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Explanation of Solution
Modified last loop in Listing 7.8:
The last loop in Listing 7.8 is modified by using “for” loop with method “getNumberOfEntries” which is given below:
/* Compute the number of entries in the list using method "getNumberOfEntries" */
int count = toDoList.getNumberOfEntries();
/* Finally display the number of items in list using "for" loop */
for(int position = toDoList.START_POSITION; position <= count; position++)
//Display the list of items
System.out.println(toDoList.getEntryAt(position));
Explanation:
The modified loop is used to display the each item in the list using method “getNumberOfEntries”.
- • First compute the number of entries in the list using method “getNumberOfEntries” and store it to an integer variable “count”.
- • Then display the item one by one in the list by using “for” loop.
Complete code after changing the given loop:
The complete executable code for given program after changing the last loop in Listing 7.8 is given below:
File name: “OneWayNoRepeatsList.java”
public class OneWayNoRepeatsList
{
//Refer the textbook Listing 7.9 of chapter 7.
}
File name: “ListDemo.java” (Listing 7.8)
//Import required package
import java.util.Scanner;
//Define "ListDemo" class
public class ListDemo
{
//Initializes required variable
public static final int MAX_SIZE = 3; //Assumed > 0
//Define main function
public static void main(String[] args)
{
//Create object "toDoList" from "OneWayNoRepeatsList" class
OneWayNoRepeatsList toDoList = new OneWayNoRepeatsList(MAX_SIZE);
//Prompt statement for user
System.out.println("Enter items for the list, when prompted.");
//Initializes Boolean variable
boolean moreEntries = true;
//Assign string variable
String next = null;
//Create object for scanner class
Scanner keyboard = new Scanner(System.in);
//Read an item from user
while (moreEntries && !toDoList...
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Chapter 7 Solutions
Java: An Introduction to Problem Solving and Programming (7th Edition)
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