diff --git a/BubbleSortAsc.java b/BubbleSortAsc.java
new file mode 100644
index 0000000..822d85a
--- /dev/null
+++ b/BubbleSortAsc.java
@@ -0,0 +1,27 @@
+import java.util.Arrays;
+
+public class BubbleSortAsc{
+	public static void main(String[] args) {
+		int[] angka = new int[args.length];
+
+		for(int i=0;i<args.length;i++){
+			angka[i] = Integer.parseInt(args[i]);
+		}
+		for(int i=0;i<args.length;i++) {
+			for(int j=0;j<args.length-1;j++) { 
+				if(angka[j] > angka[j+1]){
+					//swap 2 variabel
+					angka[j] = angka[j]+angka[j+1];
+					angka[j+1] = angka[j]-angka[j+1];
+					angka[j] = angka[j]-angka[j+1];
+					
+					//swap 3 variabel
+					/* int temp = angka[j];
+					angka[j] = angka[j+1];
+					angka[j+1] = temp;*/
+				}
+			}
+		}
+		System.out.println("Hasil : "+Arrays.toString(angka));
+	}
+}
\ No newline at end of file
diff --git a/Days.java b/Days.java
new file mode 100644
index 0000000..68d7ca7
--- /dev/null
+++ b/Days.java
@@ -0,0 +1,68 @@
+public class Days{
+	public static void main(String[] args) {
+		int bln = Integer.parseInt(System.console().readLine());
+		int thn = Integer.parseInt(System.console().readLine());
+		switch(thn%400){
+			case 0: {
+				switch(bln){
+					case 2: System.out.println("29 hari"); break;
+					case 1: 
+					case 3:
+					case 5:
+					case 7:
+					case 8:
+					case 10:
+					case 12: System.out.println("31 hari"); break;
+					default: System.out.println("30 hari"); break;
+				}
+			} break;
+			default: {
+				switch(thn%100){
+					case 0: {
+						switch(bln){
+							case 2: System.out.println("28 hari"); break;
+							case 1: 
+							case 3:
+							case 5:
+							case 7:
+							case 8:
+							case 10:
+							case 12: System.out.println("31 hari"); break;
+							default: System.out.println("30 hari"); break;
+						}
+					} break;
+					default: {
+						switch(thn%4){
+							case 0: {
+								switch(bln){
+									case 2: System.out.println("29 hari"); break;
+									case 1: 
+									case 3:
+									case 5:
+									case 7:
+									case 8:
+									case 10:
+									case 12: System.out.println("31 hari"); break;
+									default: System.out.println("30 hari"); break;
+								}
+							} break;
+							default : {
+								switch(bln){
+									case 2: System.out.println("28 hari"); break;
+									case 1: 
+									case 3:
+									case 5:
+									case 7:
+									case 8:
+									case 10:
+									case 12: System.out.println("31 hari"); break;
+									default: System.out.println("30 hari"); break;
+								}
+							}break;
+						}
+					} break;
+				}
+			} break;
+		}
+	}
+}
\ No newline at end of file
diff --git a/Faktorial.java b/Faktorial.java
new file mode 100644
index 0000000..5e756e3
--- /dev/null
+++ b/Faktorial.java
@@ -0,0 +1,10 @@
+public class Faktorial{
+	public static void main(String[] args) {
+		int input = Integer.parseInt(args[0]);
+		int cpy = input;
+		for (int i=1;i<cpy;i++){
+			input = input*i;
+		}
+		System.out.println(input);
+	}
+}
\ No newline at end of file
diff --git a/FaktorialRksf.java b/FaktorialRksf.java
new file mode 100644
index 0000000..6c57859
--- /dev/null
+++ b/FaktorialRksf.java
@@ -0,0 +1,13 @@
+public class FaktorialRksf{
+	public static void main(String[] args) {
+		int input = Integer.parseInt(args[0]);
+		System.out.println(factorial(input));
+	}
+	public static int factorial(int n){
+		if(n==1)
+			return 1;
+		else{
+			return n*factorial(n-1);
+		}	
+	}
+}
\ No newline at end of file
diff --git a/HelloWorld.java b/HelloWorld.java
new file mode 100644
index 0000000..d231943
--- /dev/null
+++ b/HelloWorld.java
@@ -0,0 +1,24 @@
+public class HelloWorld{
+	public static void main(String[] args) {
+		int input = Integer.parseInt(args[0]);
+		// int input = Integer.parseInt(System.console().readLine());
+		if(input>=1&&input<=20){
+			System.out.println("Nilai E");
+		}
+		else if(input>=21&&input<=40){
+			System.out.println("Nilai D");
+		}
+		else if(input>=41&&input<=60){
+			System.out.println("Nilai C");
+		}
+		else if(input>=61&&input<=80){
+			System.out.println("Nilai B");
+		}
+		else if(input>=81&&input<=10){
+			System.out.println("Nilai A");
+		}
+		else{
+			System.out.println("Input angka 1-100");
+		}
+	}
+}
\ No newline at end of file
diff --git a/Months.java b/Months.java
new file mode 100644
index 0000000..8bec2bc
--- /dev/null
+++ b/Months.java
@@ -0,0 +1,21 @@
+public class Months{
+	public static void main(String[] args) {
+		int input = Integer.parseInt(args[0]);
+		// int input = Integer.parseInt(System.console().readLine());
+		switch(input){
+			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("Input 1-12!"); break;
+		}
+	}
+}
\ No newline at end of file