This commit is contained in:
Arefe Talebi
2026-04-30 01:29:43 +03:30
parent 6cb8f9a8d8
commit a8ac92063e
6 changed files with 192 additions and 91 deletions
+38 -66
View File
@@ -1,20 +1,25 @@
package org; package org;
import org.behavior.Serviceable;
import org.model.Vehicle;
public class Main { public class Main {
public static void main(String[] args) { public static void main(String[] args) {
// ============================================================ // ============================================================
// TODO 1: // TODO 1:
// Create one instance of each vehicle type: ElectricCar tesla = new ElectricCar(
// - ElectricCar "Tesla", "Model 3", 2022, 5000,
// - GasCar 5, 100, 80
// - SportsCar );
// GasCar toyota = new GasCar(
// Requirements: "Toyota", "Corolla", 2018, 85000,
// • Use the constructors you created in each class. 5, 50, "Petrol"
// • Provide realistic values (brand, model, year, mileage, etc.). );
// • Store them in variables such as: SportsCar ferrari = new SportsCar(
// ElectricCar tesla = new ElectricCar(...); "Ferrari", "F8", 2021, 12000,
2, 60, "Petrol", 2.9
);
// ============================================================ // ============================================================
@@ -23,13 +28,7 @@ public class Main {
// ============================================================ // ============================================================
// TODO 2: // TODO 2:
// Create an array of Vehicle: Vehicle[] vehicles={tesla,toyota,ferrari};
// 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).
// ============================================================ // ============================================================
@@ -38,13 +37,12 @@ public class Main {
// ============================================================ // ============================================================
// TODO 3: // TODO 3:
// Loop through the Vehicle[] array and: for (int i = 0; i < vehicles.length; i++) {
// • Call v.basicInfo(); Vehicle v = vehicles[i];
// • Print a blank line after each.
// v.basicInfo();
// Purpose: System.out.println();
// Demonstrate that all subclasses share the same Vehicle }
// behavior and can call inherited methods.
// ============================================================ // ============================================================
@@ -53,13 +51,9 @@ public class Main {
// ============================================================ // ============================================================
// TODO 4: // TODO 4:
// Use VehicleInspector to inspect each vehicle: for (int i = 0; i < vehicles.length; i++) {
// VehicleInspector.inspect(vehicles[i]);
// VehicleInspector.inspect(v); }
//
// Purpose:
// • Demonstrate the use of `instanceof`
// • Show subclassspecific inspection messages
// ============================================================ // ============================================================
@@ -68,16 +62,7 @@ public class Main {
// ============================================================ // ============================================================
// TODO 5: // TODO 5:
// Create an array of Serviceable: Serviceable[] serviceables={tesla,toyota,ferrari};
// Serviceable[] serviceables = { ... };
//
// This demonstrates **interfacebased polymorphism**.
// Every Car subtype implements Serviceable.
//
// IMPORTANT:
// • You must cast to Vehicle when needed:
// Vehicle v = (Vehicle) s;
//
// ============================================================ // ============================================================
@@ -86,24 +71,17 @@ public class Main {
// ============================================================ // ============================================================
// TODO 6: // TODO 6:
// Loop through the Serviceable[] array: for (int i = 0; i < serviceables.length; i++) {
// Serviceable s = serviceables[i];
// Steps inside loop: Vehicle v = (Vehicle) s;
// if (s.needsService(v)) {
// 1. Cast the current object to Vehicle: System.out.println(v.getBrand() + " " + v.getModel() + " needs service");
// Vehicle v = (Vehicle) s; s.performService();
// } else {
// 2. Check: System.out.println(v.getBrand() + " " + v.getModel() + " does NOT need service");
// if (s.needsService(v)) { ... } }
// System.out.println();
// 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.
