Delving Further into Object-Oriented Concepts - Beginning Java Programming: The Object-Oriented Approach - page 238

setName(acctName);
setAmount(startAmount);
amount.setScale(2, BigDecimal.ROUND_HALF_UP);
}
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 (amount.compareTo(desiredAmount) < 0){
throw new IllegalArgumentException();
}
this.amount = this.amount.subtract(desiredAmount);
}
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.amount = this.amount.add(desiredAmount);
}
}
17. Now adapt your AccountManager class to use the getters and setters you've created. Notice how you
cannot use the setAmount() method because it is also private. You need to use the withdraw() and