My assignments.

javaTraining.iml

+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file

src/Class/Animal.java

+package Class;
+
+public abstract class Animal { // its an abstract class which can contain abstract and concreate both method.
+
+   protected void eat() //concreate  method.
+    {
+        System.out.println("Eat Food");
+    }
+
+    abstract void makeSound(); //abstract method.
+}

src/Class/AudioPlayer.java

+package Class;
+
+public interface AudioPlayer {
+    void playMusic();
+    void stopMusic();
+}

src/Class/Car.java

+package Class;
+
+public class Car implements AudioPlayer,Engine{
+
+    Car()
+    {
+        System.out.println("Object created");
+    }
+    // Audio player implementation
+
+    @Override
+    public void playMusic()
+    {
+        System.out.println("The Music is Playing");
+    }
+
+    @Override
+    public void stopMusic() {
+        System.out.println("The Music is Stop");
+    }
+
+
+    // Engine implementation.
+
+    @Override
+    public void startCar()
+    {
+        System.out.println("The car is start");
+    }
+
+    @Override
+    public void stopCar() {
+        System.out.println("The car is stop");
+    }
+
+
+}

src/Class/Cat.java

+package Class;
+
+public class Cat extends Animal{
+
+    Cat()
+    {
+        System.out.println("Object is created");
+    }
+
+    @Override
+    void makeSound()
+    {
+        super.eat(); // to use that parent function here.
+        System.out.println("Meoow");
+    }
+}

src/Class/Engine.java

+package Class;
+
+public interface Engine {
+    void startCar();
+    void stopCar();
+}

src/Class/SuperClass.java

+package Class;
+
+public class SuperClass {
+}

src/Class/main.java

+package Class;
+
+public class main {
+    public static void main(String[] args) {
+
+        // part here is accesing  abstrract and its concreate class.
+        Cat obj = new Cat();
+        obj.makeSound();
+        obj.eat(); // its not cat class function but as cat is inheriting animal so it can access animal class method as well.
+
+        // interface implementation.
+
+        Car alto =  new Car();
+        alto.playMusic();
+        alto.stopMusic();
+        alto.startCar();
+        alto.stopCar();
+
+    }
+}

src/Constructors/Bank.java

+package Constructors;
+
+public interface Bank {
+    void deposit(double b);
+    void withdraw(double b);
+
+}

src/Constructors/CurrentAccount.java

+package Constructors;
+
+public class CurrentAccount implements Bank{
+    private int accountNo;
+    protected double balance;
+    protected float tax;
+
+    // default constructor
+    CurrentAccount(){
+        System.out.println("Default constructor calls");
+    }
+
+    //parametrize constructor
+
+    CurrentAccount(int accountNo, double balance,float tax)
+    {
+
+        this.balance=balance;
+        this.accountNo=accountNo;
+        this.tax=tax;
+
+        System.out.println("Parametrizle connstructor run and values intialize");
+    }
+
+    CurrentAccount (CurrentAccount account1)
+    {
+          this.accountNo = account1.accountNo;
+          this.balance = account1.balance;
+          this.tax = account1.tax;
+
+        System.out.println("Copy connstructor runs and copy the account 1 value!");
+    }
+
+// getters
+
+
+    public double getBalance() {
+        return balance;
+    }
+
+    @Override
+   public void deposit(double b)
+    {
+        balance+=b;
+        System.out.println("Money Deposited");
+    }
+
+    @Override
+   public void withdraw(double b)
+    {
+        balance-=b;
+        balance-=tax;
+        System.out.println("Money Withdrawed");
+    }
+
+    void printBalance()
+    {
+        System.out.println("Your account balance is: "+balance);
+    }
+
+
+
+}

src/Constructors/Main.java

+package Constructors;
+import java.util.Scanner;
+public class Main {
+    public static void main(String[] args) { // constituennt is  part of an object having its attribute and methods.
+
+        Scanner obj= new Scanner(System.in);
+        System.out.println("Enter Account no:");
+        int accountNo= obj.nextInt();
+        System.out.println("Enter Balance");
+        double balance= obj.nextDouble();
+        System.out.println("Enter tax value");
+        float tax= obj.nextFloat();
+
+       CurrentAccount account2= new CurrentAccount(); // for default constructor run. // instannsiation of object as well.
+        CurrentAccount account1 = new CurrentAccount(accountNo, balance,tax); // also 200 added because we added during intializing in parametrize constructor.
+       account2.printBalance();
+        account1.printBalance();
+        account1.deposit(balance);
+        account1.printBalance();
+        account1.withdraw(balance);
+        account1.printBalance();
+
+        CurrentAccount account3; // declaretion of object.
+         account3 = new CurrentAccount(account1); // instansiation and intialization of object.
+
+        account3.printBalance();
+
+    }
+}

