diff --git a/AddressBreak.java b/AddressBreak.java
new file mode 100644
index 0000000..d30fb69
--- /dev/null
+++ b/AddressBreak.java
@@ -0,0 +1,34 @@
+
+/**
+ * Write a description of class AddressBreak here.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+import java.util.Scanner;
+public class AddressBreak
+{
+   //Program that breaks a given full file name into path, filename and extension.
+    public static void main(String[] args) {
+		Scanner file=new Scanner(System.in);
+		String path;
+		boolean check=false;
+		do {
+			System.out.println("Please enter File path: ");
+			path=file.nextLine();
+			if (path.contains("\\") && path.contains(".")) {
+				int index=path.lastIndexOf("\\");
+				int ext=path.lastIndexOf(".");
+				String fileName=path.substring(index+1, ext);
+				String filePath=path.substring(0, index);
+				String fileExt=path.substring(ext+1);
+				System.out.println("\nFor the full name: "+path);
+				System.out.println("Directory: "+filePath+" \nFile name: "+fileName+" \nExtension: "+fileExt);
+				check=true;
+			}
+			else {
+				System.out.println("Invalid Path ");
+			}
+		}while(!check);
+    }
+}
diff --git a/ArithmeticProgression.java b/ArithmeticProgression.java
new file mode 100644
index 0000000..3d5c6b4
--- /dev/null
+++ b/ArithmeticProgression.java
@@ -0,0 +1,32 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+import java.util.Scanner;
+public class ArithmeticProgression
+{ 
+   public static void main(String [] args){
+       int a,d,n;
+       System.out.println("Assignment1\n");
+       Scanner input = new Scanner(System.in);
+       System.out.println("enter the first term of an arithmetic progression (AP)\n");
+       a = input.nextInt();
+
+       System.out.println("enter the common difference of an arithmetic progression (AP)\n");
+       d = input.nextInt();
+
+       System.out.println("enter the number of terms of an arithmetic progression (AP)\n");
+       n = input.nextInt();
+     do{
+       System.out.println(" invalid input, n cannot be less than 1,Please enter a valid input");
+       n = input.nextInt();
+    }
+         while(n<1) ;
+       double Tn= a+(n-1)*d;
+        double Sn = (n/2)*(a+Tn);
+        System.out.println("The nth term of the series is: "+Tn);
+        System.out.println(" The sum of the first n terms is: "+Sn);
+
+}
+}
diff --git a/Author.java b/Author.java
new file mode 100644
index 0000000..2797978
--- /dev/null
+++ b/Author.java
@@ -0,0 +1,30 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+public class Author {
+   private String name;
+   private String email;
+   private char gender;   
+   public Author(String name, String email, char gender) {
+      this.name = name;
+      this.email = email;
+      this.gender = gender;
+   }
+   public String getName() {
+      return name;
+   }
+   public char getGender() {
+      return gender;
+   }
+   public String getEmail() {
+      return email;
+   }
+   public void setEmail(String email) {
+      this.email = email;
+   }
+   public String toString() {
+      return name + " (" + gender + ") at " + email;
+   }
+}
diff --git a/BankAccount.java b/BankAccount.java
new file mode 100644
index 0000000..a317576
--- /dev/null
+++ b/BankAccount.java
@@ -0,0 +1,38 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+public class BankAccount
+{
+    // instance variables - replace the example below with your own
+    private int accountNumber;
+    private String customerName;
+    private double balance;
+
+    /**
+     * Constructor for objects of class BankAccount
+     */
+    public BankAccount(int acctNumber, String custName, double bal)
+    {
+        accountNumber=acctNumber;
+        customerName=custName;
+        balance=bal;
+    }
+
+    //method deposit
+    public void deposit(double deposit)
+    {
+        balance+=deposit;
+    }
+    //method withdraw
+    public double withdraw(double withdraw)
+    {
+        balance-=withdraw;
+        return balance;
+    }
+    public double getBalance()
+    {
+        return balance;
+    }
+}
diff --git a/BankAccountDemo.java b/BankAccountDemo.java
new file mode 100644
index 0000000..c628e25
--- /dev/null
+++ b/BankAccountDemo.java
@@ -0,0 +1,36 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+import java.util.Scanner;
+public class BankAccountDemo
+{
+    public static void main(String[] args){
+        Scanner bank= new Scanner(System.in);
+        int accountNumber;
+        double balance,withdraw,deposit;
+        String accountName;
+        
