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[英]Java: calling a super class' protected method from a subclass - not visible?
[英]Calling subclass method from super class
只是想知道我是否能得到一些帮助。
我正在尝试调用以下方法:
public void updateBrand(Scanner input){
System.out.println("1 - HIGHSTREET\n2 - FRENCHCONNECTION\n3 - TEDBAKER\nSelect type of brand (Enter number)");
int choice = input.nextInt();
switch (choice) {
case (1):
setBrand(Brand.highstreet);
System.out.println("Brand of has been changed to HIGHSTREET");
break;
case (2):
setBrand(Brand.frenchconnection);
System.out.println("Brand of has been changed to FRENCHCONNECTION");
break;
case (3):
setBrand(Brand.tedbaker);
System.out.println("Brand of has been changed to TEDBAKER");
break;
default: System.out.println("Invalid input");
break;
}
}
从我的MorningSuit子类到我的Suit Super类中的方法:
public void makeChange(Scanner input){
System.out.println("Are you sure you want to change this suit? (y or n)");
String choice;
choice = input.next();
if (choice.toLowerCase() == "y") {
updateBrand(input);
}
else if (choice.toLowerCase() == "n") {
System.exit(0);
}
else {
System.out.println("Invalid Input");
}
}
但是当我尝试在我的超级类中调用updateBrand(input)方法时收到错误,因为它不存在。 我该如何解决?
您不能在超类的子类中调用方法。
毕竟,如果实例实际上是另一个子类,该怎么办?
您应该将这两个方法都移到同一类中。
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