src/Constructors/SavingAccounnt.java

+package Constructors;
+
+public class SavingAccounnt implements Bank {
+
+
+
+        private int accountNo;
+        protected double balance;
+        protected float tax;
+
+
+        //parametrize constructor
+
+        SavingAccounnt(int accountNo, double balance,float tax)
+        {
+
+            this.balance=balance;
+            this.accountNo=accountNo;
+            this.tax=tax;
+
+        }
+
+
+// getters
+
+
+        public double getBalance() {
+            return balance;
+        }
+
+        @Override
+        public void deposit(double b)
+        {
+            balance+=b;
+            System.out.println("Money Deposited");
+        }
+
+        @Override
+        public void withdraw(double b)
+        {
+            balance-=b;
+            System.out.println("Money Withdrawed");
+        }
+
+        void printBalance()
+        {
+            System.out.println("Your account balance is: "+balance);
+        }
+
+
+
+    }
+
+

src/DataTypes/Main.java

+package DataTypes;
+import java.util.Scanner;
+public class Main {
+    public static void main(String[] args) {
+
+        Scanner obj = new Scanner(System.in);
+        PremativeDatatype Obj = new PremativeDatatype();
+
+        System.out.println("Enter name:");
+        String name = obj.nextLine();
+
+        System.out.println("Enter Age:");
+        int age = obj.nextInt();
+
+
+
+        System.out.println("Enter percentage");
+        float percentage = obj.nextFloat();
+
+        System.out.println("Enter income:");
+        double income = obj.nextDouble();
+
+
+        Obj.setAge(age);
+
+
+        Obj.setName(name);
+
+
+        Obj.setIncome(income);
+
+
+        Obj.setPercentage(percentage);
+
+        Obj.displayItems();
+
+
+        // using refrence variable usage.
+
+        RefrenceDatatype ref = new RefrenceDatatype();
+
+
+        // taking marks array is input.
+
+
+        int marks[]= new int[5];
+
+        for(int i=0;i<5;i++)
+        {
+            marks[i] = obj.nextInt();
+        }
+
+
+        ref.setMark(marks);
+
+        ref.setName("Zain");
+
+        ref.printStudentData();
+
+
+
+
+
+
+
+
+
+    }
+}

src/DataTypes/PremativeDatatype.java

+package DataTypes;
+import java.util.Scanner;
+public class PremativeDatatype {
+
+    public  int age;
+    public String name;
+    public Float percentage;
+    public Double income;
+    PremativeDatatype()
+    {
+        System.out.println("Object Created");
+        age=0;
+        name = "Null";
+        percentage = 0.0F;
+        income= 0.00000;
+    }
+
+    // setters
+    public void setAge(int age) {
+        this.age = age;
+    }
+
+    public void setName(String name)
+    {
+        this.name = name;
+    }
+
+    public void setPercentage(Float percentage)
+    {
+        this.percentage = percentage;
+    }
+
+    public void setIncome(Double income)
+    {
+        this.income=income;
+    }
+
+    public void displayItems()
+    {
+        System.out.println("Your name is :"+age);
+        System.out.println("Your age is :"+name);
+        System.out.println("Your Percentage is :"+percentage);
+        System.out.println("Your Income is :"+income);
+    }
+
+
+}

src/DataTypes/RefrenceDatatype.java

+package DataTypes;
+
+public class RefrenceDatatype {
+
+    public int mark[] = new int[5];
+    public String name;
+
+    RefrenceDatatype()
+    {
+        System.out.println("Object is created");
+        name ="";
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public void setMark(int[] mark) {
+        this.mark = mark;
+    }
+
+    public void printStudentData()
+    {
+        System.out.println("Name is :"+name);
+        for(int i=0;i<5;i++)
+        {
+            System.out.println("Marks of this: "+mark[i]);
+        }
+    }
+}