+        System.out.print("\nEnter Account Number: ");
+        accountNumber=bank.nextInt();
+        bank.nextLine();
+        System.out.print("Enter Customer name: ");
+        accountName=bank.nextLine();
+        System.out.print("Enter initial balance: ");
+        balance=bank.nextDouble();
+        bank.nextLine();
+        BankAccount account= new BankAccount(accountNumber,accountName,balance);
+       // BankAccount account= new BankAccount(accountNumber,accountName,balance);
+       
+       
+        System.out.print("\nEnter amount to deposit: ");
+        deposit=bank.nextDouble();
+        account.deposit(deposit);
+        System.out.print("New balance is: "+account.getBalance());
+        System.out.print("\n\nEnter amount to withdraw: ");
+        withdraw=bank.nextDouble();
+        account.withdraw(withdraw);
+        System.out.print("New balance is: "+account.getBalance());
+    }
+}
diff --git a/Box.java b/Box.java
new file mode 100644
index 0000000..2bd55ca
--- /dev/null
+++ b/Box.java
@@ -0,0 +1,19 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+public class Box {
+private double length , width , height; //instance variables
+public Box(double boxLength , double boxWidth , double boxHeight) { //constructor
+length = boxLength;
+width = boxWidth;
+height = boxHeight;
+}
+public double volume() { //instant methods
+return length * width * height;
+}
+public double surfaceArea() {
+return 2*(length*width + length*height + width*height);
+}
+}
diff --git a/BoxDemo.java b/BoxDemo.java
new file mode 100644
index 0000000..bf014ae
--- /dev/null
+++ b/BoxDemo.java
@@ -0,0 +1,21 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+public class BoxDemo {
+public static void main(String[] args) {
+// Create two Box objects
+Box box1 = new Box(20.0, 10.0, 15.0);
+Box box2 = new Box(6.0, 4.0, 2.0);
+double volume, area;
+// Get and display volume and surface area of box1
+volume = box1.volume();
+area = box1.surfaceArea();
+System.out.println("The volume of box1 is " + volume + " cubic cm");
+System.out.println("The surface area of box1 is "+area+" square cm\n");
+// Get and display volume of surface area box2
+System.out.println("The volume of box2 is " + box2.volume() + " cubic cm");
+System.out.println("The surface area of box2 is "+area+" square cm\n");
+}
+}
diff --git a/BoxDemoModify.java b/BoxDemoModify.java
new file mode 100644
index 0000000..a2a441a
--- /dev/null
+++ b/BoxDemoModify.java
@@ -0,0 +1,26 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+
+public class BoxDemoModify
+{
+   public static void main(String[] args){
+           // Create two Box obj ects
+    BoxModify box1 = new BoxModify(20.0, 10.0, 15.0);
+    BoxModify box2 = new BoxModify(box1);
+    BoxModify box3 = new BoxModify(6.0);
+    double volume, area;
+    //double volume, area;         
+    // Get and display volume and surface area of box1
+    volume = box1.volume();
+    area = box1.surfaceArea();
+    System.out.println("Box 1 is " + box1);
+    System.out.println("Box 2 is "+box2);
+    System.out.println("Box 3 is "+box3);
+    // Get and display volume of surface area box2
+    System.out.println("\nThe volume of box2 is " + box2.volume() + " cubic cm");
+    System.out.println("The surface area of box2 is "+area+" square cm\n");
+   }
+}
diff --git a/BoxModify.java b/BoxModify.java
new file mode 100644
index 0000000..fb0a288
--- /dev/null
+++ b/BoxModify.java
@@ -0,0 +1,43 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+
+public class BoxModify
+{
+        private double length , width , height; //instance variables
+        public BoxModify(double boxLength , double boxWidth , double boxHeight) { //constructor
+        length = boxLength;
+        width = boxWidth;
+        height = boxHeight;
+        }
+        public BoxModify(BoxModify obj) { //constructor
+        length = obj.length;
+        width = obj.width;
+        height = obj.height;
+        }
+        public BoxModify(double boxLength) { //constructor
+        length = boxLength;
+        width = boxLength;
+        height = boxLength;
+        }
+        public double volume() { //instant methods
+        return length * width * height;
+        }
+        public double surfaceArea() {
+        return 2*(length*width + length*height + width*height);
+        }
+        public double getLength( ){
+            return length;
+        }
+        public double getWidth(){
+            return width;
+        }
+        public double getHeight(){
+            return height;
+        }
+        public String toString() {
