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16/06/2021 01:59:58 PM

Sử dụng getter và setter trong Java

import java.util.Scanner;

class book {

              private String tile;

              private String author;

              private int pages;

              private double price;

 

              book(String tile, String author, int pages, double price) {

                             this.tile = tile;

                             this.author = author;

                             this.pages = pages;

                             this.price = price;

              }

 

              public book() {

              }

 

              String getTile() {

                             return tile;

              }

 

              String getAuthor() {

                             return author;

              }

 

              int getPages() {

                             return pages;

              }

 

              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;

              }

 

              public String toString() {

                             return "Book{" + "tile=" + this.getTile() + ", author=" + this.getAuthor() +

                                                                                      ", pages=" + this.getPages() + ", price=" + this.getPrice() + '}';

              }

 

              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


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