diff --git a/newnew/List_of_Cars_manufactured_in_2000_price_higher_than_5000.txt b/newnew/List_of_Cars_manufactured_in_2000_price_higher_than_5000.txt
new file mode 100644
index 0000000..cc67dcb
--- /dev/null
+++ b/newnew/List_of_Cars_manufactured_in_2000_price_higher_than_5000.txt
@@ -0,0 +1,18 @@
+List of Cars manufactured in 2000 with price higher than 5000
+-------------------------------
+ID: 12
+Make: Toyota
+Model: SUV
+Manufacture Year: 2000
+Color: Blue
+Price: 20008
+Registration Number: BH0C0411
+-------------------------------
+ID: 14
+Make: AUDI
+Model: Hatchback
+Manufacture Year: 2000
+Color: White
+Price: 20010
+Registration Number: BH0C0003
+-------------------------------
diff --git a/newnew/List_of_Cars_of_BMW.txt b/newnew/List_of_Cars_of_BMW.txt
new file mode 100644
index 0000000..5d0a4bc
--- /dev/null
+++ b/newnew/List_of_Cars_of_BMW.txt
@@ -0,0 +1,18 @@
+List of Cars of a given brand: BMW
+-------------------------------
+ID: 2
+Make: BMW
+Model: Sedan
+Manufacture Year: 2005
+Color: White
+Price: 5500
+Registration Number: DL2C9898
+-------------------------------
+ID: 10
+Make: BMW
+Model: Sedan
+Manufacture Year: 1996
+Color: Pink
+Price: 2000
+Registration Number: BH0C2052
+-------------------------------
diff --git a/newnew/List_of_Cars_of_Sedan_more_than_10_years.txt b/newnew/List_of_Cars_of_Sedan_more_than_10_years.txt
new file mode 100644
index 0000000..a5dd89b
--- /dev/null
+++ b/newnew/List_of_Cars_of_Sedan_more_than_10_years.txt
@@ -0,0 +1,34 @@
+List of Cars of a given model used for more than 10 years: Sedan
+-------------------------------
+ID: 1
+Make: Mercedes
+Model: Sedan
+Manufacture Year: 1995
+Color: Grey
+Price: 2500
+Registration Number: DL3C2001
+-------------------------------
+ID: 2
+Make: BMW
+Model: Sedan
+Manufacture Year: 2005
+Color: White
+Price: 5500
+Registration Number: DL2C9898
+-------------------------------
+ID: 8
+Make: AUDI
+Model: Sedan
+Manufacture Year: 2001
+Color: Black
+Price: 12500
+Registration Number: DL3C8501
+-------------------------------
+ID: 10
+Make: BMW
+Model: Sedan
+Manufacture Year: 1996
+Color: Pink
+Price: 2000
+Registration Number: BH0C2052
+-------------------------------
diff --git a/newnew/Main.java b/newnew/Main.java
new file mode 100644
index 0000000..83fd4c8
--- /dev/null
+++ b/newnew/Main.java
@@ -0,0 +1,69 @@
+import java.io.*;
+
+class Car {
+    int id;
+    String make;
+    String model;
+    int manufacture_year;
+    String color;
+    int price;
+    String registration_number;
+
+    public Car(int id, String make, String model, int manufacture_year, String color, int price, String registration_number) {
+        this.id = id;
+        this.make = make;
+        this.model = model;
+        this.manufacture_year = manufacture_year;
+        this.color = color;
+        this.price = price;
+        this.registration_number = registration_number;
+    }
+}
+
+public class Main {
+    public static void main(String[] args) {
+        Car[] obj = {
+                new Car(1,"Mercedes","Sedan",1995,"Grey",2500,"DL3C2001"),
+                new Car(2,"BMW","Sedan",2005,"White",5500,"DL2C9898"),
+                new Car(3,"Mercedes","SUV",2010,"White",7000,"DL2C2000"),
+                new Car(4,"Bugatti","Coupe",2016,"Red",592500,"DL4C2041"),
+                new Car(5,"AUDI","Coupe",2022,"Black",72500,"DL6C8451"),
+                new Car(6,"Mercedes","Convertible",2015,"Grey",152500,"DL3C6666"),
+                new Car(7,"Porsche","Coupe",2015,"White",102500,"DL3C6333"),
+                new Car(8,"AUDI","Sedan",2001,"Black",12500,"DL3C8501"),
+                new Car(9,"AUDI","Hatchback",2005,"White",4000,"DLAC2581"),
+                new Car(10,"BMW","Sedan",1996,"Pink",2000,"BH0C2052"),
+                new Car(11,"BMW","SUV",2016,"Blue",20010,"BH0C0001"),
+        };
+
+        String brandToFilter = "BMW";
+        String listFilePath = "List_of_Cars_of_" + brandToFilter + ".txt";
+
+        try {