+        return "\nLength: "+getLength()+"   Width: "+getWidth()+"   Height:"+getHeight();
+    }
+}
diff --git a/Circle.java b/Circle.java
new file mode 100644
index 0000000..77f6643
--- /dev/null
+++ b/Circle.java
@@ -0,0 +1,23 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+public class Circle
+{
+private static int numberOfCircles = 0;
+private double radius;
+public Circle(double circleRadius) {
+numberOfCircles++;
+radius = circleRadius;
+}
+public double area() {
+return Math.PI * radius * radius;
+}
+public double circumference() {
+return 2.0 * Math.PI * radius;
+}
+public static int getNumberOfCircles() {
+return numberOfCircles;
+}
+}
diff --git a/CircleDemo.java b/CircleDemo.java
new file mode 100644
index 0000000..7bfa392
--- /dev/null
+++ b/CircleDemo.java
@@ -0,0 +1,18 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+public class CircleDemo {
+public static void main(String[] args) {
+System.out.println("The number of circles is " + Circle.getNumberOfCircles());
+Circle circle1 = new Circle(8.5);
+System.out.println("The number of circles is " + Circle.getNumberOfCircles());
+Circle circle2 = new Circle(5.0);
+System.out.println("The number of circles is " + Circle.getNumberOfCircles());
+System.out.println("The area of the first circle is \t" + circle1.area() + "square cm");
+System.out.println("The circumference of the first circle is\t" +circle1.circumference() + " cm");
+System.out.println("The area of the second circle is\t" + circle2.area() + "square cm");
+System.out.println("The circumference of the second circle is\t" +circle2.circumference() + " cm\n\n");
+    }
+}
diff --git a/Employee1.java b/Employee1.java
new file mode 100644
index 0000000..8264ffc
--- /dev/null
+++ b/Employee1.java
@@ -0,0 +1,57 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+
+public class Employee1
+{
+    private int iDNumber;
+    private String name;
+    private double salary;
+    public Employee1(int iD, String employeeName, double employeeSalary){
+    iDNumber = iD;
+    name = employeeName;
+    salary = employeeSalary;
+    }
+    public Employee1(String employeeName, int iD, double employeeSalary){
+    iDNumber = iD;
+    name = employeeName;
+    salary = employeeSalary;
+    }
+    public Employee1(int iD, String employeeName) {
+    iDNumber = iD;
+    name = employeeName;
+    salary = 0.0;
+    }
+    public Employee1(String employeeName, int iD) {
+    iDNumber = iD;
+    name = employeeName;
+    salary = 0.0;
+    }
+    public void setSalary(double employeeSalary) {
+    salary = employeeSalary;
+    }
+    public int getIDNumber(){
+        return iDNumber;
+    }
+    public String getName() {
+    return name;
+    }
+    public double getSalary() {
+    return salary;
+    }
+    public void deductions(double telephoneBills) {
+    salary -= telephoneBills;
+    }
+    public void deductions(double telephoneBills, double medicalBills) {
+    salary -= (telephoneBills + medicalBills);
+    }
+    public void raiseSalary(double percentIncrease) {
+    salary += salary * percentIncrease/100;
+    }
+    public void printDetails() {
+    System.out.println("\nID Number: "+iDNumber+"\nName: "+name+"\nSalary:"
+    +salary) ;
+    }
+}
diff --git a/Employee2.java b/Employee2.java
new file mode 100644
index 0000000..460cc9f
--- /dev/null
+++ b/Employee2.java
@@ -0,0 +1,51 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+
+public class Employee2
+{
+    private int iDNumber;
+    private String name;
+    private double salary;
+    public Employee2(int iDNumber, String name, double salary) {
+    this.iDNumber = iDNumber;
+    this.name = name;
+    this.salary = salary;
+    }
+    public Employee2(String name, int iDNumber, double salary) {
+    this(iDNumber, name, salary);
+    }
+    public Employee2(int iDNumber, String name) {
+    this(iDNumber, name, 0.0);
+    }
+    public Employee2(String name, int iDNumber) {
+    this(iDNumber, name, 0.0);
+    }
+    public void setSalary(double salary) {
+    this.salary = salary;
+    }
+    public int getIDNumber() {
+    return iDNumber;
+    }
+    public String getName() {
+    return name;
+    }
+    public double getSalary() {
+    return salary;
+    }
+    public void deductions(double telephoneBills) {
+    salary -= telephoneBills;
+    }
+    public void deductions(double telephoneBills, double medicalBills) {
+    salary -= (telephoneBills + medicalBills);
+    }
+    public void raiseSalary(double percentIncrease) {
+    salary += salary * percentIncrease/100;
