write a java code Design a class that stores information about products that are
ID: 3893391 • Letter: W
Question
write a java code
Design a class that stores information about products that are sold in a store. Write a class named Item that has (at least) the following member variables:
name: a String that holds the name of the inventory item.
vendor: a String that stores the name of the vendor for the product.
salePrice: a double that stores the current selling price of the item (how much the customer pays to buy it).
costPrice: a double that stores the current cost price of the item (how much the store pays to acquire it).
weight: a double that stores the weight of a single item of this type.
taxable: a boolean field that indicates whether or not tax is charged on the item.
Make sure to choose appropriate access specifiers for the data members and methods in your Item class.
In addition, the class should have the following member methods:
Constructor. The constructor should accept the item’s name, cost price, and selling price as arguments and assign these values to the object's name, costPrice, and salePrice member variables. The constructor should initialize the weight to 1 and taxable to true.
Accessors. Appropriate accessor methods should be created to allow values to be retrieved from an object's name, vendor, salePrice, weight, and taxable member variables.
Mutators. Appropriate mutator methods should be created to allow values to be changed in an object’s weight and taxable fields.
increaseCost. This method should increase the cost price by 1 dollar. This is a void method since it modifies the current state of the object.
profit. This method should accept no parameters and return the profit on the item, which is calculated as the cost price subtracted from the selling price.
Demonstrate the class in a program that creates an Item object. Then increase the cost 3 times by a dollar, calculate the profit and display it on the screen. Call the mutator method that sets the weight to a number you specify. Create several other Item objects and see that the fields have different values.
If your Item class is written properly, the following lines of code should be valid in your main method:
Item chair = new Item("Desk Chair", 30, 55);
//increase cost price by $3.
chair.increaseCost();
chair.increaseCost();
chair.increaseCost();
//display the profit
System.out.println("The chair’s profit is now $" + chair.profit());
//set the chair’s weight to 7 lb
chair.setWeight(7);
Item table = new Item("Picnic Table”, 70, 88);
System.out.println("The table’s profit is now $" + table.profit());
Explanation / Answer
class Item {
private String name;
private String vendor;
private double salePrice;
private double costPrice;
private double weight;
private boolean taxable;
public Item(String name, double costPrice, double salePrice) {
this.name = name;
this.salePrice = salePrice;
this.costPrice = costPrice;
this.weight = 1;
this.taxable = true;
}
/**
* @return the name
*/
public String getName() {
return name;
}
/**
* @param name the name to set
*/
public void setName(String name) {
this.name = name;
}
/**
* @return the vendor
*/
public String getVendor() {
return vendor;
}
/**
* @param vendor the vendor to set
*/
public void setVendor(String vendor) {
this.vendor = vendor;
}
/**
* @return the salePrice
*/
public double getSalePrice() {
return salePrice;
}
/**
* @param salePrice the salePrice to set
*/
public void setSalePrice(double salePrice) {
this.salePrice = salePrice;
}
/**
* @return the costPrice
*/
public double getCostPrice() {
return costPrice;
}
/**
* @param costPrice the costPrice to set
*/
public void setCostPrice(double costPrice) {
this.costPrice = costPrice;
}
/**
* @return the weight
*/
public double getWeight() {
return weight;
}
/**
* @param weight the weight to set
*/
public void setWeight(double weight) {
this.weight = weight;
}
/**
* @return the taxable
*/
public boolean isTaxable() {
return taxable;
}
/**
* @param taxable the taxable to set
*/
public void setTaxable(boolean taxable) {
this.taxable = taxable;
}
public void increaseCost() {
this.costPrice += 1;
}
public double profit() {
return this.salePrice - this.costPrice;
}
}
public class ItemTest {
public static void main(String[] args) {
Item chair = new Item("Desk Chair", 30, 55);
//increase cost price by $3.
chair.increaseCost();
chair.increaseCost();
chair.increaseCost();
//display the profit
System.out.println("The chair’s profit is now $" + chair.profit());
//set the chair’s weight to 7 lb
chair.setWeight(7);
Item table = new Item("Picnic Table", 70, 88);
System.out.println("The table’s profit is now $" + table.profit());
}
}
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.