I have a class Item, which implements Comparable, and has a compareTo method. I want to compare the object o to other Items. I casted o to Item.
In a separate class, Inventory, I have a method for inserting items into the inventory. But I only want to insert if their product numbers are different. So I try to call the compareTo() method to compare item numbers but get a stackoverflow error.
I've tried p.compareTo(iter.next), because I want it to cycle through all of the items in the list. Sorry the formatting isn't perfect. first post here.
public class item{
public int compareTo(Object o){
result = compareTo((Product)o);
if (result < 0){
return -1;
}
else if (result == 0){
return 0;
}
else{
return 1;
}
}
}
public class ProductInventory extends Product {
private void insert(Product p){
Iterator iter = list.iterator();
if (list.size() == 0) {
list.addFirst(p);
}
while(iter.hasNext()) {
p.compareTo(iter.next());
//if (p.getNumber() != iter.next().getNumber()) {
System.out.print("RESULT:" + result);
if (result != 0) {
list.addFirst(p);
}
else {
System.out.print("DUPLICATE");
}
iter.next();
}
}
I want it to print duplicate if result = 0 (the numbers are the same), otherwise add it to list.
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