+            System.out.println("Creating a list of cars of the given brand: " + brandToFilter);
+            FileWriter fileWriter = new FileWriter(listFilePath);
+            fileWriter.write("List of Cars of a given brand: " + brandToFilter);
+            fileWriter.write("\n-------------------------------\n");
+
+            for (Car car : obj) {
+                String carBrand = car.make.toLowerCase();
+                if (carBrand.equals(brandToFilter.toLowerCase())) {
+                    
+                    fileWriter.write("ID: " + car.id + "\n");
+                    fileWriter.write("Make: " + car.make + "\n");
+                    fileWriter.write("Model: " + car.model + "\n");
+                    fileWriter.write("Manufacture Year: " + car.manufacture_year + "\n");
+                    fileWriter.write("Color: " + car.color + "\n");
+                    fileWriter.write("Price: " + car.price + "\n");
+                    fileWriter.write("Registration Number: " + car.registration_number + "\n");
+                    fileWriter.write("-------------------------------\n");
+                }
+            }
+
+            fileWriter.close();
+            System.out.println("List of cars saved to: " + listFilePath);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}
\ No newline at end of file
diff --git a/newnew/Main2.java b/newnew/Main2.java
new file mode 100644
index 0000000..4a562ea
--- /dev/null
+++ b/newnew/Main2.java
@@ -0,0 +1,68 @@
+import java.io.*;
+
+class Car {
+    int id;
+    String make;
+    String model;
+    int manufacture_year;
+    String color;
+    int price;
+    String registration_number;
+
+    public Car(int id, String make, String model, int manufacture_year, String color, int price, String registration_number) {
+        this.id = id;
+        this.make = make;
+        this.model = model;
+        this.manufacture_year = manufacture_year;
+        this.color = color;
+        this.price = price;
+        this.registration_number = registration_number;
+    }
+}
+
+public class Main2 {
+    public static void main(String[] args) {
+        Car[] obj = {
+                new Car(1,"Mercedes","Sedan",1995,"Grey",2500,"DL3C2001"),
+                new Car(2,"BMW","Sedan",2005,"White",5500,"DL2C9898"),
+                new Car(3,"Mercedes","SUV",2010,"White",7000,"DL2C2000"),
+                new Car(4,"Bugatti","Coupe",2016,"Red",592500,"DL4C2041"),
+                new Car(5,"AUDI","Coupe",2022,"Black",72500,"DL6C8451"),
+                new Car(6,"Mercedes","Convertible",2015,"Grey",152500,"DL3C6666"),
+                new Car(7,"Porsche","Coupe",2015,"White",102500,"DL3C6333"),
+                new Car(8,"AUDI","Sedan",2001,"Black",12500,"DL3C8501"),
+                new Car(9,"AUDI","Hatchback",2005,"White",4000,"DLAC2581"),
+                new Car(10,"BMW","Sedan",1996,"Pink",2000,"BH0C2052"),
+                new Car(11,"BMW","SUV",2016,"Blue",20010,"BH0C0001"),
+        };
+
+        String modelToFilter = "Sedan";
+        int yearsThreshold = 10; // Cars used for more than 10 years
+        String listFilePath = "List_of_Cars_of_" + modelToFilter + "_more_than_" + yearsThreshold + "_years.txt";
+
+        try {
+            System.out.println("Creating a list of cars of the given model used for more than " + yearsThreshold + " years: " + modelToFilter);
+            FileWriter fileWriter = new FileWriter(listFilePath);
+            fileWriter.write("List of Cars of a given model used for more than " + yearsThreshold + " years: " + modelToFilter);
+            fileWriter.write("\n-------------------------------\n");
+
+            for (Car car : obj) {
+                if (car.model.equalsIgnoreCase(modelToFilter) && (2023 - car.manufacture_year > yearsThreshold)) {
+                    fileWriter.write("ID: " + car.id + "\n");
+                    fileWriter.write("Make: " + car.make + "\n");
+                    fileWriter.write("Model: " + car.model + "\n");
