【发布时间】：2017-08-23 17:00:50
【问题描述】：
我在编译这段短代码时遇到了错误，如果你能帮我解决它会很有帮助。
import java.util.*;
class DriverProgram {
public static void main(String[] args) {
//Create objects of the class
CreditCardAcct fatherCredit = new CreditCardAcct("Father","121215");
CreditCardAcct SonCredit = new CreditCardAcct("Son","656565");
//loop to perform 10 purchases
for(int vi=0; vi<=10; vi++){
double valueRandom =(Math.random()*1100);
System.out.println("Father purchase"+valueRandom);
fatherCredit.purchase(valueRandom);
valueRandom = (Math.random()*1000);
System.out.println("Son Purchase: "+valueRandom);
SonCredit.purchase(valueRandom);
}
}
}
这两行出现错误
fatherCredit.purchase(valueRandom);
SonCredit.purchase(valueRandom);
这两个错误都是找不到符号。
我知道这个错误解决起来不是很复杂，但我看不出出现这个错误的原因。
谢谢大家，祝大家有个美好的一天！
这是我的 CreditCardAcct 类代码：
import java.util.*;
//class CreditcardAcct definition
class CreditCardAcct {
//instance variables
String cardHolderName;
String cardNumber;
//arraylist to store the Listpurchase
ArrayList<Double> Listpurchase;
//static instance variables of the class
static final double overallAccountLimit = 10000;
static double overallAccountBalance = 10000;
//Class constructor to initialize the variables
public CreditCardAcct(String ParametercardHolderName, String ParametercardNumber) {
this.cardHolderName = ParametercardHolderName;
this.cardNumber = ParametercardNumber;
this.Listpurchase = new ArrayList<Double>();
}
public void Updatecredit(Double Inputamount){
//if condition to update the account balance
if(Inputamount <= overallAccountBalance) {
overallAccountBalance = overallAccountBalance - Inputamount;
Listpurchase.add(Inputamount);
System.out.println("Updated the Purchase!");
System.out.println("Credit balance: "+(overallAccountBalance));
}else {
System.out.println("Insufficient Credit amount, Purchase failed");
}
}
//Accessors and mutators of the class
//To get the Name
public String getCardHolderName() {
return cardHolderName;
}
//To get the card number
public void setCardNumber(String ParametercardNumber) {
this.cardNumber = ParametercardNumber;
}
//To set the name
public void setCardHolderName(String ParametercardHolderName) {
this.cardHolderName = ParametercardHolderName;
}
//To get the purchASE LIST
public ArrayList<Double> getPurchase() {
return Listpurchase;
}
//to set the purchase
public void setPurchase(ArrayList<Double> Listpurchase) {
this.Listpurchase = Listpurchase;
}
//To get the card number
public String getCardNumber() {
return cardNumber;
}
}
【问题讨论】：
-
变量名不要以大写开头...
-
CreditCardAcct 类中的 CreditCardAcct.purchase() 方法在哪里？但是，我确实看到了 CreditCardAcct.setPurchase() 方法和 CreditCardAcct.getPurchase() 方法。