+    }
+    public void printDetails() {
+        System.out.println("\nID Number: "+iDNumber+"\nName: "+name+"\nSalary:"+salary);
+    }
+}
+  
\ No newline at end of file
diff --git a/Employee3.java b/Employee3.java
new file mode 100644
index 0000000..5b9fb3f
--- /dev/null
+++ b/Employee3.java
@@ -0,0 +1,50 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+
+public class Employee3
+{
+    private int iDNumber;
+    private String name;
+    private double salary;
+    public Employee3(int iDNumber, String name, double salary) {
+    this.iDNumber = iDNumber;
+    this.name = name;
+    this.salary = salary;
+    }
+    public Employee3(String name, int iDNumber, double salary) {
+    this(iDNumber, name, salary);
+    }
+    public Employee3(int iDNumber, String name) {
+    this(iDNumber, name, 0.0);
+    }
+    public Employee3(String name, int iDNumber) {
+    this(iDNumber, name, 0.0);
+    }
+    public void setSalary(double salary) {
+    this.salary = salary;
+    }
+    public int getIDNumber() {
+    return iDNumber;
+    }
+    public String getName() {
+    return name;
+    }
+    public double getSalary() {
+    return salary;
+    }
+    public void deductions(double telephoneBills) {
+    salary -= telephoneBills;
+    }
+    public void deductions(double telephoneBills, double medicalBills) {
+    salary -= (telephoneBills + medicalBills);
+    }
+    public void raiseSalary(double percentIncrease) {
+    salary += salary * percentIncrease/100;
+    }
+    public String toString() {
+        return "\nID Number: "+iDNumber+"\nName: "+name+"\nSalary:"+salary;
+    }
+}
diff --git a/Equation.java b/Equation.java
new file mode 100644
index 0000000..f199ad0
--- /dev/null
+++ b/Equation.java
@@ -0,0 +1,20 @@
+
+/**
+ * Write a description of class Equation here.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+public class Equation
+{
+   public static void main (String []args){
+    double a,b,c,root1,root2;
+    a=1;
+    b=-5;
+    c=6;
+    root1=(-b+Math.sqrt(Math.pow(b,2)-4*a*c)/2*a);
+    System.out.println(root1);
+    root2=(-b-Math.sqrt(Math.pow(b,2)-4*a*c)/2*a);
+    System.out.println(root2);
+    }
+}
diff --git a/Lab3.java b/Lab3.java
new file mode 100644
index 0000000..c73ce47
--- /dev/null
+++ b/Lab3.java
@@ -0,0 +1,63 @@
+
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+import java.util.Scanner;
+public class Lab3
+{
+    public static void main(String[]arg){
+System.out.println("\nEXERCISES 01 Volume&Surface-area");
+Scanner scann  = new Scanner(System.in);
+System.out.println("Enter the length:");
+double l = scann.nextDouble();
+System.out.println("Enter the width:");
+double w = scann.nextDouble();
+System.out.println("Enter the heigth:");
+double h = scann.nextDouble();
+double volume = (h*w*l);
+double surface = 2*(l*w+l*h+w*h);
+System.out.println("The volume of the box: "+volume);
+System.out.println("The surface area of the box: "+surface);
+System.out.println("\nEXERCISES 02 USERNAME&DOMAIN");
+    Scanner scan  = new Scanner(System.in);
+     String domain,username;
+      System.out.println("Please enter a valid email address");
+       String email = scan.nextLine();   
+        username = email.split("@")[0];
+         domain = email.substring(email.indexOf("@")+1);
+         //username = email.substring(email.indexOf("@")-1);         
+          System.out.println("\nUsername:"+ username); 
+           System.out.println("Domain:"+ domain);
+           
+System.out.println("\nEXERCISES 03 Perimeter&Area");
+    Scanner scan1  = new Scanner(System.in);
+    System.out.println("Enter the 1st sides:");
+    int a = scan1.nextInt();
+    System.out.println("Enter the 2nd sides:");
+    int b = scan1.nextInt();
+    System.out.println("Enter the 3rd sides:");
+    int c = scan1.nextInt();
+    double s =(a+b+c)/2;
+    double area = Math.sqrt(s*(s-a)*(s-b)*(s-c)); 
+    System.out.println("The Perimeter of triangle is: "+s);
+    System.out.println("The area of the triangle with the input sides is "+ area+"unit square");
+    if(a>b && a>c){
+    System.out.println("The longest side is: "+a);
+    }else if(b>c){
+    System.out.println("The longest side is: "+b);
+    }else{
+    System.out.println("The longest side is: "+c);
+    }
+    
+    if(a<b && a<c){
+    System.out.println("The smallest side is: "+a);
+    }else if(b<c){
+    System.out.println("The smallest side is: "+b);
+    }else{
+    System.out.println("The smallest side is: "+c);
+    }
+
+}
+}
diff --git a/MathFunction.java b/MathFunction.java