+                    fileWriter.write("Manufacture Year: " + car.manufacture_year + "\n");
+                    fileWriter.write("Color: " + car.color + "\n");
+                    fileWriter.write("Price: " + car.price + "\n");
+                    fileWriter.write("Registration Number: " + car.registration_number + "\n");
+                    fileWriter.write("-------------------------------\n");
+                }
+            }
+
+            fileWriter.close();
+            System.out.println("List of cars saved to: " + listFilePath);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}
diff --git a/newnew/Main3.java b/newnew/Main3.java
new file mode 100644
index 0000000..7c089a2
--- /dev/null
+++ b/newnew/Main3.java
@@ -0,0 +1,73 @@
+import java.io.*;
+
+class Car {
+    int id;
+    String make;
+    String model;
+    int manufacture_year;
+    String color;
+    int price;
+    String registration_number;
+
+    public Car(int id, String make, String model, int manufacture_year, String color, int price, String registration_number) {
+        this.id = id;
+        this.make = make;
+        this.model = model;
+        this.manufacture_year = manufacture_year;
+        this.color = color;
+        this.price = price;
+        this.registration_number = registration_number;
+    }
+}
+
+public class Main3 {
+    public static void main(String[] args) {
+        Car[] obj = {
+                new Car(1, "Mercedes", "Sedan", 1995, "Grey", 2500, "DL3C2001"),
+                new Car(2, "BMW", "Sedan", 2005, "White", 5500, "DL2C9898"),
+                new Car(3, "Mercedes", "SUV", 2010, "White", 7000, "DL2C2000"),
+                new Car(4, "Bugatti", "Coupe", 2016, "Red", 592500, "DL4C2041"),
+                new Car(5, "AUDI", "Coupe", 2022, "Black", 72500, "DL6C8451"),
+                new Car(6, "Mercedes", "Convertible", 2015, "Grey", 152500, "DL3C6666"),
+                new Car(7, "Porsche", "Coupe", 2015, "White", 102500, "DL3C6333"),
+                new Car(8, "AUDI", "Sedan", 2001, "Black", 12500, "DL3C8501"),
+                new Car(9, "AUDI", "Hatchback", 2005, "White", 4000, "DLAC2581"),
+                new Car(10, "BMW", "Sedan", 1996, "Pink", 2000, "BH0C2052"),
+                new Car(11, "BMW", "SUV", 2016, "Blue", 20710, "BH0C0001"),
+                new Car(12, "Toyota", "SUV", 2000, "Blue", 20008, "BH0C0411"),
+                new Car(13, "Toyota", "SUV", 2016, "Black", 40010, "BH0C0002"),
+                new Car(14, "AUDI", "Hatchback", 2000, "White", 20010, "BH0C0003"),
+        };
+
+        int yearToFilter = 2000;
+        int priceThreshold = 5000; // Cars with price higher than 5000
+        String listFilePath = "List_of_Cars_manufactured_in_" + yearToFilter + "_price_higher_than_" + priceThreshold + ".txt";
+
+        try {
+            System.out.println("Creating a list of cars manufactured in " + yearToFilter +
+                    " with price higher than " + priceThreshold);
+            FileWriter fileWriter = new FileWriter(listFilePath);
+            fileWriter.write("List of Cars manufactured in " + yearToFilter +
+                    " with price higher than " + priceThreshold);
+            fileWriter.write("\n-------------------------------\n");
+
+            for (Car car : obj) {
+                if (car.manufacture_year == yearToFilter && car.price > priceThreshold) {
+                    fileWriter.write("ID: " + car.id + "\n");
+                    fileWriter.write("Make: " + car.make + "\n");
+                    fileWriter.write("Model: " + car.model + "\n");
+                    fileWriter.write("Manufacture Year: " + car.manufacture_year + "\n");
+                    fileWriter.write("Color: " + car.color + "\n");
+                    fileWriter.write("Price: " + car.price + "\n");
+                    fileWriter.write("Registration Number: " + car.registration_number + "\n");
