+		}
+		int hasil=angka;
+		hasil = new FaktorialRekursif().hitungFaktorial(hasil);
+		System.out.println("Hasil faktorial dari " + angka + " adalah " + hasil);
+
+	}
+	
+	public int hitungFaktorial(int hasil) {
+		if(hasil==0) return 1;
+		else
+			return hasil*hitungFaktorial(hasil-1);
+	}
+
+}
diff --git a/HelloWorld.java b/HelloWorld.java
new file mode 100644
index 0000000..dedb761
--- /dev/null
+++ b/HelloWorld.java
@@ -0,0 +1,27 @@
+
+public class HelloWorld {
+	public static void main(String[] args) {
+		int score = Integer.parseInt(args[0]);	
+		if(args.length != 1) {
+			System.out.println("Harus 1 angka");
+			return;
+		}
+		
+		if(score>80 && score<=100) {
+			System.out.println("A");
+		}
+		else if(score>60) {
+			System.out.println("B");
+		}
+		else if(score>40) {
+			System.out.println("C");
+		}
+		else if(score>20) {
+			System.out.println("D");
+		}
+		else if(score>0)
+			System.out.println("E");
+		else
+			System.out.println("input salah");
+	}
+}
diff --git a/Kalender.java b/Kalender.java
new file mode 100644
index 0000000..f4c00ca
--- /dev/null
+++ b/Kalender.java
@@ -0,0 +1,32 @@
+
+public class Kalender {
+
+	public static void main(String[] args) {
+		if(args.length != 1) {
+			System.out.println("Harus 1 angka");
+			return;
+		}
+		int month = Integer.parseInt(args[0]);
+		String name = "";
+		
+		switch(month) {
+			case 1 : name="Januari"; break;
+			case 2 : name="Februari"; break;
+			case 3 : name="Maret"; break;
+			case 4 : name="April"; break;
+			case 5 : name= "Mei"; break;
+			case 6 : name="Juni"; break;
+			case 7 : name="Juli"; break;
+			case 8 : name="Agustus"; break;
+			case 9 : name="September"; break;
+			case 10 : name="Oktober"; break;
+			case 11 : name="November"; break;
+			case 12 : name="Desember"; break;
+			default: name="Bulan hanya ada 1-12";
+		}
+		
+		System.out.println(name);
+
+	}
+
+}
diff --git a/TahunDanBulan.java b/TahunDanBulan.java
new file mode 100644
index 0000000..c491591
--- /dev/null
+++ b/TahunDanBulan.java
@@ -0,0 +1,41 @@
+
+public class TahunDanBulan {
+
+	public static void main(String[] args) {
+		if(args.length != 2) {
+			System.out.println("Input harus 2 angka");
+			System.out.println("Angka pertama adalah TAHUN");
+			System.out.println("Angka kedua adalah BULAN");
+			return;
+		}
+		int year = Integer.parseInt(args[0]);
+		int month = Integer.parseInt(args[1]);
+		int day = 0;
+		
+		switch(month) {
+			case 1 :
+			case 3 :
+			case 5 :
+			case 7 :
+			case 8 :
+			case 10 :
+			case 12 :
+				day=31; break;
+			case 4 :
+			case 6 :
+			case 9 :
+			case 11 : day=30; break;
+			case 2 :
+					day = ((year%4==0) && !(year%100==0) || (year%400==0)) ? 29 : 28;
+					break;
+			default: day=0; break;
+		}
+		if(day!=0) {
+			System.out.println("Jumlah hari di tahun "+ year + " bulan " + month +" adalah "+ day);
+		}
+		else {
+			System.out.println("Input salah");
+		}
+	}
+
+}