src/Methods/Library.java

+package Methods;
+import java.util.Scanner;
+
+
+public class Library {
+
+    int bookNo;
+    String bookTitle;
+    String yearOfPublish;
+    long price;
+
+    int tax;
+
+
+    Library() // constructor.
+    {
+        bookNo = 0;
+        bookTitle = "";
+        yearOfPublish = "";
+        tax =0;
+    }
+
+
+    public int getBookNo() { // they are usually Methods which return the value and there type is take nothing return something.
+        return bookNo;
+
+    }
+
+    public String getBookTitle() {
+        return bookTitle;
+    }
+
+    public long getPrice() {
+        return price;
+    }
+
+   public String getYearOfPublish()
+   {
+       return yearOfPublish;
+   }
+
+
+    //setter also types of method which use to set the or change the value of variable;
+    // Type of this method is Take something return nothing.
+    public void setYearOfPublish(String yearOfPublish) {
+        this.yearOfPublish = yearOfPublish;
+    }
+
+    public void setBookNo(int bookNo) {
+        this.bookNo = bookNo;
+    }
+
+    public void setBookTitle(String bookTitle) {
+        this.bookTitle = bookTitle;
+    }
+
+    public void setPrice(long price) {
+        this.price = price;
+    }
+
+    // Function take nothing return nothing.
+
+    public void printBook()
+    {
+        System.out.println("Book name is: "+bookTitle);
+        System.out.println("Book publish date: "+yearOfPublish);
+        System.out.println("Book id no: "+bookNo);
+        System.out.println("Book price is: "+price);
+
+
+    }
+
+   // take something return something.
+   public int sendTax(int t)
+    {
+        System.out.println("Enter the Tax: ");
+        Scanner obj = new Scanner(System.in);
+        tax=obj.nextInt();
+        tax+=t;
+        return tax;
+
+    }
+
+
+}
\ No newline at end of file

src/Methods/Main.java

+package Methods;
+
+public class Main {
+    public static void main(String[] args) {
+     Library obj = new Library();
+
+     obj.setBookNo(5);
+     obj.setBookTitle("Academic");
+     obj.setPrice(5000);
+     obj.setYearOfPublish("11-Nov-2004");
+
+     obj.printBook();
+     int tax = obj.sendTax(286);
+
+        System.out.println("The tax after adding 1usd:"+tax);
+    }
+}

src/Syntax/Circle.java

+package Syntax;
+
+public class Circle extends Shape{ // class name must be start with capital letter.
+    @Override
+    int calculateArea(int a , int b) // camle case use here
+    {
+            int area = a*b;
+
+            return area;
+    }
+}

src/Syntax/Main.java

+package Syntax;
+import java.util.Scanner;
+
+public class Main {
+    public static void main(String[] args) {
+        int area;
+        Scanner object =  new Scanner(System.in);
+        System.out.println("Enter length: ");
+        int length = object.nextInt();
+        System.out.println("Enter Breadth: ");
+        int breadth = object.nextInt();
+        Circle obj = new Circle ();
+        area=obj.calculateArea(length,breadth);
+        System.out.println("The total area is : "+area);
+
+    }
+}
+

src/Syntax/Shape.java

+package Syntax;
+
+abstract class Shape {
+    Shape()
+    {
+        System.out.println("Object Intialize");
+    }
+
+   abstract int calculateArea(int a, int b);
+}

src/Variables/Main.java

+package Variables;
+
+
+
+public class Main {
+    public static void main(String[] args) {
+
+        Students obj = new Students();
+        Students obj1 = new Students();
+        Students obj2 = new Students();
+
+
+        obj2.setName("Zain");
+        obj.setName("Qazi");
+        obj1.setName("Haseeb");
+
+
+        obj2.displayStudentData();
+
+
+    }
+}

src/Variables/Students.java

+package Variables;
+
+public class Students {
+    public static int NO_OF_STUDENTS=0;  // static variable
+    public String name;
+
+    //constructor
+    Students()
+    {
+        name = "";
+        //NO_OF_STUDENTS= 0; if we do this it will always reset our value.
+        System.out.println("Object Created");
+        NO_OF_STUDENTS++;
+    }
+
+    //setter
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    // getter.
+    public static int getNoOfStudents()
+    {
+        return NO_OF_STUDENTS;
+    }
+
+    public void displayStudentData()
+    {
+        System.out.println("Your name is: "+name);
+        System.out.println("No of student Enroll: "+NO_OF_STUDENTS);
+    }
+
+
+}