Ask the user for an account balance. Show, in descending order, all the accounts that have a balance greater than what the user input. Each entry is int, string, long, double, boolean (name length, name, credit card number, balance, cashback).
Ask the user for an account balance. Show, in descending order, all the accounts that have a balance greater than what the user input. Each entry is int, string, long, double, boolean (name length, name, credit card number, balance, cashback).
Chapter6: Looping
Section: Chapter Questions
Problem 5GZ
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Question
Question 4: Ask the user for an account balance. Show, in descending order, all the accounts that have a balance greater than what the user input.
Each entry is int, string, long, double, boolean (name length, name, credit card number, balance, cashback).
File that was given
https://bes.hypergrade.com/api/user/file/1923815
NOTE: It has to be printed and sorted by Balance (Higher value on top)
===========================================
File one
---------------------
public class Person implements Comparable<Person> {
private long account;
private String name;
private double balance;
private boolean YN;
public Person(String name, long account, double balance, boolean YN) {
this.account = account;
this.balance = balance;
this.YN = YN;
this.name = name;
}
@Override
public int compareTo(Person per) {
int compare = name.compareTo(per.name);
if (compare == 0) {
return 0;
} else if (compare < 1) {
return -1;
} else {
return 1;
}
}
/**
* @return the balance
*/
public double getBalance() {
return balance;
}
@Override
public String toString() {
String yes_no;
String bs = String.valueOf(balance);
int b = bs.length();
if (!YN) {
yes_no = "No";
} else {
yes_no = "Yes";
}
if (b < 7) {
bs = b + "0";
}
return String.format("%20s", name) + String.format("%20s", account) + String.format("%10s", bs)
+ String.format("%10s", yes_no);
}
private long account;
private String name;
private double balance;
private boolean YN;
public Person(String name, long account, double balance, boolean YN) {
this.account = account;
this.balance = balance;
this.YN = YN;
this.name = name;
}
@Override
public int compareTo(Person per) {
int compare = name.compareTo(per.name);
if (compare == 0) {
return 0;
} else if (compare < 1) {
return -1;
} else {
return 1;
}
}
/**
* @return the balance
*/
public double getBalance() {
return balance;
}
@Override
public String toString() {
String yes_no;
String bs = String.valueOf(balance);
int b = bs.length();
if (!YN) {
yes_no = "No";
} else {
yes_no = "Yes";
}
if (b < 7) {
bs = b + "0";
}
return String.format("%20s", name) + String.format("%20s", account) + String.format("%10s", bs)
+ String.format("%10s", yes_no);
}
============================================
File 2
--------------------------------------------
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;
public class PersonMain {
public static void main(String[] args) throws FileNotFoundException {
//Write
writedatFile();
//Create an arraylist to hold person objects
ArrayList<Person> personList = new ArrayList<Person>();
//Read file
File f = new File("accounts-with-names.dat");
Scanner sc = new Scanner(f);
//Loop until file has data
while (sc.hasNext()) {
//Read every line
String line = sc.nextLine();
//Split fields using comma
String[] lineArr = line.split(",");
int nameLength = Integer.parseInt(lineArr[0]);
String name = lineArr[1];
long account = Long.parseLong(lineArr[2]);
double balance = Double.parseDouble(lineArr[3]);
boolean YN = lineArr[4].equalsIgnoreCase("true");
personList.add(new Person(name, account, balance, YN));
}
sc = new Scanner(System.in);
System.out.println("Enter a balance");
double userEnteredBalance = sc.nextDouble();
System.out.println("Accounts with a balance of at least "+userEnteredBalance+" (sorted by balance)");
System.out.printf("%20s%20s%10s%10s\n", "Name", "Account Number", "Balance", "Cash Back");
int count = 0;
//Iterate and print details
for (Person p : personList) {
if (p.getBalance() >= userEnteredBalance) {
System.out.println(p.toString());
count++;
}
}
System.out.println(count +" results\n");
}
private static void writedatFile() {
try {
FileWriter fileStream = null;
fileStream = new FileWriter("accounts-with-names.dat");
} catch (IOException ex) {
ex.getMessage();
}
}
}
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;
public class PersonMain {
public static void main(String[] args) throws FileNotFoundException {
//Write
writedatFile();
//Create an arraylist to hold person objects
ArrayList<Person> personList = new ArrayList<Person>();
//Read file
File f = new File("accounts-with-names.dat");
Scanner sc = new Scanner(f);
//Loop until file has data
while (sc.hasNext()) {
//Read every line
String line = sc.nextLine();
//Split fields using comma
String[] lineArr = line.split(",");
int nameLength = Integer.parseInt(lineArr[0]);
String name = lineArr[1];
long account = Long.parseLong(lineArr[2]);
double balance = Double.parseDouble(lineArr[3]);
boolean YN = lineArr[4].equalsIgnoreCase("true");
personList.add(new Person(name, account, balance, YN));
}
sc = new Scanner(System.in);
System.out.println("Enter a balance");
double userEnteredBalance = sc.nextDouble();
System.out.println("Accounts with a balance of at least "+userEnteredBalance+" (sorted by balance)");
System.out.printf("%20s%20s%10s%10s\n", "Name", "Account Number", "Balance", "Cash Back");
int count = 0;
//Iterate and print details
for (Person p : personList) {
if (p.getBalance() >= userEnteredBalance) {
System.out.println(p.toString());
count++;
}
}
System.out.println(count +" results\n");
}
private static void writedatFile() {
try {
FileWriter fileStream = null;
fileStream = new FileWriter("accounts-with-names.dat");
} catch (IOException ex) {
ex.getMessage();
}
}
}
=====================================================
The issue with my code is that it will not output the information needed.
NOTE: It has to be sorted by Balance (Higher value on top)
The CURRENT output is-
Accounts with a balance of at least 9000.0 (sorted by balance)
Name Account Number Balance Cash Back
0 results
Name Account Number Balance Cash Back
0 results
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