// ============================================================ // ============================================================
@@ -112,15 +90,9 @@ public class Main {
// ============================================================ // ============================================================
// TODO 7 (Optional): // TODO 7 (Optional):
// After everything is done, print a final message: System.out.println("=== Workshop Completed ===");
//
// System.out.println("=== Workshop Completed ===");
//
// ============================================================ // ============================================================
} }
} }
+32 -13
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@@ -19,23 +19,42 @@ public abstract class Car extends Vehicle implements Serviceable {
double mileage, int seats) { double mileage, int seats) {
// TODO: Call super constructor // TODO: Call super constructor
super(brand,model,year,mileage);
this.seats = seats; this.seats = seats;
} }
// TODO: Override getEnergyType() → return "Unknown" // TODO: Override getEnergyType() → return "Unknown"
// TODO: Override showDetails()
// Print brand, model, year, mileage, and number of seats
/* @java.lang.Override
* Implement Serviceable methods: public string getEnergyType() {
* return "Unknown";
* needsService(Vehicle v): }
* - Check the mileage of the current car
* - If mileage > 10000 return true
* - Otherwise return false // TODO: Override showDetails()
*
* performService(): @java.lang.Override
* - Print: "General car service completed" public void showDetails() {
*/ System.out.println(
getYear() + " " +getBrand() +" " +getModel()+" | Mileage: " + getMileage() + " | Seats: " + seats
);
}
//needService
@java.lang.Override
public boolean needsService() {
if (getMileage() > 10000) {
return true;
} else {
return false;
}
}
//performanceService
@java.lang.Override
public void performaceService(){
System.out.println("General car service completed");
} }
}
+41 -4
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@@ -28,12 +28,49 @@ public class ElectricCar extends Car implements Chargeable {
} }
// TODO: Override getEnergyType() → return "Electric" // TODO: Override getEnergyType() → return "Electric"
@java.lang.Override
public String getEnergyType() {
return "Electric";
}
// TODO: Override showDetails() // TODO: Override showDetails()
// Call super.showDetails() @java.lang.Override
// Print battery capacity and charge level public void showDetails() {
super.showDetails();
System.out.println(
"Battery:" + batteryCapacity + "| Charge Level:" + chargeLevel
);
}
// TODO: Implement charge(double amount) // 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() {
if (getMileage() > 8000) {
return true;
} else {
return false;
}
}
@java.lang.Override
public void performService() {
System.out.println("Battery system checked");
chargeLevel = 100;
}
} }
+39 -4
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@@ -29,11 +29,46 @@ public class GasCar extends Car implements Refuelable {
// TODO: Override getEnergyType() → return fuelType + " (Gas)" // TODO: Override getEnergyType() → return fuelType + " (Gas)"
@java.lang.Override
public string getEnergyType() {
return fuelType + " (Gas)";
}
// TODO: Implement refuel(double amount) // TODO: Implement refuel(double amount)
// Validate amount public void refuel(double amount) {
// Cap at 100 if (amount < 0) {
System.out.println("Error: fuel amount cannot be negative");
} else {
fuelLevel += amount;
if (fuelLevel > 100) {
fuelLevel = 100;
}
}
}
// TODO: Override showDetails() // 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() {
if (getMileage()>12000){
return true;
}else {
return false;
}
}
@java.lang.Override
public void performaceService() {
System.out.println("Engine oil changed");
fuelLevel=100;
}
} }
+18 -2
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@@ -25,6 +25,22 @@ public class SportsCar extends GasCar {
} }
// TODO: Override showDetails() // 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
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@@ -22,11 +22,33 @@ public abstract class Vehicle {
// TODO: Create getters for all fields // 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) // TODO: Implement addMileage(double km)
// If km is negative → print error public void addMileage(double km) {
// Otherwise increase mileage if (km <0){
System.out.println("Error:mileage cannot be negative");
} else {
mileage+= km;
}
}
// TODO: Declare abstract method getEnergyType() // TODO: Declare abstract method getEnergyType()
public abstract string getEnergyType();
public void basicInfo() { public void basicInfo() {
System.out.println( System.out.println(