public class Item implements Comparable
{
private String name, category;
private int quantity;
private double price;
public Item(String nam,String cate,int quant,double pric)
{
name = nam;
category = cate;
quantity = quant;
price = pric;
}
public String toString()
{
return name + ", " + category + ", " + quantity + ", " + price;
}
public boolean equals(Object other)
{
if (price == ((Item)other).getPrice())
return true;
else
return false;
}
public String getName()
{
return name;
}
public String getCategory()
{
return category;
}
public int getQuantity()
{
return quantity;
}
public double getPrice()
{
return price;
}
public int compareTo(Object other)
{
int result;
String otherPrice = ((Item)other).getPrice();
String otherCategory = ((Item)other).getCategory();
if (price.equals(otherPrice)) //Problem Here
result = category.compareTo(otherCategory);
else
result = price.compareTo(otherPrice);
return result;
}
}
-------------------------------
at points //problem here. I get the compile error saying that doubles cannot be dereferenced. I understand that doubles are of primitive type, but I still don't fully understand how to use them in a compareTo method. So after overriding the equals method, how do I use it in the compareTo method? I want to first compare price. If price equals otherPrice, category must be compared next.