+                    fileWriter.write("-------------------------------\n");
+                }
+            }
+
+            fileWriter.close();
+            System.out.println("List of cars saved to: " + listFilePath);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}
diff --git a/task2/prechec/Engine2.java b/task2/prechec/Engine2.java
new file mode 100644
index 0000000..9b6a703
--- /dev/null
+++ b/task2/prechec/Engine2.java
@@ -0,0 +1,162 @@
+package prechec;
+
+class Engine {
+    String Enginematerial;
+    double Uniqueid;
+    int cost;
+
+    public Engine(String Enginematerial, double Uniqueid, int cost) {
+        this.Enginematerial = Enginematerial;
+        this.Uniqueid = Uniqueid;
+        this.cost = cost;
+    }
+
+    public String getEnginematerial() {
+        return Enginematerial;
+    }
+
+    public double getUniqueid() {
+        return Uniqueid;
+    }
+
+    public int getcost() {
+        return cost;
+    }
+}
+
+class CombustionEngine extends Engine {
+    public CombustionEngine(String Enginematerial, double Uniqueid, int cost) {
+        super(Enginematerial, Uniqueid, cost);
+    }
+}
+
+class ElectricEngine extends Engine {
+    public ElectricEngine(String Enginematerial, double Uniqueid, int cost) {
+        super(Enginematerial, Uniqueid, cost);
+    }
+}
+
+class HybridEngine extends Engine {
+    public HybridEngine(String Enginematerial, double Uniqueid, int cost) {
+        super(Enginematerial, Uniqueid, cost);
+    }
+}
+
+class Manufacture {
+    private String Manufacturename;
+    private int yearOfManufacture;
+
+    public Manufacture(String Manufacturename, int yearOfManufacture) {
+        this.Manufacturename = Manufacturename;
+        this.yearOfManufacture = yearOfManufacture;
+    }
+
+    public String getManufacturename() {
+        return Manufacturename;
+    }
+
+    public int getyearOfManufacture() {
+        return yearOfManufacture;
+    }
+}
+
+abstract class Vehicle {
+    private Manufacture manufacture;
+    private Engine engine;
+
+    public Vehicle(Manufacture manufacture, Engine engine) {
+        this.manufacture = manufacture;
+        this.engine = engine;
+    }
+
+    public Manufacture getManufacture() {
+        return manufacture;
+    }
+
+    public Engine getEngine() {
+        return engine;
+    }
+
+    public abstract void ShowCharacteristics();
+}
+
+class ICEV extends Vehicle {
+    public ICEV(Manufacture manufacture, Engine engine) {
+        super(manufacture, engine);
+    }
+
+    public void ShowCharacteristics() {
+        System.out.println("Internal Combustion Engine Vehicle (ICEV)");
+        System.out.println("Manufacture Name: " + getManufacture().getManufacturename());
+        System.out.println("Year Of Manufacture: " + getManufacture().getyearOfManufacture());
+        System.out.println("Engine Material: " + getEngine().getEnginematerial());
+        System.out.println("Engine Unique ID : " + getEngine().getUniqueid());
+        System.out.println("Engine Cost: " + getEngine().getcost());
+    }
+}
+
+class BEV extends Vehicle {
+    public BEV(Manufacture manufacture, Engine engine) {
+        super(manufacture, engine);
+    }
+
+    public void ShowCharacteristics() {
+        System.out.println("Battery Electric Vehicle (BEV)");
+        System.out.println("Manufacture Name: " + getManufacture().getManufacturename());
+        System.out.println("Year Of Manufacture: " + getManufacture().getyearOfManufacture());
+        System.out.println("Engine Material: " + getEngine().getEnginematerial());
+        System.out.println("Engine Unique ID : " + getEngine().getUniqueid());
+        System.out.println("Engine Cost: " + getEngine().getcost());
+    }
+}
+
+class HybridV extends Vehicle {
+    public HybridV(Manufacture manufacture, Engine engine) {
+        super(manufacture, engine);
+    }
+
+    public void ShowCharacteristics() {
+        System.out.println("Hybrid Vehicle (HybridV)");
