Java Basic

Java basic- Overview - Viết chương trình quản lý xe car bằng java

1. Create an interface named `ICar`

Define an interface called ICar that declares the following methods:

calculateTax() → returns a float:
Used to calculate the tax of the car.
calculatePrice() → returns a float:
Used to calculate the total cost (total price) of the car.
getInfo() → returns void:
Used to display the information of the car.

2. Create a class `Car` that implements the `ICar` interface

The Car class should implement all methods from ICar.
Declare the following private fields:


private String name;
private String producer;
private int year;
private int seat;
private float rootPrice;

Requirements:

Create two constructors:
- A default (no-argument) constructor.
- A parameterized constructor that initializes all attributes.
Generate getters and setters for all fields.

Implement methods:

calculateTax()
Calculate the tax based on the number of seats:
- If the car has fewer than 7 seats, then
  tax = rootPrice * 0.6
- Otherwise,
  tax = rootPrice * 0.7
calculatePrice()
Calculate the total price as:
totalPrice = rootPrice + tax
getInfo()
Display the car’s details in the following format:
```
<car name> car produced by <producer> in <year> has <seat> seats 
with the total price of <totalPrice> $.
```
Example:
Ford car produced by Ford in 1997 has 4 seats with the total price of 20000 $.

3. Create a class `LuxuryCar` that extends the `Car` class

Add one new private attribute:


private float specialRate;

Requirements:

Create two constructors:
- A default constructor.
- A parameterized constructor (including inherited attributes and specialRate).
Create getters and setters for specialRate.

Override and overload methods:

Override calculatePrice()
Calculate the total price as:
totalPrice = rootPrice + tax + (rootPrice * specialRate)
Overload calculatePrice(float transportCost)
Add one parameter named transportCost (type float), and calculate:
totalPrice = rootPrice + tax + (rootPrice * specialRate) + transportCost

4. Create a `Test` class

In the `main()` method:

Declare and initialize an instance of LuxuryCar named myLuxuryCar.
Input data from the keyboard:
Read values for name, producer, year, seat, and rootPrice.
- Use exception handling (try-catch) to catch invalid inputs.
Display the car’s information using the getInfo() method.
Calculate the total price when the transportCost is $20,000 using the overloaded calculatePrice(float transportCost) method.
Display the final total price.

✅ Summary:
This exercise helps you practice:

Defining and implementing interfaces in Java.
Using inheritance and method overriding/overloading.
Working with constructors, encapsulation (private fields, getters/setters).
Handling user input and exceptions.
Calculating and displaying object data clearly and logically.

Mục Lục

Java basic- Overview - Viết chương trình quản lý xe car bằng java

1. Create an interface named `ICar`

2. Create a class `Car` that implements the `ICar` interface

Requirements:

Implement methods:

3. Create a class `LuxuryCar` that extends the `Car` class

Requirements:

Override and overload methods:

4. Create a `Test` class

In the `main()` method:

Đăng nhập để làm bài kiểm tra

Chưa có kết quả nào trước đó

Mục Lục

Java basic- Overview - Viết chương trình quản lý xe car bằng java

1. Create an interface named ICar

2. Create a class Car that implements the ICar interface

Requirements:

Implement methods:

3. Create a class LuxuryCar that extends the Car class

Requirements:

Override and overload methods:

4. Create a Test class

In the main() method:

Đăng nhập để làm bài kiểm tra

Chưa có kết quả nào trước đó

1. Create an interface named `ICar`

2. Create a class `Car` that implements the `ICar` interface

3. Create a class `LuxuryCar` that extends the `Car` class

4. Create a `Test` class

In the `main()` method: