Homework Soursecreate a BankAccount class in java and add a copy constructo
create a BankAccount class in java, and add a copy constructor to the BankAccount class. This constructor should accept a BankAccount object as an argument. It should assign to the balance field the value in the argument’s balance field. As a result, the new object will be a copy of the argument object. please have a way to show output. I have a sample but it does not work return ba.balance == ba.balance;
public class BankAccount
{
//private data field
private double balance;
/**
constructor for a new account with no deposit
*/
public BankAccount()
{
balance = 0.0;
}
/**
constructs a bank account with a given balance
@param a double representing the new balance
*/
public BankAccount(double d)
{
balance = d;
}
/**
make a deposit to the account and update the balance
@param a double representing the new deposit amount
*/
public void deposit(double d)
{
balance += d;
}
/**
withdraw specified amount of money
assumes that specified amount is in account
@param double for the amount to withdraw
*/
public void withdraw(double d)
{
balance -= d;
}
/**
gets the amount currently in the account
@return the current balance
*/
public double getBalance()
{
return balance;
}
/**
@returns the BankAccount in the form of a String
*/
public String toString()
{
return \"Balance: $\"+ balance;
}
/**
@returns true if this BankAccount is equal to the BankAccount param
@BankAccount to be compared with this BankAccount
*/
public boolean equals(BankAccount ba)
{
return ba.balance == ba.balance;
}
// end of class
}
Solution
PROGRAM CODE:
BankAccount.java
public class BankAccount
{
//private data field
private double balance;
/**
constructor for a new account with no deposit
*/
public BankAccount()
{
balance = 0.0;
}
/**
copy constructor for a new account with balance from the other account
*/
public BankAccount(BankAccount ba)
{
this.balance = ba.getBalance(); // setting the balance of current object to the other object\'s balance
}
/**
constructs a bank account with a given balance
@param a double representing the new balance
*/
public BankAccount(double d)
{
balance = d;
}
/**
make a deposit to the account and update the balance
@param a double representing the new deposit amount
*/
public void deposit(double d)
{
balance += d;
}
/**
withdraw specified amount of money
assumes that specified amount is in account
@param double for the amount to withdraw
*/
public void withdraw(double d)
{
balance -= d;
}
/**
gets the amount currently in the account
@return the current balance
*/
public double getBalance()
{
return balance;
}
/**
@returns the BankAccount in the form of a String
*/
public String toString()
{
return \"Balance: $\"+ balance;
}
/**
@returns true if this BankAccount is equal to the BankAccount param
@BankAccount to be compared with this BankAccount
*/
public boolean equals(BankAccount ba)
{
return this.balance == ba.balance; // equals comparison happens with the current object and the object within the parenthesis
}
// end of class
}
MyMainClass.java
public class MyMainClass {
public static void main(String[] args) {
// bank account without any deposit
BankAccount ba = new BankAccount();
System.out.println(ba);
//Bank account with deposit
BankAccount ba2 = new BankAccount(25000);
System.out.println(ba2);
//Bank acount with copy constructor
BankAccount ba3 = new BankAccount(ba2);
System.out.println(ba3);
//Testing the equals method
System.out.println(ba2.equals(ba3));
}
}
OUTPUT:
Balance: $0.0
Balance: $25000.0
Balance: $25000.0
true
