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addGrocery public void addGrocery (Grocery groc) Adds the given Grocery parameter to the grocList. Parameters: groc - Grocery object to be added to the ArrayList removeGrocery public void removeGrocery (String grocName) Loops through the grocList until the given grocName is found then it is removed from the list. Grocery.getName() will prove useful. Parameters: grocName - Name of Grocery object to remove. toString public String toString() Loops through the grocList ArrayList and appends the toString() of each Grocery object to the strList variable. Using the Grocery.toString() method from the Grocery class will be handy for this method. Each entry will have newline character between them. '\n' Broccoli which costs: $2.99, located in the aisle 12. Cheese which costs: $1.50, located in the aisle 3. Rop Tamen which costs: $4.25, located in the aisle 14. Overrides: toString in class Object getAisleGroceries public String getAisleGroceries (int aisle) Loops through the grocList and checks each Grocery object's aisle against the aisle parameter provided. Each Grocery that has the same aisle has its Grocery.toString() added to the aisleString variable, along with a newline character, '\n'. Grocery.getAisle () will come in handy. Parameters: aisle - Int indicating which aisle groceries are being looked for. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 فر فر 12 456 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 import java.util.ArrayList; public class GroceryList { ArrayList grocList = new ArrayList(); public ArrayList getGrocList() { return grocList; } public void addGrocery (Grocery groc) { grocList.add(groc); } /* * Student Self-Explanation: * * * */ public void removeGrocery (String grocName) { for (Grocery g: grocList) { if(false) { //TODO Student grocList.remove(g); break; } public String toString() { String strList = ""; //TODO Student return strList; } public String getAisleGroceries (int aisle) { String aisleString = ""; //TODO Student return aisleString; } public String getTotals() { double priceSum = 0; int calories Sum = 0; for (Grocery g: grocList) { priceSum + g.getPrice();

Sagot :

JunRR

In coding and programming, an array is a collection of items, or data, stored in contiguous memory locations, also known as database systems .

What is an array and example?

  • An array is a collection of similar types of data. For example, if we want to store the names of 100 people then we can create an array of the string type that can store 100 names. String[] array = new String[100]; Here, the above array cannot store more than 100 names.
  • An array is a linear data structure that collects elements of the same data type and stores them in contiguous and adjacent memory locations. Arrays work on an index system starting from 0 to (n-1), where n is the size of the array.
  • Array in C can be defined as a method of clubbing multiple entities of similar type into a larger group. These entities or elements can be of int, float, char, or double data type or can be of user-defined data types too like structures.
  • Arrays are used to implement data structures like a stack, queue, etc. Arrays are used for matrices and other mathematical implementations. Arrays are used in lookup tables in computers. Arrays can be used for CPU scheduling.

There are two types of arrays:

  1. One-Dimensional Arrays.
  2. Multi-Dimensional Arrays.

//importing package java.util.ArrayList to use ArrayList in the program

import java.util.ArrayList;

import java.util.Date;

public class test_array_list {

// Main method

public static void main(String[] args) {

// Create an array list of objects

ArrayList<Object> s = new ArrayList<Object>();

s.add(new Loan());  

s.add(new Date());  

s.add(new String("String class"));

s.add(new Circle());

// Display all the elements in the list by

// invoking the object’s to String() method

for (int element = 0; element < o.size(); element++) {

System.out.println((s.get(element)).toString());

}

}

}

To learn more about Array refer to:

https://brainly.com/question/28061186

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