new file mode 100644
index 0000000..387a826
--- /dev/null
+++ b/MathFunction.java
@@ -0,0 +1,26 @@
+
+/**
+ * Write a description of class MathFunction here.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+//a program that will display value of Cos, Exp, Sin, Absolute value and tan
+public class MathFunction {
+	public static void main(String[] args) {
+		double k;
+		k =2/4*4%3;
+		//converting from degrees to radian
+		double cos=Math.cos(Math.toRadians(30)); 
+		double sin=Math.sin(Math.toRadians(30));
+		double tan=Math.tan(Math.toRadians(30));
+		
+		System.out.println("The value of cos 30: "+cos);
+		System.out.println("The value of exp(15): "+Math.exp(15));
+		System.out.println("The value of sin 30: "+sin);
+		System.out.println("The absolute value of k is "+Math.abs(k));
+		System.out.println("The value of tan 30: "+tan);
+	}
+
+ }
+
diff --git a/MoveRectangle.java b/MoveRectangle.java
new file mode 100644
index 0000000..72b640c
--- /dev/null
+++ b/MoveRectangle.java
@@ -0,0 +1,17 @@
+
+/**
+ * Write a description of class Move here.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+import java.awt.Rectangle;
+public class MoveRectangle{
+    public static void main (String []args){
+        Rectangle myRectangle=new Rectangle(5, 5, 10, 10);
+        System.out.println("Before Translation: "+myRectangle);
+        myRectangle.translate(15,25);
+        System.out.println("After Translation:"+myRectangle);
+    }
+    
+}
diff --git a/Pattern.java b/Pattern.java
new file mode 100644
index 0000000..51d6163
--- /dev/null
+++ b/Pattern.java
@@ -0,0 +1,18 @@
+
+/**
+ * Write a description of class Pattern here.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+public class Pattern
+{
+    // Program to display pattern
+     public static void main (String args[]){ 
+        System.out.println("    *\n *     *\n*   *   *\n*       *\n");
+        System.out.println("*  *\n*  *  *\n*  *\n*  *  *\n*  *\n");
+        System.out.println("*   *\n*   *\n*   *\n * * \n");
+    }
+    
+    
+}
diff --git a/PrintMiles.java b/PrintMiles.java
new file mode 100644
index 0000000..57b3d0c
--- /dev/null
+++ b/PrintMiles.java
@@ -0,0 +1,26 @@
+
+/**
+ * Write a description of class PrintMiles here.
+ *
+ * @author
+ * @version (a version number or a date)
+ */
+public class PrintMiles
+{
+    public static void main(String[] args) {
+        double miles=10.5;
+		miles++;
+		System.out.println("The current value of miles is now: "+miles);
+		//Lab2 question 1(b) 
+		double X,Y,Z,d=1.0;
+		int a=1;
+		X=d+ 43 % 5*(23*3%2);
+		Y=1.5 *3 +(++a);
+		Z=3 +(d*d)+4;
+		System.out.println("\n\nX ="+X+"\nY ="+Y+"\nZ ="+Z);
+		
+		double R,p=3.758;
+		R=Math.log(p);
+		System.out.println("\n\nR=log(p) \nR ="+R); 
+    }
+}
diff --git a/PrintingFormat.java b/PrintingFormat.java
new file mode 100644
index 0000000..ec73b15
--- /dev/null
+++ b/PrintingFormat.java
@@ -0,0 +1,27 @@
+
+/**
+ * Write a description of class PrintingFormat here.
+ *
+ * @author 
+ * @version (a version number or a date)
+ */
+public class PrintingFormat
+{
+    //PrintingFormat.java 
+    public static void main(String[] args){   
+        System.out.printf("%d",60);   
+        System.out.println();      
+        System.out.printf("%03d%n",9);      
+        System.out.printf("PI %.3f",3.141527);   
+        System.out.println();      
+        System.out.printf("Total is: N%,.2f%n", 84785.8978);      
+        System.out.printf("%-10S%n","Department of Computer Science");      
+        System.out.printf("% .2f",-67.8917);   
+        System.out.println();      
+        System.out.printf("% .2f",67.8917);   
+        System.out.println();      
+        System.out.printf("%C",'a');  
+        System.out.println();
+    
+    }
+}
diff --git a/PseudocodeA.java b/PseudocodeA.java
new file mode 100644
index 0000000..bc52f15
--- /dev/null
+++ b/PseudocodeA.java
@@ -0,0 +1,24 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+import java.util.Scanner;
+public class PseudocodeA
+{
+ public static void main(String[]arg){
+     int grade;
+     double average;
+     int total=0;
+     int counter=1;
+    Scanner input = new Scanner(System.in);
+    while(counter<=10){
+    System.out.println("Enter enter next grade");
+    grade=input.nextInt();
+    total=total+grade;
+    counter=counter+1;
+}
+    average = total/10;
+    System.out.println("The class avarage: "+average);
+}
+}
diff --git a/PseudocodeB.java b/PseudocodeB.java
new file mode 100644
index 0000000..f6cbdc7
--- /dev/null
+++ b/PseudocodeB.java
