2. How is accessing the Internet through a home network and public Wi-Fi similar?
1 answer:
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Answer:
Here is the corrected code:
import java.util.*;
public class DebugNine36 { //class name
public static void main(String[] args) { //start of main method
ArrayList<String>products = new ArrayList<String>(); //creates an ArrayList of type String names products
products.add("shampoo"); //add shampoo to product array list
products.add("moisturizer"); //add moisturizer product array list
products.add("conditioner"); //add conditioner product array list
Collections.sort(products); //sort the elements in products array list
display(products); //calls display method by passing products array list
final String QUIT = "quit"; //declares a variable to quit the program
String entry; //declares a variable to hold product/element or quit
Scanner input = new Scanner(System.in); //creates Scanner object
System.out.print("\nEnter a product or " + QUIT + " to quit >> "); //prompts user to enter a product or enter quit to exit
entry = input.nextLine(); //reads the entry value from user
while(!entry.equals("quit")) { //loops until user enters quit
products.add(entry); //adds entry (product) to products array list
Collections.sort(products); //sorts the elements in products array list
display(products); //calls display method by passing products arraylist
System.out.print("\nEnter a product or " + QUIT + " to quit >> "); //keeps prompting user to enter a product or enter quit to exit
entry = input.nextLine(); } } //reads the entry value from user
public static void display(ArrayList products) { // method to display the list of products
System.out.println("\nThe size of the list is " + products.size()); //displays the size of the array list named products
for(int x = 0; x < products.size(); ++x) //iterates through the arraylist products
System.out.println(products.get(x)); } } //displays each item/element in products array list
Explanation:
In the code the following statement are corrected:
1.
ArrayListproducts = new ArrayList();
This gave an error: cannot find symbol
This is corrected to :
ArrayList<String>products = new ArrayList<String>();
2.
products.add(shampoo);
products.add(moisturizer);
products.add(conditioner);
Here shampoo moisturizer and conditioner are String type items that are to be added to the products so these strings have to be enclosed in quotation marks.
This is corrected to :
products.add("shampoo");
products.add("moisturizer");
products.add("conditioner");
3.
display();
This method is called without giving any arguments to this method. The method display takes an ArrayList as argument so it should be passed the arraylist products to avoid error that actual and formal argument lists differ in length .
This is corrected to :
display(products);
The screenshot of output is attached.
