Cleaning strings
You've extracted product names from your electronics inventory into a list of strings. The product names are messy, and some have leading and trailing spaces, non-letters, multiple spaces, or mixed cases. Clean the product names from your inventory.
This exercise is part of the course
Cleaning Data in Java
Exercise instructions
- Remove leading and trailing spaces from each product name.
- Replace multiple spaces with a single space in the products.
- Convert all product names to lowercase.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
import java.util.Arrays;
import java.util.List;
public class ProductDataExample {
public static void main(String[] args) {
String[] messyProducts = {
"Laptop ", "SMARTPHONE",
"Monitor *(Display)*", " Bluetooth Speaker "
};
Arrays.stream(messyProducts)
// Remove leading and trailing spaces
.map(s -> s.____()
.replaceAll("[^a-zA-Z\\s]", "")
// Replace multiple spaces with a single space
.replaceAll("____", " ")
// Convert to lowercase
.____())
.forEach(System.out::println);
}
}