diff --git a/Array01.class b/Array01.class
new file mode 100644
index 0000000..a734fa8
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diff --git a/Array01.java b/Array01.java
new file mode 100644
index 0000000..0f65096
--- /dev/null
+++ b/Array01.java
@@ -0,0 +1,25 @@
+import java.util.Scanner;
+public class Array01{
+	public static void main(String [] args){
+		Scanner sc = new Scanner(System.in);
+		
+		int i, num ;
+		System.out.print("Enter Length of Array: ");
+		num = sc.nextInt();
+		
+		int [] arr = new int[num];
+		System.out.println("Enter " + num + " Elements: ");
+		for (i = 0; i <num;i++){
+			arr[i] = sc.nextInt();
+		}
+		System.out.println("Elements in Array");
+		for(i = 0; i<num; i++){
+			System.out.print(arr[i] + "\t");
+		}
+		int sum = 0;
+		for(i = 0; i<num; i++){
+			sum += arr[i];
+		}
+		System.out.println("\r\rSum is: " + sum);
+	}
+}
\ No newline at end of file
diff --git a/Array02.class b/Array02.class
new file mode 100644
index 0000000..cc3aa57
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diff --git a/Array02.java b/Array02.java
new file mode 100644
index 0000000..902195c
--- /dev/null
+++ b/Array02.java
@@ -0,0 +1,26 @@
+import java.util.Arrays;
+import java.util.Scanner;
+import java.util.Collections;
+public class Array02{
+	public static void main(String [] args){
+		Scanner sc = new Scanner(System.in);
+		
+		int i, num;
+		System.out.print("Enter length of array: ");
+		num = sc.nextInt();
+		
+		int[] arr1 = new int[num];
+		int[] arr2 = new int[num];
+		System.out.println("Enter " + num + " elements: ");
+		for (i = 0; i < num; i++){
+			arr1[i] = sc.nextInt();
+		}
+		
+		Arrays.sort(arr1);
+		System.out.println("\rElements of array2 are: " + Arrays.toString(arr1));
+		
+		Collections.reverse (Arrays.asList(arr1));
+		System.out.println("\rElements of array2 are: " + Arrays.toString(arr1));
+
+	}
+}
\ No newline at end of file
diff --git a/Array03.class b/Array03.class
new file mode 100644
index 0000000..81ba139
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diff --git a/Array03.java b/Array03.java
new file mode 100644
index 0000000..3c6dd8b
--- /dev/null
+++ b/Array03.java
@@ -0,0 +1,24 @@
+import java.util.Arrays;
+import java.util.Scanner;
+public class Array03{
+	public static void main(String [] args){
+		Scanner sc = new Scanner(System.in);
+		int i, num;
+		System.out.print("Enter length of array: ");
+		num = sc.nextInt();
+		
+		int[] arr = new int[num];
+		System.out.println("Enter " + num + " elements: ");
+		for(i = 0; i<num; i++){
+			arr[i] = sc.nextInt();
+		}
+		Arrays.sort(arr);
+		System.out.print(Arrays.toString(arr));
+		
+		int sum = 0;
+		for(i = 0; i < num; i++){
+			sum += arr[i];
+		}
+		System.out.println("Sum is: " + sum);
+	}
+}
\ No newline at end of file
diff --git a/Array1.class b/Array1.class
new file mode 100644
index 0000000..bbfd63e
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diff --git a/Array1.java b/Array1.java
new file mode 100644
index 0000000..9103fd4
--- /dev/null
+++ b/Array1.java
@@ -0,0 +1,8 @@
+public class Array1{
+	public static void main(String [] args){
+		double prices[] = {12.43,13.42,13.23,15.00,25.00};
+		for (int i=0; i < prices.length; i++){
+			System.out.println(prices[i]);
+		}
+	}
+}
\ No newline at end of file
diff --git a/Binary1.class b/Binary1.class
new file mode 100644
index 0000000..a41fcf7
Binary files /dev/null and b/Binary1.class differ
diff --git a/Binary1.java b/Binary1.java
new file mode 100644
index 0000000..e9d8811
--- /dev/null
+++ b/Binary1.java
@@ -0,0 +1,12 @@
+import java.util.Scanner;
+public class Binary1{
+	public static void main(String args []){
+		int n;
+		Scanner sc = new Scanner(System.in);
+		
+		System.out.print("Enter any number: ");
+		n = sc.nextInt();
+		System.out.println("Binary number: " + Integer.toBinaryString(n));
+			
+	}
+}
\ No newline at end of file
diff --git a/Conditions1.class b/Conditions1.class
new file mode 100644
index 0000000..7774314
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diff --git a/Conditions1.java b/Conditions1.java
new file mode 100644
index 0000000..a9ffbc2
--- /dev/null
+++ b/Conditions1.java
@@ -0,0 +1,32 @@
+/* 
+ *Scanner dahil static na program
+ *or with user input.
