Analyse the imperative program code as shown in Listing 1. Adapt each of the programming methods using functional programming concepts. Your solution code should consider higher-order function, method references, functional interfaces or lambda expression, function pipelining, nullable object, collection of objects and etc.
Analyse the imperative program code as shown in Listing 1. Adapt each of the programming methods using functional programming concepts. Your solution code should consider higher-order function, method references, functional interfaces or lambda expression, function pipelining, nullable object, collection of objects and etc.
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Analyse the imperative program code as shown in Listing 1. Adapt each of the
![Listing 1:- Imperative programing paradigm - code sample:
import java.io.IOException;
import java.nio.file.*;
import java.util.*;
import java.util. regex. Pattern;
public class OrderHandler {
);
) );
}
private static final String FILENAME = "data/delivery item.txt";
List<String> data;
public OrderHandler() {
try {
}
data = Files. readAllLines ( Paths.get( FILENAME ) );
} catch (IOException e) {
e.printStackTrace();
}
//display all order information except the heading text
void print List<List<String>> orderLst ) {
for (int i = 0; i < orderLst.size(); i++) {
System.out.println( orderLst.get(i));
}
}
//collect all orders and split them with '\'
List<List<String>> collect() {
List<List<String>> orderLst = new ArrayList();
for (int i = 0; i < data.size(); i++) {
}
if(!data.get(i).startsWith("PARCELITEM")) {
String[] split = data.get(i).split( Pattern.quote("\\")
orderLst.add( Arrays.asList( split ) );
}
}
return orderLst;
}
//compute the total payment of order placed
double computePaymnt ( List<List<String>> orderLst ) {
double sum = 0;
for (int i = 0; i < orderLst.size(); i++) {
int count
orderLst.get(i).size();
double charge = Double.parseDouble( orderLst.get(i).get(count-1
sum + charge;
}
return sum;
}
//export to order object comprises name and charges only
List<Item> populate( List<List<String>> orderLst ) {
List<Item> items = new ArrayList();
for (int i = 0; i < orderLst.size(); i++) {
int count
orderLst.get(i).size();
String first = orderLst.get(i).get(0);
String last = orderLst.get(i).get(count-1);
items.add(new Item( first, last));
}
return items;](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fde286395-b4c2-4204-997d-9c0d003524f7%2Ff33ff5b2-2784-470f-8ad1-1d5e1d87caa1%2Fm0wk2o7_processed.png&w=3840&q=75)
Transcribed Image Text:Listing 1:- Imperative programing paradigm - code sample:
import java.io.IOException;
import java.nio.file.*;
import java.util.*;
import java.util. regex. Pattern;
public class OrderHandler {
);
) );
}
private static final String FILENAME = "data/delivery item.txt";
List<String> data;
public OrderHandler() {
try {
}
data = Files. readAllLines ( Paths.get( FILENAME ) );
} catch (IOException e) {
e.printStackTrace();
}
//display all order information except the heading text
void print List<List<String>> orderLst ) {
for (int i = 0; i < orderLst.size(); i++) {
System.out.println( orderLst.get(i));
}
}
//collect all orders and split them with '\'
List<List<String>> collect() {
List<List<String>> orderLst = new ArrayList();
for (int i = 0; i < data.size(); i++) {
}
if(!data.get(i).startsWith("PARCELITEM")) {
String[] split = data.get(i).split( Pattern.quote("\\")
orderLst.add( Arrays.asList( split ) );
}
}
return orderLst;
}
//compute the total payment of order placed
double computePaymnt ( List<List<String>> orderLst ) {
double sum = 0;
for (int i = 0; i < orderLst.size(); i++) {
int count
orderLst.get(i).size();
double charge = Double.parseDouble( orderLst.get(i).get(count-1
sum + charge;
}
return sum;
}
//export to order object comprises name and charges only
List<Item> populate( List<List<String>> orderLst ) {
List<Item> items = new ArrayList();
for (int i = 0; i < orderLst.size(); i++) {
int count
orderLst.get(i).size();
String first = orderLst.get(i).get(0);
String last = orderLst.get(i).get(count-1);
items.add(new Item( first, last));
}
return items;
Transcribed Image Text:PARCELITEM\WEIGHT\DELIVERYTIME\RECIPIENT\POSTINGADDR\CONTACT\CASH
PIZZAHUT\500GRAM\12:00PM\STEPHEN\APU AT TPM\0389900000\29.90
KFC\400GRAM\2:00PM\THOMAS\SRIPETALING\038998888\59.90
MACDONAL\300GRAM\8:00PM\MICKEY\SETAPAK\0341414141\59.80
CHICKKENCHOP\250GRAM\7:30PM\JOHNSON\BUKITJALIL\0387878787\19.80
STEAK\150GRAM\8:30PM\HELEN\SERDANG\0322223333\29.80
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