Couldn't fit in one photo File Account.java contains a definition for a simple bank account class with methods to withdraw, deposit, get the balanceand account number, and return a String representation. Note that the constructor for this class creates a random accountnumber. Save this class to your directory and study it to see how it works. Then modify it as follows:1.Overload the constructor as follows:public Account (double initBal, String owner, long number) - initializes the balance, owner, and accountnumber as specified• public Account (double initBal, String owner) - initializes the balance and owner as specified; randomlygenerates the account number.public Account (String owner) - initializes the owner as specified; sets the initial balance to 0 and randomlygenerates the account number.2. Overload the withdraw method with one that also takes a fee and deducts that fee from the account.File TestAccount.java contains a simple program that exercises these methods. Save it to your directory, study it to see whatit does, and use it to test your modified Account class.//*******// Account.java//// A bank account class with methods to deposit to, withdraw from,// change the name on, and get a String representation// of the account.// *************************public class Account{private double balance;private String name;private long acctNum;//-//Constructorinitializes balance, owner, and account number//--public Account(double initBal, String owner, long number){balance = initBal;name =owner;acctNum = number;}/-// Checks to see if balance is sufficient for withdrawal.// If so, decrements balance by amount; if not, prints message.//--public void withdraw (double amount){if (balance >= amount)balanceelseamount;-=System.out.println("Insufficient funds") ;}//-// Adds deposit amount to balance.//-Chapter 7: Object-Oriented Design109public void deposit (double amount){balance += amount;}/-// Returns balance.//--public double getBalance(){return balance;//// Returns a string containing the name,//---public String toString (){account number, and balance.return "Name:"name"\nAccount Number:%3D+ acctNum +"\nBalance:" + balance;}} public String toString (){return "Name:"name+"\nAccount Number:+ acctNum+"\nBalance:" + balance;}}***** ****//***********// TestAccount.java//// A simple driver to test the overloaded methods of// the Account class.//*********import java.util.Scanner;public class TestAccount{public static void main(String[] args)String name;double balance;long acctNum;Account acct;Scanner scan = new Scanner(System.in);System.out.println("Enter account holder's first name");scan.next();acct = new Account (name);System.out.println ("Account forSystem.out.println(acct);name%3D+ name": ");System.out.println("\nEnter initial balance");balance = scan.nextDouble ();new Account (balance,name);System.out.println( "Account forSystem.out.println(acct);acct =+ ": ");%3D+name110Chapter 7: Object-Oriented DesignSystem.out.println ("\nEnter account number");acctNum = scan.nextLong();acct = new Account (balance,name,acctNum);System.out.println("Account for "System.out.println(acct);+ name+ ":");System.out.print("\nDepositing 100 into account, balance is now ");acct.deposit(100);System.out.println(acct.getBalance());System.out.print("\nWithdrawing $25, balance is now ");acct.withdraw(25);System.out.println(acct.getBalance ());System.out.print("\nWithdrawing $25 with $2 fee, balance is now ");acct.withdraw (25,2);System.out.println (acct.getBalance ());System.out.println("\nBye!");}

Answered: ing owner, long number) ing owner) -…

Engineering

Computer Science

ing owner, long number) ing owner) - initializes th-

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Concept of memory addresses in pointers

The concept of pointers in high-level languages was introduced in C programming. Pointers are simply the variables that are used to store memory addresses of another variable. These special variables are generally used in the languages such as C Programming and C++ Programming, where it allows the programmer to work more deeply with memory and its addresses.

Question

Couldn't fit in one photo

File Account.java contains a definition for a simple bank account class with methods to withdraw, deposit, get the balance
and account number, and return a String representation. Note that the constructor for this class creates a random account
number. Save this class to your directory and study it to see how it works. Then modify it as follows:
1.
Overload the constructor as follows:
public Account (double initBal, String owner, long number) - initializes the balance, owner, and account
number as specified
• public Account (double initBal, String owner) - initializes the balance and owner as specified; randomly
generates the account number.
public Account (String owner) - initializes the owner as specified; sets the initial balance to 0 and randomly
generates the account number.
2. Overload the withdraw method with one that also takes a fee and deducts that fee from the account.
File TestAccount.java contains a simple program that exercises these methods. Save it to your directory, study it to see what
it does, and use it to test your modified Account class.
//*******
// Account.java
//
// A bank account class with methods to deposit to, withdraw from,
// change the name on, and get a String representation
// of the account.
// *****
********
*********
***
public class Account
{
private double balance;
private String name;
private long acctNum;
//-
//Constructor
initializes balance, owner, and account number
//--
public Account(double initBal, String owner, long number)
{
balance = initBal;
name =
owner;
acctNum = number;
}
/-
// Checks to see if balance is sufficient for withdrawal.
// If so, decrements balance by amount; if not, prints message.
//--
public void withdraw (double amount)
{
if (balance >= amount)
balance
else
amount;
-=
System.out.println("Insufficient funds") ;
}
//-
// Adds deposit amount to balance.
//-
Chapter 7: Object-Oriented Design
109
public void deposit (double amount)
{
balance += amount;
}
/-
// Returns balance.
//--
public double getBalance()
{
return balance;
//
// Returns a string containing the name,
//---
public String toString ()
{
account number, and balance.
return "Name:"
name
"\nAccount Number:
%3D
+ acctNum +
"\nBalance:
" + balance;
}
}

public String toString ()
{
return "Name:"
name
+
"\nAccount Number:
+ acctNum
+
"\nBalance:
" + balance;
}
}
***** ****
//********
***
// TestAccount.java
//
// A simple driver to test the overloaded methods of
// the Account class.
//***
******
import java.util.Scanner;
public class TestAccount
{
public static void main(String[] args)
String name;
double balance;
long acctNum;
Account acct;
Scanner scan = new Scanner(System.in);
System.out.println("Enter account holder's first name");
scan.next();
acct = new Account (name);
System.out.println ("Account for
System.out.println(acct);
name
%3D
+ name
": ");
System.out.println("\nEnter initial balance");
balance = scan.nextDouble ();
new Account (balance,name);
System.out.println( "Account for
System.out.println(acct);
acct =
+ ": ");
%3D
+
name
110
Chapter 7: Object-Oriented Design
System.out.println ("\nEnter account number");
acctNum = scan.nextLong();
acct = new Account (balance,name,acctNum);
System.out.println("Account for "
System.out.println(acct);
+ name
+ ":");
System.out.print("\nDepositing 100 into account, balance is now ");
acct.deposit(100);
System.out.println(acct.getBalance());
System.out.print("\nWithdrawing $25, balance is now ");
acct.withdraw(25);
System.out.println(acct.getBalance ());
System.out.print("\nWithdrawing $25 with $2 fee, balance is now ");
acct.withdraw (25,2);
System.out.println (acct.getBalance ());
System.out.println("\nBye!");
}

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