+ *Reminders:
+ *This may or may totally not be
+ *included sa activity tomorrow
+ *Thank you <3
+*/
+
+import java.util.Scanner;
+public class Conditions1 {
+	public static void main (String [] args){
+		Scanner sc = new Scanner(System.in);
+		double no; //no is number
+		
+		System.out.print("Input your grade: ");
+		no = sc.nextDouble();
+		
+		if (no >= 90){
+			System.out.print("A");
+		} else if (no >= 80){
+			System.out.print("B");
+		} else if (no >= 75){
+			System.out.print("C");
+		} else if (no < 50 || no > 100){
+			System.out.print("Input Error");
+		} else {
+			System.out.print("F");
+		}
+		
+	}
+}
\ No newline at end of file
diff --git a/Conversion.java b/Conversion.java
new file mode 100644
index 0000000..a1f4216
--- /dev/null
+++ b/Conversion.java
@@ -0,0 +1,18 @@
+/**
+ * Data Type Conversion
+ */
+public class Conversion {
+    public static void main(String[] args) {
+
+        //variable x is float data type
+        float x = 2.89f;
+        //variable y is an integer data type 
+        int y = (int) x;
+        //float x will be convert to integer
+        System.out.println("Float to Int: " + y);
+        //displays y into integer
+        //output should be 2
+        
+    }
+    
+}
\ No newline at end of file
diff --git a/Conversion1.class b/Conversion1.class
new file mode 100644
index 0000000..79ec8cb
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diff --git a/Conversion1.java b/Conversion1.java
new file mode 100644
index 0000000..03f723e
--- /dev/null
+++ b/Conversion1.java
@@ -0,0 +1,13 @@
+public class Conversion1 {
+	public static void main (String[] args){
+		final int grade = 80;
+		final int size = 20;
+		double final_grade = (double) grade;
+		double final_size = (double) size;
+		
+		//Displays final size and final grade variables
+		System.out.println(final_grade);
+		System.out.println(final_size);
+
+	}
+}
\ No newline at end of file
diff --git a/Conversion2.class b/Conversion2.class
new file mode 100644
index 0000000..ca8fbf6
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diff --git a/Conversion2.java b/Conversion2.java
new file mode 100644
index 0000000..361f44a
--- /dev/null
+++ b/Conversion2.java
@@ -0,0 +1,11 @@
+public class Conversion2 {
+	public static void main (String[]main) {
+		String str = "1050";
+		
+		int inum = Integer.parseInt(str);
+		System.out.println(inum);
+		
+		int onum = Integer.valueOf(str);
+		System.out.println(onum);
+	}
+}
\ No newline at end of file
diff --git a/DoWhile1.class b/DoWhile1.class
new file mode 100644
index 0000000..3358923
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diff --git a/Exception01.class b/Exception01.class
new file mode 100644
index 0000000..470be6a
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diff --git a/Exception01.java b/Exception01.java
new file mode 100644
index 0000000..d22dabd
--- /dev/null
+++ b/Exception01.java
@@ -0,0 +1,30 @@
+import java.util.*;
+public class Exception01{
+	public static void main(String [] args){
+		Exception01 ex = new Exception01();
+		ex.input();
+	}
+	public void input(){
+		Scanner sc = new Scanner(System.in);
+		int dividend, divisor, quotient;
+		System.out.print("Enter dividend: ");
+		dividend = sc.nextInt();
+		System.out.print("Enter divisor: ");
+		divisor = sc.nextInt();
+		try{
+			quotient = dividend / divisor;
+			System.out.print(dividend + " / " + divisor + " = " + quotient);
+		}
+		catch(ArithmeticException e){
+			System.out.println("Divisor cannot be 0");
+			System.out.println("Try again.");
+		}
+		catch(InputMismatchException e){
