Notes

public class SavingsAccount extends BankAccount {
private double interestRate; // assumption: the rate value will be in percent (such as 0.05 or 5.0/100.0)

public double getInterestRate() {
return this.interestRate;
}

public void setInterestRate(double ratio) {
if(ratio<0.0) { // input validation
System.out.println("The interest rate should be a non-negative real value. Its default value will be 0.0 !");
ratio = 0.0;
}
this.interestRate = ratio;
}

public SavingsAccount(int ID, double balanceValue, double ratio) { // parameterized constructor
super(ID,balanceValue);
this.setInterestRate(ratio);
}

@Override // @Override ANNOTATION indicates that the following method overrides a superclass method. @Override ANNOTATION makes the compiler check the signatures of the two corresponding methods.
public void deposit(double amount){

if(amount<0){
System.out.println("patladın bro");
amount=0;
}
setBalance(getBalance()+amount);
}

@Override
public void printAccountInfo() {
super.printAccountInfo(); // call the corresponding method in superclass
System.out.println("Account Interest Rate : " + this.getInterestRate());
}

@Override
public void withdraw(double amount) {
if(amount>getBalance()){
amount=0;
}
else if(amount<0){
System.out.println("patladın bro");
amount=0;
}
setBalance(getBalance()-amount);
}
}