JAVA继承练习——重写父类方法与super关键字之银行利息编程例题

//bank.java--父类
public class bank{
int savedMoney;
int year;
double interest;
double interestRate=0.29;
public double computerInterest(){
interest=year*interestRate*savedMoney;
return interest;
}
public void setInterestRate(double rate){
interestRate=rate;
}
}

~
~
~
~
~
~
~
~
~
~
"bank.java" 14L, 246C//bank.java--父类
public class bank{
int savedMon