2 Commits
Author SHA1 Message Date
Aeen 10b7fa7b53 fix : add importations + fixing typos 2026-04-30 02:09:23 +03:30
Arefe Talebi a8ac92063e ws03 2026-04-30 01:29:43 +03:30
6 changed files with 196 additions and 91 deletions
+42 -66
View File
@@ -1,20 +1,29 @@
package org;
import org.behavior.Serviceable;
import org.model.ElectricCar;
import org.model.GasCar;
import org.model.SportsCar;
import org.model.Vehicle;
import org.util.VehicleInspector;
public class Main {
public static void main(String[] args) {
// ============================================================
// TODO 1:
// Create one instance of each vehicle type:
// - ElectricCar
// - GasCar
// - SportsCar
//
// Requirements:
// • Use the constructors you created in each class.
// • Provide realistic values (brand, model, year, mileage, etc.).
// • Store them in variables such as:
// ElectricCar tesla = new ElectricCar(...);
ElectricCar tesla = new ElectricCar(
"Tesla", "Model 3", 2022, 5000,
5, 100, 80
);
GasCar toyota = new GasCar(
"Toyota", "Corolla", 2018, 85000,
5, 50, "Petrol"
);
SportsCar ferrari = new SportsCar(
"Ferrari", "F8", 2021, 12000,
2, 60, "Petrol", 2.9
);
// ============================================================
@@ -23,13 +32,7 @@ public class Main {
// ============================================================
// TODO 2:
// Create an array of Vehicle:
// Vehicle[] vehicles = { ... };
//
// This array MUST contain the objects created above.
// This demonstrates **polymorphism** because all different
// subclasses (ElectricCar, GasCar, SportsCar) are stored
// as their parent type (Vehicle).
Vehicle[] vehicles={tesla,toyota,ferrari};
// ============================================================
@@ -38,13 +41,12 @@ public class Main {
// ============================================================
// TODO 3:
// Loop through the Vehicle[] array and:
// • Call v.basicInfo();
// • Print a blank line after each.
//
// Purpose:
// Demonstrate that all subclasses share the same Vehicle
// behavior and can call inherited methods.
for (int i = 0; i < vehicles.length; i++) {
Vehicle v = vehicles[i];
v.basicInfo();
System.out.println();
}
// ============================================================
@@ -53,13 +55,9 @@ public class Main {
// ============================================================
// TODO 4:
// Use VehicleInspector to inspect each vehicle:
//
// VehicleInspector.inspect(v);
//
// Purpose:
// • Demonstrate the use of `instanceof`
// • Show subclassspecific inspection messages
for (int i = 0; i < vehicles.length; i++) {
VehicleInspector.inspect(vehicles[i]);
}
// ============================================================
@@ -68,16 +66,7 @@ public class Main {
// ============================================================
// TODO 5:
// Create an array of Serviceable:
// Serviceable[] serviceables = { ... };
//
// This demonstrates **interfacebased polymorphism**.
// Every Car subtype implements Serviceable.
//
// IMPORTANT:
// • You must cast to Vehicle when needed:
// Vehicle v = (Vehicle) s;
//
Serviceable[] serviceables={tesla,toyota,ferrari};
// ============================================================
@@ -86,24 +75,17 @@ public class Main {
// ============================================================
// TODO 6:
// Loop through the Serviceable[] array:
//
// Steps inside loop:
//
// 1. Cast the current object to Vehicle:
// Vehicle v = (Vehicle) s;
//
// 2. Check:
// if (s.needsService(v)) { ... }
//
// 3. If true:
// - Print a message showing brand + model
// - Call s.performService();
//
// 4. Otherwise:
// - Print that the car does not need service
//
// Add blank lines between each item for readability.
