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17/05/2021 02:56:43 PM

Cách sử dụng get và set giá trị cho các thuộc tính trong java

package Book;

import java.util.Scanner;

public class Book {   

    private String tile;

    private String author;

    private int pages;

    private double price;   

    public Book(String tile, String author, int pages, double price) {

        this.tile = tile;

        this.author = author;

        this.pages = pages;

        this.price = price;

    }   

    public Book() {

     }   

    public String getTile() {

        return tile;

    }

    public String getAuthor() {

        return author;

    }

    public int getPages() {

        return pages;

    }   

    public double getPrice() {

        return price;

    }   

    public void setAuthor(String author) {

        this.author = author;

    }   

    public void setTile(String tile) {

        this.tile = tile;

    }   

    public void setPages(int pages) {

        this.pages = pages;

    }   

    public void setPrice(double price) {

        this.price = price;

    }

@Override

    public String toString() {

        return "Book{" + "tile=" + tile + ", author=" + author + ", pages=" + pages + ", price=" + price + '}';

    }

   

    public void updatePrice(double rate) {

        this.price = price * (1 + rate);

    }

   

    public static void main(String[] args) {

        Book b = new Book();

        Scanner scan = new Scanner(System.in);

        System.out.println("Please input the title of book: ");

        b.setTile(scan.nextLine());

        System.out.println("book's author: ");

        b.setAuthor(scan.nextLine());

        System.out.println("book's total pages: ");

        b.setPages(scan.nextInt());

        System.out.println("book's price: ");

        b.setPrice(scan.nextDouble());

        System.out.println("The book's information:"+b.toString());

System.out.println("how much discount?");        b.updatePrice(scan.nextDouble());

        System.out.println("After update price, the book's information :"+b.toString());

       

   }

}

Trương Đình Huy