/*
* 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.lesson03;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Scanner;
/**
*
* @author diepvan
*/
public class Main {
static ArrayList<Product> products = new ArrayList<>();
static Scanner scan = new Scanner(System.in);
public static void main(String[] args) {
int choose;
do {
showMenu();
choose = Integer.parseInt(scan.nextLine());
switch (choose) {
case 1:
input();
break;
case 2:
display();
break;
case 3:
sort();
break;
case 4:
System.out.println("Thoat!!!");
break;
default:
System.out.println("Nhap sai!!!");
}
} while(choose != 4);
}
static void showMenu() {
System.out.println("1. Nhap N san pham");
System.out.println("2. Hien thi thong tin");
System.out.println("3. Sap xep theo gia & hien thi");
System.out.println("4. Thoat");
System.out.println("Chon: ");
}
private static void input() {
System.out.println("Nhap so san pham can them: ");
int n = Integer.parseInt(scan.nextLine());
// Product p = new Product(); Cach 2
Product p; //Cach 3
for (int i = 0; i < n; i++) {
// Product p = new Product(); -> cach 1
p = new Product();
p.input();
products.add(p);
}
// Product p = new Product();
// p.name = "A";
// p.display();
// Product p3 = p;
//
// Product p2 = new Product();
// p2.display();
//
// p = new Product();
// p.name = "C";
// p.display();
//
// System.out.println(p.name + ", " + p3.name);
}
private static void display() {
System.out.println("Danh sach san pham");
for (int i = 0; i < products.size(); i++) {
products.get(i).display();
}
System.out.println("Danh sach san pham");
for (Product product : products) {
product.display();
}
}
private static void sort() {
Collections.sort(products, new Comparator<Product>() {
@Override
public int compare(Product o1, Product o2) {
if(o1.price > o2.price) {
return 1;
}
return -1;
}
});
display();
}
}
/*
* 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.lesson03;
import java.util.Scanner;
/**
*
* @author diepvan
*/
public class People {
String name;
String cccd;
String address;
public People() {
}
public People(String name, String cccd, String address) {
this.name = name;
this.cccd = cccd;
this.address = address;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getCccd() {
return cccd;
}
public void setCccd(String cccd) {
this.cccd = cccd;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public void input() {
Scanner scan = new Scanner(System.in);
System.out.println("Nhap ten: ");
name = scan.nextLine();
System.out.println("Nhap cccd: ");
cccd = scan.nextLine();
System.out.println("Nhap dia chi: ");
address = scan.nextLine();
}
public void display() {
System.out.println(name + ", " + cccd + ", " + address);
}
public void test1() {
System.out.println("Hello");
}
public void test2() {
System.out.println("Hello > " + name);
}
}
/*
* 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.lesson03;
import java.util.Scanner;
/**
*
* @author diepvan
*/
public class Product {
protected String name;
private String manufacturerName;
public float price;
float discount;
public Product() {
}
public Product(String name, String manufacturerName, float price) {
this.name = name;
this.manufacturerName = manufacturerName;
this.price = price;
}
public void input() {
Scanner scan = new Scanner(System.in);
System.out.println("Nhap ten: ");
name = scan.nextLine();
System.out.println("Nhap nha san xuat: ");
manufacturerName = scan.nextLine();
System.out.println("Nhap gia ban: ");
price = Float.parseFloat(scan.nextLine());
}
public void display() {
System.out.println("Ten = " + name + ", nha san xuat = " + manufacturerName + ", gia = " + price);
}
public void display(String msg) {
System.out.println("Thong diep > " + msg);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getManufacturerName() {
return manufacturerName;
}
public void setManufacturerName(String manufacturerName) {
this.manufacturerName = manufacturerName;
}
public float getPrice() {
return price;
}
public void setPrice(float price) {
if(price < 0) {
System.err.println("Yeu cau price >= 0");
} else {
this.price = price;
}
}
}
/*
* 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.lesson03;
import java.util.Scanner;
/**
*
* @author diepvan
*/
public class Student extends People{
String email;
String rollno;
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getRollno() {
return rollno;
}
public void setRollno(String rollno) {
this.rollno = rollno;
}
@Override
public void input() {
super.input();
Scanner scan = new Scanner(System.in);
// System.out.println("Nhap ten: ");
// name = scan.nextLine();
//
// System.out.println("Nhap cccd: ");
// cccd = scan.nextLine();
//
// System.out.println("Nhap dia chi: ");
// address = scan.nextLine();
System.out.println("Nhap email: ");
email = scan.nextLine();
System.out.println("Nhap msv: ");
rollno = scan.nextLine();
}
@Override
public void display() {
System.out.println(name + ", " + cccd + ", " + address + ", " + email + ", " + rollno);
}
public void learning() {
System.out.println("Hoc ...");
}
}
/*
* 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.lesson03;
/**
*
* @author diepvan
*/
public class Test {
public static void main(String[] args) {
Product p = new Product();
p.price = -50;
// p.setPrice(50);
p.name = "Xin chao";
// p.manufacturerName = "ABC";
System.out.println(p.getPrice());
}
}
/*
* 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.lesson03;
/**
*
* @author diepvan
*/
public class Test3 {
public static void main(String[] args) {
People people = new People();
// people.input();
people.name = "A";
Student std2 = new Student();
std2.name = "C";
Student std = new Student();
// std.input();
std.name = "B";
System.out.println(people.name);
System.out.println(std.name);
System.out.println(std2.name);
people.test1();
std.test1();
std2.test1();
people.test2();
std.test2();
std2.test2();
std.learning();
people.display();
std.display();
people.input();
std.input();
}
}
/*
* 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.lesson03;
/**
*
* @author diepvan
*/
public class Test4 {
public static void main(String[] args) {
//Exception
//logic
int x = 6;
int y = 0;
try {
int z = x / y;
int k = 10;
System.out.println(z);
} catch(ArithmeticException e) {
e.printStackTrace();
}
int t[] = {1, 10};
System.out.println(t[0]);
// Product p = null;
Product p = new Product();
p.name = "ABC";
System.out.println(p.name);
//Thu vien ben thu 3
//System
try {
Product p2 = null;
p2.name = "123";
} catch(Exception e) {
e.printStackTrace();
} finally {
System.out.println("Xu ly cuoi cung");
}
System.out.println("AAAAa");
}
}
/*
* 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.lesson03.sub;
import com.gokisoft.lesson03.Product;
/**
*
* @author diepvan
*/
public class Test2 {
public static void main(String[] args) {
Product p = new Product();
p.price = -50;
// p.name = "Xin chao";
// p.manufacturerName = "ABC";
System.out.println(p.getPrice());
}
}
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