Java第一次作业纪实，订购产品及咖啡类

水了一点代码，记录一下
Product类

package ProductOrder;

public class Product {
	private String code;
	private String description;
	private double price;
	
	public String getCode() {
		return code;
	}
	public String getDescription() {
		return description;
	}
	public double getPrice() {
		return price;
	}
	public Product() {
		
	}
	public Product(String initialCode,String initialDescription,double initialPrice) {
		this.code = initialCode;
		this.description = initialDescription;
		this.price = initialPrice;
	}
	public boolean equals(Object object) {
		if(object instanceof Product) {
			return ((Product)object).getCode().equals(this.getCode());
		}
		else
			return false;
	}
	public String toString() {
		return code + "_" + description + "_" + price;
	}
}

OrderItem类

package ProductOrder;

public class OrderItem {
	private int quantity;
	private Product product;
	public Product getProduct() {
		return product;
	}
	public int getQuantity() {
		return quantity;
	}
	public void setQuantity(int newQuantity) {
		this.quantity = newQuantity;
	}
	public double getValue() {
		return product.getPrice() * quantity;
	}
	public String toString() {
		return quantity + " " + product.getCode() + " " + product.getPrice();
	}
	public OrderItem(Product initialProduct,int initialQuantity) {
		this.product = initialProduct;
		this.quantity = initialQuantity;
	}
}

Coffee类

package ProductOrder;

public class OrderItem {
	private int quantity;
	private Product product;
	public Product getProduct() {
		return product;
	}
	public int getQuantity() {
		return quantity;
	}
	public void setQuantity(int newQuantity) {
		this.quantity = newQuantity;
	}
	public double getValue() {
		return product.getPrice() * quantity;
	}
	public String toString() {
		return quantity + " " + product.getCode() + " " + product.getPrice();
	}
	public OrderItem(Product initialProduct,int initialQuantity) {
		this.product = initialProduct;
		this.quantity = initialQuantity;
	}
}

CoffeeBrewer类

package ProductOrder;

public class CoffeeBrewer extends Product{
	String model;
	String waterSupply;
	int numberOfCups;
	public CoffeeBrewer(String iniCode,String iniDescription,double iniPrice
			,String iniModel,String iniWaterSupply,int iniNumberOfCups) {
		super(iniCode,iniDescription,iniPrice);
		model = iniModel;
		waterSupply = iniWaterSupply;
		numberOfCups = iniNumberOfCups;
	}
	public String getModel() {
		return model;
	}
	public String getWaterSupply() {
		return waterSupply;
	}
	public int getNumberOfCups() {
		return numberOfCups;
	}
	public String toString() {
		return super.getCode() + "_" + super.getDescription() + "_" + super.getPrice() + "_" 
				+ model + "_" + waterSupply + "_" + numberOfCups;
	}
}

TestProduct类

package ProductOrder;
import java.io.*;
import java.util.*;

public class TestProduct {

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		String str1,str2,str3;
		double dou1 = 0;
		Product pro1 = new Product("001", "Apple", 3.99);
		Product pro2 = new Product("002", "Banana", 5.99);
		Product pro3 = new Product("003", "Canyon", 21.99);
		Product pro4 = new Product("004", "Dove", 6.99);
		Product pro5 = new Product("004", "Eggs", 10.99);
		
		OrderItem bill1 = new OrderItem(pro1, 5);
		OrderItem bill2 = new OrderItem(pro1, 20);
		OrderItem bill3 = new OrderItem(pro2, 25);
		OrderItem bill4 = new OrderItem(pro5, 3);
		OrderItem bill5 = new OrderItem(pro4, 7);
		OrderItem bill6 = new OrderItem(pro1, 0);
		OrderItem bill7 = new OrderItem(pro5, 999);
		OrderItem bill8 = new OrderItem(pro5, 12);
		OrderItem bill9 = new OrderItem(pro2, 2);
		OrderItem bill10 = new OrderItem(pro3, 100);
		
		Coffee cof1 = new Coffee("01","Cappuccino",15.2,"American","Cure","Sweet","Heavy","Small","Oval");
		
		CoffeeBrewer ord1 = new CoffeeBrewer("001","SUNNY",169.99,"Abrasive","PrueWater",3);
		BufferedReader buf = null;//声明 BufferedReader 对象
	    buf = new BufferedReader(new InputStreamReader(System.in));//实例化 BufferedReader
	    String str = null;//接收输入内容
	    System.out.print("请输入新建Product,以“,”分开：");
	    str = buf.readLine();//读取输入内容
	    StringTokenizer st=new StringTokenizer(str,",");
	    str1 = st.nextToken();
	    str2 = st.nextToken();
      str3 = st.nextToken();
        dou1 = Double.parseDouble(str3);
	    Product pro6 = new Product(str1,str2,dou1);
	    if(pro4.equals(pro5)) {
	    	System.out.println("Yes!");
	    }
	    else {
	    	System.out.println("No!");
	    }
		
		System.out.println(bill10);
		System.out.println(cof1);
		System.out.println(pro6);
		System.out.println(ord1.getPrice());
		System.out.println(bill1.getQuantity());
		System.out.println(bill2.getProduct().getDescription());
		
	}

}

本次作业考察了java基础类、类的继承的基础语法，以及tokenizer、bufferreader等库的使用，总体来说难度不大。