for (int i = 0; i < serviceables.length; i++) {
Serviceable s = serviceables[i];
Vehicle v = (Vehicle) s;
if (s.needsService(v)) {
System.out.println(v.getBrand() + " " + v.getModel() + " needs service");
s.performService();
} else {
System.out.println(v.getBrand() + " " + v.getModel() + " does NOT need service");
}
System.out.println();
}
// ============================================================
@@ -112,15 +94,9 @@ public class Main {
// ============================================================
// TODO 7 (Optional):
// After everything is done, print a final message:
//
// System.out.println("=== Workshop Completed ===");
//
System.out.println("=== Workshop Completed ===");
// ============================================================
}
}
+32 -13
View File
@@ -19,23 +19,42 @@ public abstract class Car extends Vehicle implements Serviceable {
double mileage, int seats) {
// TODO: Call super constructor
super(brand,model,year,mileage);
this.seats = seats;
}
// TODO: Override getEnergyType() → return "Unknown"
// TODO: Override showDetails()
// Print brand, model, year, mileage, and number of seats
/*
* Implement Serviceable methods:
*
* needsService(Vehicle v):
* - Check the mileage of the current car
* - If mileage > 10000 return true
* - Otherwise return false
*
* performService():
* - Print: "General car service completed"
*/
@java.lang.Override
public String getEnergyType() {
return "Unknown";
}
// TODO: Override showDetails()
@java.lang.Override
public void showDetails() {
System.out.println(
getYear() + " " +getBrand() +" " +getModel()+" | Mileage: " + getMileage() + " | Seats: " + seats
);
}
//needService
@java.lang.Override
public boolean needsService(Vehicle v) {
if (v.getMileage() > 10000) {
return true;
} else {
return false;
}
}
//performanceService
@java.lang.Override
public void performService(){
System.out.println("General car service completed");
}
}
+41 -4
View File
@@ -28,12 +28,49 @@ public class ElectricCar extends Car implements Chargeable {
}
// TODO: Override getEnergyType() → return "Electric"
@java.lang.Override
public String getEnergyType() {
return "Electric";
}
// TODO: Override showDetails()
// Call super.showDetails()
// Print battery capacity and charge level
@java.lang.Override
public void showDetails() {
super.showDetails();
System.out.println(
"Battery:" + batteryCapacity + "| Charge Level:" + chargeLevel
);
}
// TODO: Implement charge(double amount)
// Validate negative
// Cap at 100
@java.lang.Override
public void charge(double amount) {
if (amount < 0) {
System.out.println("Error:charge amount cannot be negative");
} else {
chargeLevel += amount;
if (chargeLevel > 100) {
chargeLevel = 100;
}
}
}
@java.lang.Override
public boolean needsService(Vehicle v) {
if (getMileage() > 8000) {
return true;
} else {
return false;
}
}
@java.lang.Override
public void performService() {
System.out.println("Battery system checked");
chargeLevel = 100;
}
}
+39 -4
View File
@@ -29,11 +29,46 @@ public class GasCar extends Car implements Refuelable {
// TODO: Override getEnergyType() → return fuelType + " (Gas)"
@java.lang.Override
public String getEnergyType() {
return fuelType + " (Gas)";
}
// TODO: Implement refuel(double amount)
// Validate amount
// Cap at 100
public void refuel(double amount) {
if (amount < 0) {
System.out.println("Error: fuel amount cannot be negative");
} else {
fuelLevel += amount;
if (fuelLevel > 100) {
fuelLevel = 100;
}
}
}
// TODO: Override showDetails()
// Call super.showDetails()
// Print fuel level and fuel type
@java.lang.Override
public void showDetails() {
super.showDetails();
System.out.println(
"Fuel Type: " + fuelType + " | Fuel Level: " + fuelLevel
);
}
@java.lang.Override
public boolean needsService(Vehicle v) {
if (v.getMileage()>12000){
return true;
}else {
return false;
}
}
@java.lang.Override
public void performService() {
System.out.println("Engine oil changed");
fuelLevel=100;
}
}
+18 -2
View File
@@ -25,6 +25,22 @@ public class SportsCar extends GasCar {
}
// TODO: Override showDetails()
// Call super.showDetails()
// Print acceleration time
@java.lang.Override
public void showDetails() {
super.showDetails();
System.out.println(
"0-100 km/h: " +zeroToHundred+"seconds"
);
}
@java.lang.Override
public void performService() {
System.out.println("High-performance brake system checked");
}
@java.lang.Override
public String getEnergyType() {
return super.getEnergyType();
}
}
+24 -2
View File
@@ -22,11 +22,33 @@ public abstract class Vehicle {
// TODO: Create getters for all fields
public String getBrand() {
return brand;
}
public String getModel() {
return model;
}
public int getYear() {
return year;
}
public double getMileage() {
return mileage;
}
// TODO: Implement addMileage(double km)
// If km is negative → print error
// Otherwise increase mileage
public void addMileage(double km) {
if (km <0){
System.out.println("Error:mileage cannot be negative");
} else {
mileage+= km;
}
}
// TODO: Declare abstract method getEnergyType()
public abstract String getEnergyType();
public void basicInfo() {
System.out.println(