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iren [92.7K]
3 years ago
9

Arrays enable the representation of a number of similar items (in terms of their datatypes). They represent these items in an or

dered list. Consider the features of arrays and respond to the following: In what programming situations would the use of an array be beneficial? What situations would not warrant the use of an array? Provide an example explaining why? Imagine a programming structure that would deal with these problems. What characteristics should the structure possess? Research the concept of class ArrayList in Java. Describe the advantage of using the ArrayList class over an array. Also discuss in what circumstances you should use one over the other. Please use examples to justify your answers.
Computers and Technology
1 answer:
frutty [35]3 years ago
4 0

Answer:

Check the explanation

Explanation:

When there is a need to initialize a lot of element of same data types,tht time we use arrays.

We have to use array  whenever it involves simple programs and cases,

dx:saving age of 100 childrans of sametype

When all the ele,ents are of different data type,we hould not use arrays,even when we initialize at runtime,we dont need arrays.i.e when size is not fixed

Linked list can be used instead of arrays

ArrayList:It provides methods for creating, searching, manipulating, and sorting arrays, thereby serving as the base class for all arrays in the common language runtime.

Advantages:

Readymade properties availaible ,so lot of writing and remembering the code can be avoided.

Provide the reference for other arrays

Helps in faster execution

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Write a Java program to accept an item's name and price from the user and output them to the console
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Answer:

// program in java.

// package

import java.util.*;

// class definition

class Main

{// main method of the class

public static void main (String[] args) throws java.lang.Exception

{

   try{

    // scanner object to read inputs

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}

Explanation:

Read name & price of item from user and assign it to variables "name" & "price" respectively with scanner object.Then print the name and price of item .

Output:

Enter item's name: Apple                                                                                                  

Enter item's price: 100                                                                                                    

name of item is:Apple                                                                                                      

price of item is:100.0

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xenn [34]

Answer:

a

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3 years ago
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