java eclipse
0
[待解决问题]
package yun;
public class Bank {
int savedMoney;
int year;
double interest;
double interestRate=0.29;
public double computerInterest() {
interest=yearinterestRatesavedMoney;
return interest;
}
public void setInterestRate(double rate) {
interestRate=rate;
}
package yun;
public class ConstructionBank extends Bank {
double year;
public double computerInterst() {
super.year=(int)year;
double r=year-(int)year;
int day=(int)(r1000);
double yearInterest=super.computerInterest();
double dayInterest=day0.0001*savedMoney;
interest=yearInterest+dayInterest;
System.out.printf("%d元存在建设银行%d年零%d天的利息:%f元\n",savedMoney,super.year,day,interest);
return interest;
}
}
package yun;
public class BankOfDalian extends Bank {
double year;
public double computerInterst() {
super.year=(int)year;
double r=year-(int)year;
int day=(int)(r1000);
double yearInterest=super.computerInterest();
double dayInterest=day0.00012*savedMoney;
interest=yearInterest+dayInterest;
System.out.printf("%d元存在大连银行%d年零%d天的利息:%f元\n",savedMoney,super.year,day,interest);
return interest;
}
}
package yun;
public class SaveMoney {
public static void main(String[] args) {
// TODO Auto-generated method stub
int amount=8000;
ConstructionBank bank1=new ConstructionBank();
bank1.savedMoney=amount;
bank1.year=8.236;
bank1.setInterestRate(0.035);
double interest1=bank1.computerInterest();
BankOfDalian bank2=new BankOfDalian();
bank2.savedMoney=amount;
bank2.year=8.236;
bank2.setInterestRate(0.035);
double interest2=bank2.computerInterest();
System.out.printf("两个银行利息相差%f元\n",interest2-interest1);
}
}
两个银行利息相差0.000000元
所有回答(2)
0
你想问什么？
运行后，就输出 两个银行利息相差0.000000元
可书上不是怎么写的
0
您的代码中有一些拼写错误，导致程序无法正确运行。以下是已经修正的代码：
java
package yun;
public class Bank {
int savedMoney;
int year;
double interest;
double interestRate = 0.29;
public double computeInterest() {
interest = year * interestRate * savedMoney;
return interest;
}
public void setInterestRate(double rate) {
interestRate = rate;
}
}
package yun;
public class ConstructionBank extends Bank {
double year;
public double computeInterest() {
super.year = (int) year;
double r = year - (int) year;
int day = (int) (r * 1000);
double yearInterest = super.computeInterest();
double dayInterest = day * 0.0001 * savedMoney;
interest = yearInterest + dayInterest;
System.out.printf("%d元存在建设银行%d年零%d天的利息:%f元\n", savedMoney, super.year, day, interest);
return interest;
}
}
package yun;
public class BankOfDalian extends Bank {
double year;
public double computeInterest() {
super.year = (int) year;
double r = year - (int) year;
int day = (int) (r * 1000);
double yearInterest = super.computeInterest();
double dayInterest = day * 0.00012 * savedMoney;
interest = yearInterest + dayInterest;
System.out.printf("%d元存在大连银行%d年零%d天的利息:%f元\n", savedMoney, super.year, day, interest);
return interest;
}
}
package yun;
public class SaveMoney {
public static void main(String[] args) {
int amount = 8000;
ConstructionBank bank1 = new ConstructionBank();
bank1.savedMoney = amount;
bank1.year = 8.236;
bank1.setInterestRate(0.035);
double interest1 = bank1.computeInterest();
BankOfDalian bank2 = new BankOfDalian();
bank2.savedMoney = amount;
bank2.year = 8.236;
bank2.setInterestRate(0.035);
double interest2 = bank2.computeInterest();
System.out.printf("两个银行利息相差%f元\n", interest2 - interest1);
}
}
修正后的代码应该能够正确计算两个银行的利息差异。主要修改包括将 computerInterest 方法改为 computeInterest，并修正了计算利息的公式。请注意在计算年利息时，使用的是 year * interestRate * savedMoney，而不是 year * interestRatesavedMoney。