@@ -0,0 +1,32 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+import java.util.Scanner;
+public class PseudocodeB
+{
+  public static void main(String[]arg){
+   int  total = 0;
+   int counter = 0;
+   int grade;
+   float average;
+    Scanner input = new Scanner(System.in);
+      System.out.println("Enter the first grade,type 00 to indicate the end");
+       grade=input.nextInt();
+    while(grade!=00){
+     total=total+grade;
+      counter=counter+1;
+       System.out.println("Enter the next grade,type 00 to indicate the end");
+        grade=input.nextInt();
+   if(grade==0){
+    break;
+    }
+}
+if(counter!=0){
+ average=total/counter;
+  System.out.println("The avarage: "+average);
+}else
+System.out.println("No grades were entered!");   
+}
+}
diff --git a/PseudocodeC.java b/PseudocodeC.java
new file mode 100644
index 0000000..60b26c1
--- /dev/null
+++ b/PseudocodeC.java
@@ -0,0 +1,29 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+import java.util.Scanner;
+public class PseudocodeC
+{
+public static void main(String[]arg){
+int passes=0;
+int failure=0;
+int student=1;
+int result;
+Scanner input = new Scanner(System.in);
+while(student<=10){
+System.out.println("Enter result,1=pass,0=fail:");
+result=input.nextInt();
+if(result==1)
+passes=passes+1;
+else
+failure=failure+1;
+student=student+1;
+}
+System.out.println("Passed: "+passes);
+System.out.println("Failed: "+failure);
+if(passes>8)
+System.out.println("Execellent to instructor");
+}   
+}
diff --git a/QuadraticEquation.java b/QuadraticEquation.java
new file mode 100644
index 0000000..d0789bb
--- /dev/null
+++ b/QuadraticEquation.java
@@ -0,0 +1,38 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+import java.util.Scanner;
+public class QuadraticEquation
+{
+    public static void main(String[] args){
+        Scanner scan=new Scanner(System.in);
+        double a,b,c,root1,root2;
+        int determinant;
+        System.out.println("Enter value of a: ");
+        a=scan.nextDouble();
+        System.out.println("Enter value of b: ");
+        b=scan.nextDouble();
+        System.out.println("Enter value of c: ");
+        c=scan.nextDouble();
+        root1=(-b+(Math.sqrt(Math.pow(b,2)-(4*a*c))))/(2*a);
+        root2=(-b-(Math.sqrt(Math.pow(b,2)-(4*a*c))))/(2*a);
+        determinant= (int)(Math.pow(b,2)-(4*a*c));
+        System.out.println("\nThe root of the equation is root1: "+root1+"  root2: "+root2);
+        System.out.println("Determinant: "+determinant);
+        if(determinant>0)
+        {
+            System.out.println("The root are real and distinct: "+root1+" ,"+root2);
+        }
+        else if(determinant==0)
+        {
+            System.out.println("The root are real and equal: "+root1);
+        }
+        else
+        {
+            System.out.println("The root are complex");
+        }
+    }
+    
+}
diff --git a/Rectangle.java b/Rectangle.java
new file mode 100644
index 0000000..3e84dc8
--- /dev/null
+++ b/Rectangle.java
@@ -0,0 +1,29 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+class Rectangle {
+private double length , width;
+public Rectangle(double rectangleLength , double rectangleWidth) {
+length = rectangleLength;
+width = rectangleWidth;
+}
+public double area() {
+return length * width;
+}
+// Accessor methods
+public double getLength() {
+return length;
+}
+public double getWidth() {
+return width;
+}
+// Mutator methods
+public void setLength(double newLength) {
+length = newLength;
+}
+public void setRectangleWidth(float newWidth) {
+width = newWidth;
+}
+}
\ No newline at end of file
diff --git a/RectangleDemo.java b/RectangleDemo.java
new file mode 100644
index 0000000..a3ad18e
--- /dev/null
+++ b/RectangleDemo.java
@@ -0,0 +1,17 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+   public class RectangleDemo {
+public static void main(String[] args) {
+Rectangle rectangle = new Rectangle(20.0, 10.0);
+double area = rectangle.area();
+System.out.println("The area of the rectangle is\t" + area + " square cm");
+System.out.println("The length of the rectangle is\t" + rectangle.getLength() +" cm");
+rectangle.setLength(12.0);
+System.out.println("The new length of the rectangle is " +rectangle.getLength() + " cm");
+System.out.println("The new area of the rectangle is " + rectangle.area() + "square cm\n\n");
+}
+
+}
diff --git a/Student.java b/Student.java
new file mode 100644
index 0000000..eda96a3
--- /dev/null
+++ b/Student.java
@@ -0,0 +1,75 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+public class Student
+{