+			System.out.print("Wrong data type!");
+			System.out.println("Try again.");
+		}
+		finally{
+			System.out.println("\rThank you!");
+		}
+	}
+}
\ No newline at end of file
diff --git a/ForLoop1.class b/ForLoop1.class
new file mode 100644
index 0000000..f4c7cef
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diff --git a/ForLoop1.java b/ForLoop1.java
new file mode 100644
index 0000000..1db1890
--- /dev/null
+++ b/ForLoop1.java
@@ -0,0 +1,15 @@
+import java.util.Scanner;
+public class ForLoop1 {
+	public static void main (String [] args){
+		
+	    Scanner sc = new Scanner(System.in);
+	   	int num;
+	   	
+	   	System.out.print("Enter a positive number: ");
+	   	num = sc.nextInt();
+	   	
+	   	for (int i = 1; i<=10; i++){
+	   		System.out.println(num + " x " + i + " = " + (num*i) );
+	   	}
+	}
+}
\ No newline at end of file
diff --git a/ForLoop2.class b/ForLoop2.class
new file mode 100644
index 0000000..e01cc68
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diff --git a/ForLoop2.java b/ForLoop2.java
new file mode 100644
index 0000000..100c272
--- /dev/null
+++ b/ForLoop2.java
@@ -0,0 +1,20 @@
+import java.util.Scanner;
+public class ForLoop2 {
+	public static void main(String [] args){
+		int base, power;
+		int result = 1;
+		
+		Scanner sc = new Scanner(System.in);
+		
+		System.out.print("Enter the base number: ");
+		base = sc.nextInt();
+		
+		System.out.print("Enter the power number: ");
+		power = sc.nextInt();
+		
+		for(int i = 1; i<= power; i++){
+			result *= base;
+		}
+		System.out.println("Result: " + result);
+	}
+}
\ No newline at end of file
diff --git a/Hello.java b/Hello.java
new file mode 100644
index 0000000..581e2f7
--- /dev/null
+++ b/Hello.java
@@ -0,0 +1,12 @@
+/**
+ * Hello
+ */
+public class Hello {
+    //main method
+    public static void main(String[] args) {
+        //Variable x is a string
+        String x = "Hello Arvin";
+        //Says Hello Arvin
+        System.out.println(x);
+    }
+}
\ No newline at end of file
diff --git a/Measurements.class b/Measurements.class
new file mode 100644
index 0000000..5afe2be
Binary files /dev/null and b/Measurements.class differ
diff --git a/Measurements.java b/Measurements.java
new file mode 100644
index 0000000..eafa70c
--- /dev/null
+++ b/Measurements.java
@@ -0,0 +1,37 @@
+import java.util.Scanner;
+public class Measurements{
+	public static void main(String [] args){
+		Scanner sc = new Scanner(System.in);
+		double num;
+		double cm = 0;
+		String measurement = "";
+		String converter = "";
+		
+		System.out.println("Available measurements are: millimeter (mm), centimeter (cm)");
+		System.out.print("Enter a measurement: ");
+		measurement = measurement.toLowerCase();
+		measurement = sc.nextLine();
+		
+		System.out.print("Enter a number: ");
+		num = sc.nextDouble();
+		
+		if(measurement.equals("mm")|| measurement.equals("millimeter")){
+			
+			System.out.println("Available conversion to: centimeter (cm)");
+			System.out.print("Convert number to: ");
+			converter = converter.toLowerCase();
+			converter = sc.nextLine();
+			
+			if(converter.equals("cm")||converter.equals("centimeter")){
+				cm = num / cm;
+				System.out.println("Length in centimeter is: " + cm);
+			} else{
+				System.out.println("Error, converter not found.");
+			}
+		} else if(measurement.equals("cm")|| measurement.equals("centimeter")){
+			System.out.println("test");
+		} else {
+			System.out.print("Error");
+		}
+	}
+}
\ No newline at end of file
diff --git a/MyLoopTest.class b/MyLoopTest.class
new file mode 100644
