diff --git a/Bubble.class b/Bubble.class
new file mode 100644
index 0000000..763a610
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diff --git a/Bubble.java b/Bubble.java
new file mode 100644
index 0000000..d79504e
--- /dev/null
+++ b/Bubble.java
@@ -0,0 +1,23 @@
+public class Bubble{
+	public static void main(String[] args){
+		int n=args.length;
+		int[] array;
+		array=new int[n];
+		for(int i=0;i<n;i++){
+			array[i]=Integer.parseInt(args[i]);
+		}
+		for(int i=0;i<n-1;i++){
+			for(int j=0;j<n-i-1;j++){
+				if(array[j]>array[j+1]){
+					int temp=array[j];
+					array[j]=array[j+1];
+					array[j+1]=temp;
+				}
+			}
+		}
+		for(int i=0;i<n;i++){
+			System.out.print(array[i]+" ");
+		}
+		System.out.println("");
+	}
+}
\ No newline at end of file
diff --git a/Calendar.class b/Calendar.class
new file mode 100644
index 0000000..2d6b6f5
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diff --git a/Calendar.java b/Calendar.java
new file mode 100644
index 0000000..e433d4a
--- /dev/null
+++ b/Calendar.java
@@ -0,0 +1,20 @@
+public class Calendar{
+	public static void main(String[] args){
+		int month= Integer.parseInt(args[0]);
+		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("Out of box!");
+		}
+	}
+}
\ No newline at end of file
diff --git a/CalendarDay.class b/CalendarDay.class
new file mode 100644
index 0000000..d54dd38
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diff --git a/CalendarDay.java b/CalendarDay.java
new file mode 100644
index 0000000..7f73015
--- /dev/null
+++ b/CalendarDay.java
@@ -0,0 +1,21 @@
+public class CalendarDay{
+	public static void main(String[] args){
+		int year=Integer.parseInt(args[0]);
+		int month=Integer.parseInt(args[1]);
+		switch(month){
+			case 1: System.out.println("31"); break;
+			case 2: if(year%4==0) System.out.println("29"); 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("Out of box!");
+		}
+	}
+}
\ No newline at end of file
diff --git a/FacRecursive.class b/FacRecursive.class
new file mode 100644
index 0000000..c6fa896
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diff --git a/FacRecursive.java b/FacRecursive.java
new file mode 100644
index 0000000..42f5e94
--- /dev/null
+++ b/FacRecursive.java
@@ -0,0 +1,10 @@
+public class FacRecursive{
+	public static void main(String[] args){
+		int number=Integer.parseInt(args[0]);
+		System.out.println(Recursive(number));
+	}
+	public static int Recursive(int n){		
+		if(n>1) return n*(Recursive(n-1));		
+		else return n;
+	}
+}
\ No newline at end of file
diff --git a/Factorial.class b/Factorial.class
new file mode 100644
index 0000000..46cd1a7
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diff --git a/Factorial.java b/Factorial.java
new file mode 100644
index 0000000..c6e7f3f
--- /dev/null
+++ b/Factorial.java
@@ -0,0 +1,14 @@
+public class Factorial{
+	public static void main(String[] args){
+		int number=Integer.parseInt(args[0]);
+		int result=1;
+		for(int i=2;i<=number;i++){
+			if(number==0){
+				result=0;
+				break;
+			}
+			result*=i;
+		}
+		System.out.println(result);
+	}
+}
\ No newline at end of file
diff --git a/HelloWorld.class b/HelloWorld.class
new file mode 100644
index 0000000..6237280
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diff --git a/HelloWorld.java b/HelloWorld.java
new file mode 100644
index 0000000..4d74623
--- /dev/null
+++ b/HelloWorld.java
@@ -0,0 +1,20 @@
+public class HelloWorld{
+	public static void main(String[] args){
+		int score= Integer.parseInt(args[0]);
+		if(score>80){
+			System.out.println("A");
+		}
+		else if(score>70){
+			System.out.println("B");
+		}
+		else if(score>60){
+			System.out.println("C");
+		}
+		else if(score>50){
+			System.out.println("D");
+		}
+		else{
+			System.out.println("E");
+		}
+	}
+}
\ No newline at end of file