Exam - Kiểm tra 60 phút lập trình OOP - Quản lý thiết bị máy tính - Lập trình OOP

#Computer.java

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package com.gokisoft.lesson08.bt2208;

import java.util.Scanner;

/**
 *
 * @author diepvan
 */
public class Computer extends Device{
    String cpu;
    String ram;

    @Override
    public void input() {
        super.input();
        
        Scanner scan = new Scanner(System.in);
        System.out.println("Nhap CPU: ");
        cpu = scan.nextLine();
        System.out.println("Nhap RAM: ");
        ram = scan.nextLine();
    }

    public String getCpu() {
        return cpu;
    }

    public void setCpu(String cpu) {
        this.cpu = cpu;
    }

    public String getRam() {
        return ram;
    }

    public void setRam(String ram) {
        this.ram = ram;
    }

    @Override
    public String toString() {
        return super.toString() + ", cpu=" + cpu + ", ram=" + ram;
    }
    
    
}

#Device.java

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package com.gokisoft.lesson08.bt2208;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author diepvan
 */
public class Device {
    int id;
    String name;
    String manufacturer;
    Date importedDate;
    
    public void input() {
        Scanner scan = new Scanner(System.in);
        
        System.out.println("Nhap ID: ");
        id = Integer.parseInt(scan.nextLine());
        System.out.println("Nhap ten: ");
        name = scan.nextLine();
        System.out.println("Nhap nsx: ");
        manufacturer = scan.nextLine();
        System.out.println("Nhap ngay (dd/MM/yyyy):");
        String importedDateStr = scan.nextLine();
        
        try {  
            importedDate = new SimpleDateFormat("dd/MM/yyyy").parse(importedDateStr);
        } catch (ParseException ex) {
            Logger.getLogger(Device.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    public void display() {
        System.out.println(this);
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getManufacturer() {
        return manufacturer;
    }

    public void setManufacturer(String manufacturer) {
        this.manufacturer = manufacturer;
    }

    public Date getImportedDate() {
        return importedDate;
    }

    public void setImportedDate(Date importedDate) {
        this.importedDate = importedDate;
    }

    @Override
    public String toString() {
        return "id=" + id + ", name=" + name + ", manufacturer=" + manufacturer + ", importedDate=" + importedDate;
    }
    
    
}

#Main.java

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package com.gokisoft.lesson08.bt2208;

import java.util.Scanner;

/**
 *
 * @author diepvan
 */
public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        Device[] list = new Device[5];
        int choose;
        
        //Cau 1:
        for (int i = 0; i < 5; i++) {
            showDeviceFactory();
            choose = Integer.parseInt(scan.nextLine());
            
            switch (choose) {
                case 1:
                    list[i] = new Computer();
                    break;
                default:
                    list[i] = new Monitor();
                    break;
            }
            
            list[i].input();
        }
        
        //Cau 2:
        System.out.println("Danh sach thiet bi");
        for (Device device : list) {
            device.display();
        }
        
        //Cau 3:
        int computerCount = 0;
        for (Device device : list) {
            if(device instanceof Computer) {
                computerCount++;
            }
        }
        System.out.println("So computer: " + computerCount);
        
        //Cau 4:
        int monitorCount = 0;
        for (Device device : list) {
            if(device instanceof Monitor) {
                monitorCount++;
            }
        }
        System.out.println("So monitor: " + monitorCount);
        
        //Cau 5:
        System.out.println("Thoat!!!");
    }
    
    static void showDeviceFactory() {
        System.out.println("1. Computer");
        System.out.println("2. Monitor");
        System.out.println("Chon: ");
    }
}

#Monitor.java

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package com.gokisoft.lesson08.bt2208;

import java.util.Scanner;

/**
 *
 * @author diepvan
 */
public class Monitor extends Device{
    String size;
    
    @Override
    public void input() {
        super.input();
        
        Scanner scan = new Scanner(System.in);
        System.out.println("Nhap kich thuoc: ");
        size = scan.nextLine();
    }

    public String getSize() {
        return size;
    }

    public void setSize(String size) {
        this.size = size;
    }

    @Override
    public String toString() {
        return super.toString() + ", size=" + size;
    }
    
    
}