+    // instance variables
+    private String name;
+    private int idNumber;
+    private double quiz1,quiz2,quiz3;
+
+    /**
+     * Constructor for objects of class Student
+     */
+    public Student(String name, int id, double quiz1,double quiz2, double quiz3)
+    {
+        this.name=name;
+        this.idNumber=id;
+        this.quiz1=quiz1;
+        this.quiz2=quiz2;
+        this.quiz3=quiz3;
+    }
+
+    //get name
+    public String getName(String name)
+    {
+        return name;
+    }
+    //get id number
+    public int getId(int id)
+    {
+        return id;
+    }
+    //get quiz1
+    public double getQuizOne(double quiz1)
+    {
+        return quiz1;
+    }
+    //get quiz2
+    public double getQuizTwo(double quiz2)
+    {
+        return quiz2;
+    }
+    //get quiz3
+    public double getQuizThree(double quiz3)
+    {
+        return quiz3;
+    }
+    //set method for quiz1
+    public void setQuizOne(double quiz1){
+        this.quiz1=quiz1;
+    }
+    //set method for quiz2
+    public void setQuizTwo(double quiz2){
+        this.quiz2=quiz2;
+    }
+    //set method for quiz3
+    public void setQuizThree(double quiz3){
+        this.quiz3=quiz3;
+    }
+    //method to return average of the three quiz
+    public double getAverage()
+    {
+        double average= (getQuizOne(quiz1) + getQuizTwo(quiz2) + getQuizThree(quiz3))/3;
+        return average;
+    }
+    //method to print details of student and scores
+    public void printDetails()
+    {
+        System.out.println("\nStudent Name:  "+getName(name));
+        System.out.println("Student ID:  "+getId(idNumber));
+        System.out.println("Quiz Grades: "+getQuizOne(quiz1)+"   "+getQuizTwo(quiz2)+"   "+getQuizThree(quiz3));
+    }
+}
diff --git a/StudentDemo.java b/StudentDemo.java
new file mode 100644
index 0000000..2c4c286
--- /dev/null
+++ b/StudentDemo.java
@@ -0,0 +1,33 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+import java.util.Scanner;
+public class StudentDemo
+{
+    public static void main(String[] args){
+        String name;
+        int idNumber;
+        double quiz1,quiz2,quiz3;
+        Scanner input=new Scanner(System.in);
+        System.out.print("\n\nEnter Student name: ");
+          name=input.nextLine();
+            System.out.print("Enter Student ID: ");
+             idNumber=input.nextInt();
+               System.out.print("Enter Quiz1 score: ");
+                quiz1=input.nextDouble();
+                  System.out.print("Enter Quiz2 score: ");
+                   quiz2=input.nextDouble();
+        System.out.print("Enter Quiz3 score: ");
+            quiz3=input.nextDouble();
+              Student stud=new Student(name,idNumber,quiz1,quiz2,quiz3);
+                stud.printDetails();
+        System.out.print("\nAverage: "+stud.getAverage());
+         System.out.print("\n\nEnter new score for quiz3: ");
+          quiz3=input.nextDouble();
+           stud.setQuizThree(quiz3);
+            stud.printDetails();
+        System.out.print("\nAverage: "+stud.getAverage());
+    }
+}
diff --git a/SwitchCase.java b/SwitchCase.java
new file mode 100644
index 0000000..23e8425
--- /dev/null
+++ b/SwitchCase.java
@@ -0,0 +1,36 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+import java.util.Scanner;
+public class SwitchCase
+{
+    public static void main(String [] args)
+    {
+        int above;
+        int score ;
+        char grade;
+        Scanner input = new Scanner(System.in);
+        System.out.println("Enter your score");
+        score = input.nextInt();
+        switch (score){
+        case 90:
+            grade= 'A';
+            break;
+        case 80:
+            grade= 'B';
+            break;
+        case 70:
+            grade= 'C';
+            break;
+        case 60:
+            grade= 'D';
+            break;
+        default:
+            grade= 'F';
+        }
+        System.out.println("Your test score is "+ score
+         + ", which is equivalent to the grade " + grade + ".");
+     }
+}
diff --git a/Table.java b/Table.java
new file mode 100644
index 0000000..e1609ce
--- /dev/null
+++ b/Table.java
@@ -0,0 +1,18 @@
+
+/**
+ * Write a description of class Table here.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+public class Table
+{
+   
+     public static void main (String args[]){ 
+       System.out.println("      1      2      3      4\n");
+       System.out.println("1     1      2      3      4\n");
+       System.out.println("2     2      4      6      16\n");