index 0000000..9a7b59b
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diff --git a/MyLoopTest.java b/MyLoopTest.java
new file mode 100644
index 0000000..045027d
--- /dev/null
+++ b/MyLoopTest.java
@@ -0,0 +1,11 @@
+import java.util.Scanner;
+public class MyLoopTest {
+	public static void main(String [] args){
+		int sum = 0;
+		for(int a=0; a<=100; a+=2){
+			System.out.println(a);
+			//sum += a;
+		}
+		//System.out.print(sum);
+	}
+}
\ No newline at end of file
diff --git a/Recursion07.java b/Recursion07.java
new file mode 100644
index 0000000..292f35b
--- /dev/null
+++ b/Recursion07.java
@@ -0,0 +1,37 @@
+import java.util.Scanner;
+class Recursion07{
+	public static void reverse(int arr[], int start, int end){
+		if(start >= end)
+			return;
+		int temp;
+		temp = arr[start];
+		arr[start] = arr[end];
+		arr[end] = temp;
+		
+		reverse(arr, start+1, end-1);
+	}
+	
+	public static void main(String args[]){
+		Scanner sc = new Scanner(System.in);
+		
+		System.out.println("Enter Row Array Elements: ");
+		int n = sc.nextInt();
+		
+		System.out.println("Enter Array Elements: ");
+		int arr[] = new int[n];
+		for(int i = 0; i<n; i++){
+			arr[i]=sc.nextInt();
+		}
+		System.out.println("Array Elements: ");
+		for(int i = 0; i<n; i++){
+			System.out.println(arr[i]);
+		}
+
+		System.out.println("Reversed Array Elements: ");
+		reverse(arr, 0, n-1);
+		for(int i = 0; i<n; i++){
+			System.out.println(arr[i]);
+		}
+		
+	}
+}
\ No newline at end of file
diff --git a/SampDoWhile.class b/SampDoWhile.class
new file mode 100644
index 0000000..4145c73
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diff --git a/SampDoWhile.java b/SampDoWhile.java
new file mode 100644
index 0000000..a69a438
--- /dev/null
+++ b/SampDoWhile.java
@@ -0,0 +1,12 @@
+public class SampDoWhile{
+	public static void main(String [] args){
+		int i = 0;
+		do{
+			if (i==0){
+				System.out.print("Done");
+			} else{
+				System.out.print("Oops");
+			}
+		} while(true);
+	}
+}
diff --git a/Scanner1.class b/Scanner1.class
new file mode 100644
index 0000000..68de66c
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diff --git a/Scanner1.java b/Scanner1.java
new file mode 100644
index 0000000..c8fb545
--- /dev/null
+++ b/Scanner1.java
@@ -0,0 +1,39 @@
+/*
+ Sample program that displays
+ String, Int, Double
+ */
+
+//import scanner package
+
+import java.util.Scanner;
+
+public class Scanner1 {
+	public static void main(String [] args){
+		//declare a variable for Scanner
+		Scanner sc = new Scanner(System.in);
+		
+		//String input. Sample is first name
+		String name;
+		System.out.print("Enter your First Name: ");
+		name = sc.next();
+		
+		//Integer input. Sample is age
+		int age;
+		System.out.print("Enter you Age: ");
+		age = sc.nextInt(); //sc.nextInt() for Integer input
+		
+		//Double input. Sample is your grade
+		double grade;
+		System.out.print("Enter your Grade: ");
+		grade = sc.nextDouble(); //sc.nextDouble() for decimal input
+		
+		//Space 
+		System.out.println("");
+		//String output or name
+		System.out.println("Name: " + name);
+		//Integer output or age
+		System.out.println("Age: " + age);
+		//Double output or grade
+		System.out.println("Grade: " + grade);
+	}
+}
\ No newline at end of file
diff --git a/SortRecursion1.class b/SortRecursion1.class
new file mode 100644
index 0000000..9042361
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diff --git a/SortRecursion1.java b/SortRecursion1.java
new file mode 100644
index 0000000..4e9e9ce
--- /dev/null
+++ b/SortRecursion1.java
@@ -0,0 +1,30 @@
+class SortRecursion1{
