Delving Further into Object-Oriented Concepts - Beginning Java Programming: The Object-Oriented Approach - page 249

this.setName(acctName);
this.setAmount(startAmount);
this.amount.setScale(2, BigDecimal.ROUND_HALF_UP);
System.out.println("Account Created: " + this.getName());
}
public String getName() {
return this.name;
}
public BigDecimal getAmount() {
return this.amount;
}
public void setName(String newName) {
String pattern = "^[a-zA-Z0-9]*$";
if (newName.matches(pattern)) {
this.name = newName;
}
}
private void setAmount(String newAmount){
this.amount = new BigDecimal(newAmount);
}
public void withdraw(String withdrawal) throws IllegalArgumentException{
BigDecimal desiredAmount = new BigDecimal(withdrawal);
//if desired amount is negative, throw an exception
if (desiredAmount.compareTo(BigDecimal.ZERO) < 0){
throw new IllegalArgumentException();
}
//if the amount is less than the desired amount, throw an exception
if (this.getAmount().compareTo(desiredAmount) < 0){
throw new IllegalArgumentException();
}
this.setAmount(this.getAmount().subtract(desiredAmount).toString());
System.out.println("Withdrawal: " + this);
}
public void deposit(String deposit) throws IllegalArgumentException{
BigDecimal desiredAmount = new BigDecimal(deposit);
//if desired amount is negative, throw an exception
if (desiredAmount.compareTo(BigDecimal.ZERO) < 0){
throw new IllegalArgumentException();
}
this.setAmount(this.getAmount().add(desiredAmount).toString());
System.out.println("Deposit: " + this);
}
@Override
public String toString(){