+       System.out.println("3     3      6      9      12\n");
+       System.out.println("4     4      8      12     16\n");
+    }
+}
diff --git a/TestAuthor.java b/TestAuthor.java
new file mode 100644
index 0000000..72896a8
--- /dev/null
+++ b/TestAuthor.java
@@ -0,0 +1,16 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+public class TestAuthor {
+   public static void main(String[] args) {
+      Author auth = new Author("Ndaliman Abdullahi Muhammed", "Phoenixkheeng@gmail.com", 'm');
+      System.out.println(auth); 
+      auth.setEmail("7sgeneral@yahoo.com");
+      System.out.println(auth);
+      System.out.println("name is: " + auth.getName());
+      System.out.println("gender is: " + auth.getGender());
+      System.out.println("email is: " + auth.getEmail());
+   }
+}
\ No newline at end of file
diff --git a/TestEmployee1.java b/TestEmployee1.java
new file mode 100644
index 0000000..681d54e
--- /dev/null
+++ b/TestEmployee1.java
@@ -0,0 +1,35 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+
+import java.util.Scanner;
+public class TestEmployee1
+{
+    public static void main(String[ ] args) {
+        Scanner input = new Scanner(System. in);
+        int number;
+        String name;
+        double salary;
+        System.out.print("Enter Name for Employee 1: ");
+        name = input.nextLine();
+        System.out.print("Enter ID Number for Employee 1: ");
+        number = input.nextInt();
+        System.out.print("Enter Salary for Employee 1: ");
+        salary = input.nextDouble();
+        Employee1 emp1 = new Employee1(number, name, salary);
+        input.nextLine();
+        System.out.print("\nEnter Name for Employee 2: ");
+        name = input.nextLine();
+        System.out.print("Enter ID Number for Employee 2: ");
+        number = input.nextInt();
+        Employee1 emp2 = new Employee1(number, name);
+        emp2.setSalary(emp1.getSalary());
+        emp1.deductions(50);
+        emp2.deductions(60, 40);
+        emp1.printDetails();
+        emp2.printDetails();
+    }
+}
+
diff --git a/TestEmployee2.java b/TestEmployee2.java
new file mode 100644
index 0000000..fcff95e
--- /dev/null
+++ b/TestEmployee2.java
@@ -0,0 +1,33 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+import java.util.Scanner;
+public class TestEmployee2
+{
+    public static void main(String[ ] args) {
+        Scanner input = new Scanner(System. in);
+        int number;
+        String name;
+        double salary;
+        System.out.print("Enter Name for Employee 1: ");
+        name = input.nextLine();
+        System.out.print("Enter ID Number for Employee 1: ");
+        number = input.nextInt();
+        System.out.print("Enter Salary for Employee 1: ");
+        salary = input.nextDouble();
+        Employee2 emp1 = new Employee2(number, name, salary);
+        input.nextLine();
+        System.out.print("\nEnter Name for Employee 2: ");
+        name = input.nextLine();
+        System.out.print("Enter ID Number for Employee 2: ");
+        number = input.nextInt();
+        Employee2 emp2 = new Employee2(number, name);
+        emp2.setSalary(emp1.getSalary());
+        emp1.deductions(50);
+        emp2.deductions(60, 40);
+        emp1.printDetails();
+        emp2.printDetails();
+    }
+}
diff --git a/TestEmployee3.java b/TestEmployee3.java
new file mode 100644
index 0000000..55451ff
--- /dev/null
+++ b/TestEmployee3.java
@@ -0,0 +1,34 @@
+/**
+ * Write a description of class Lab3 here.
+ * 
+ * @ jesse john zubakpere u15/fns/csc/082
+ */
+
+import java.util.Scanner;
+public class TestEmployee3
+{
+    public static void main(String[ ] args) {
+        Scanner input = new Scanner(System. in);
+        int number;
+        String name;
+        double salary;
+        System.out.print("Enter Name for Employee 1: ");
+        name = input.nextLine();
+        System.out.print("Enter ID Number for Employee 1: ");
+        number = input.nextInt();
+        System.out.print("Enter Salary for Employee 1: ");
+        salary = input.nextDouble();
+        Employee3 emp1 = new Employee3(number, name, salary);
+        input.nextLine();
+        System.out.print("\nEnter Name for Employee 2: ");
+        name = input.nextLine();
+        System.out.print("Enter ID Number for Employee 2: ");
+        number = input.nextInt();
+        Employee3 emp2 = new Employee3(number, name);
+        emp2.setSalary(emp1.getSalary());
+        emp1.deductions(50);
+        emp2.deductions(60, 40);
+        System.out.println(emp1);
+        System.out.println(emp2);
+    }
+}