+        System.out.println("Manufacture Name: " + getManufacture().getManufacturename());
+        System.out.println("Year Of Manufacture: " + getManufacture().getyearOfManufacture());
+        System.out.println("Engine Material: " + getEngine().getEnginematerial());
+        System.out.println("Engine Unique ID : " + getEngine().getUniqueid());
+        System.out.println("Engine Cost: " + getEngine().getcost());
+    }
+}
+
+public class Engine2 {
+    public static void main(String[] args) {
+        Manufacture porsche = new Manufacture("Porsche", 2015);
+        Manufacture audi = new Manufacture("Audi", 2023);
+        Manufacture suzuki = new Manufacture("Suzuki", 2022);
+        Manufacture kia = new Manufacture("KIA", 2016);
+
+        Engine iceEngine = new Engine("Steel", 134.0, 23400);
+        Engine electricEngine = new Engine("Copper", 321, 12005);
+        Engine manualEngine = new Engine("Zinc", 2321.0, 123059);
+
+        ICEV icev = new ICEV(porsche, iceEngine);
+        BEV bev = new BEV(porsche, electricEngine);
+        HybridV hybridv = new HybridV(porsche, manualEngine);
+
+        ICEV icev1 = new ICEV(audi, iceEngine);
+        BEV bev1 = new BEV(audi, electricEngine);
+        HybridV hybridv1 = new HybridV(audi, manualEngine);
+
+        ICEV icev2 = new ICEV(suzuki, iceEngine);
+        BEV bev2 = new BEV(suzuki, electricEngine);
+        HybridV hybridv2 = new HybridV(suzuki, manualEngine);
+
+        ICEV icev3 = new ICEV(kia, iceEngine);
+        BEV bev3 = new BEV(kia, electricEngine);
+        HybridV hybridv3 = new HybridV(kia, manualEngine);
+
+        Vehicle[] vehicles = {icev, bev, hybridv, icev1, bev1, hybridv1, icev2, bev2, hybridv2, icev3, bev3, hybridv3};
+
+        for (Vehicle vehicle : vehicles) {
+            vehicle.ShowCharacteristics();
+            System.out.println();
+        }
+    }
+}
\ No newline at end of file
diff --git a/task2/prechec/output.txt b/task2/prechec/output.txt
new file mode 100644
index 0000000..c1cb2bb
--- /dev/null
+++ b/task2/prechec/output.txt
@@ -0,0 +1,83 @@
+Internal Combustion Engine Vehicle (ICEV)
+Manufacture Name: Porsche
+Year Of Manufacture: 2015
+Engine Material: Steel
+Engine Unique ID : 134.0
+Engine Cost: 23400
+
+Battery Electric Vehicle (BEV)
+Manufacture Name: Porsche
+Year Of Manufacture: 2015
+Engine Material: Copper
+Engine Unique ID : 321.0
+Engine Cost: 12005
+
+Hybrid Vehicle (HybridV)
+Manufacture Name: Porsche
+Year Of Manufacture: 2015
+Engine Material: Zinc
+Engine Unique ID : 2321.0
+Engine Cost: 123059
+
+Internal Combustion Engine Vehicle (ICEV)
+Manufacture Name: Audi
+Year Of Manufacture: 2023
+Engine Material: Steel
+Engine Unique ID : 134.0
+Engine Cost: 23400
+
+Battery Electric Vehicle (BEV)
+Manufacture Name: Audi
+Year Of Manufacture: 2023
+Engine Material: Copper
+Engine Unique ID : 321.0
+Engine Cost: 12005
+
+Hybrid Vehicle (HybridV)
+Manufacture Name: Audi
+Year Of Manufacture: 2023
+Engine Material: Zinc
+Engine Unique ID : 2321.0
+Engine Cost: 123059
+
+Internal Combustion Engine Vehicle (ICEV)
+Manufacture Name: Suzuki
+Year Of Manufacture: 2022
+Engine Material: Steel
+Engine Unique ID : 134.0
+Engine Cost: 23400
+
+Battery Electric Vehicle (BEV)
+Manufacture Name: Suzuki
+Year Of Manufacture: 2022
+Engine Material: Copper
+Engine Unique ID : 321.0
+Engine Cost: 12005
+
+Hybrid Vehicle (HybridV)
+Manufacture Name: Suzuki
+Year Of Manufacture: 2022
+Engine Material: Zinc
+Engine Unique ID : 2321.0
+Engine Cost: 123059
+
+Internal Combustion Engine Vehicle (ICEV)
+Manufacture Name: KIA
+Year Of Manufacture: 2016
+Engine Material: Steel
+Engine Unique ID : 134.0
+Engine Cost: 23400
+
+Battery Electric Vehicle (BEV)
+Manufacture Name: KIA
+Year Of Manufacture: 2016
+Engine Material: Copper
+Engine Unique ID : 321.0
+Engine Cost: 12005
+
+Hybrid Vehicle (HybridV)
+Manufacture Name: KIA
+Year Of Manufacture: 2016
+Engine Material: Zinc
+Engine Unique ID : 2321.0
+Engine Cost: 123059
\ No newline at end of file