+	/* Function to reverse arr[] from start to end*/
+    static void rvereseArray(int arr[], int start, int end) 
+    { 
+        int temp; 
+        if (start >= end) 
+            return; 
+        temp = arr[start]; 
+        arr[start] = arr[end]; 
+        arr[end] = temp; 
+        rvereseArray(arr, start+1, end-1); 
+    } 
+  
+    /* Utility that prints out an array on a line */
+    static void printArray(int arr[], int size) 
+    { 
+        for (int i=0; i < size; i++) 
+            System.out.print(arr[i] + " "); 
+        System.out.println(""); 
+    } 
+  
+    /*Driver function to check for above functions*/
+    public static void main (String[] args) { 
+        int arr[] = {7,10,55,100,49,60};
+        printArray(arr, 6); 
+        rvereseArray(arr, 0, 5); 
+        System.out.println("Reversed array is "); 
+        printArray(arr, 6); 
+    } 
+}
\ No newline at end of file
diff --git a/StringArray.class b/StringArray.class
new file mode 100644
index 0000000..2ab239a
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diff --git a/StringArray1.class b/StringArray1.class
new file mode 100644
index 0000000..497ba0e
Binary files /dev/null and b/StringArray1.class differ
diff --git a/StringArray1.java b/StringArray1.java
new file mode 100644
index 0000000..a68a607
--- /dev/null
+++ b/StringArray1.java
@@ -0,0 +1,20 @@
+import java.util.Arrays;
+import java.util.Scanner;
+public class StringArray1{
+	public static void main(String[] args){
+		Scanner sc = new Scanner(System.in)AA;
+		
+		String [] names = new String[5];
+		System.out.println("Enter 5 Names:");
+		for(int i = 0; i<names.length;i++){
+			names[i] = sc.nextLine();
+		}
+		
+		Arrays.sort(names);
+		System.out.println("Names");
+		for(String name: names){
+			System.out.println(name);
+		}
+		
+	}
+}
\ No newline at end of file
diff --git a/StringArray2.class b/StringArray2.class
new file mode 100644
index 0000000..9b8e6bf
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diff --git a/StringArray2.java b/StringArray2.java
new file mode 100644
index 0000000..9796cb1
--- /dev/null
+++ b/StringArray2.java
@@ -0,0 +1,23 @@
+import java.util.Collections;
+import java.util.Scanner;
+import java.util.Arrays;
+
+class StringArray2{
+	public static void main(String[] args){
+		Scanner sc = new Scanner(System.in);
+		int row, i;
+		
+		System.out.print("Enter a positive number: ");
+		row = sc.nextInt();
+		
+		System.out.print("Enter " + row +" names: ");
+		String[] names = new String[row];
+		for(i=0; i<names.length; i++){
+			names[i] = sc.nextLine();
+		}
+		Arrays.sort(names);
+		for(String name: names){
+			System.out.print(name+"\r");
+		}
+	}
+}
\ No newline at end of file
diff --git a/StringArray3.class b/StringArray3.class
new file mode 100644
index 0000000..2535650
Binary files /dev/null and b/StringArray3.class differ
diff --git a/StringArray3.java b/StringArray3.java
new file mode 100644
index 0000000..814268d
--- /dev/null
+++ b/StringArray3.java
@@ -0,0 +1,23 @@
+import java.util.Arrays;
+import java.util.Scanner;
+import java.util.Collections;
+
+class StringArray3{
+	public static void main(String [] args){
+		Scanner sc = new Scanner(System.in);
+		int row, i;
+		
+		System.out.print("Enter a positive number: ");
+		row = sc.nextInt();
+		
+		System.out.print("Enter " + row +" names: ");
+		String[] names = new String[row];
+		for(i=0; i<names.length; i++){
+			names[i] = sc.nextLine();
+		}
+		Arrays.sort(names);
+		for(String name: names){
+			System.out.print(name+"\r");
+		}
+	}
+}
\ No newline at end of file