我给你改了!能用。
abstract class Item
{
String item_name;
int item_price;
abstract void displayDetails();
}public class book extends Item
{
String author_name;
float seriesno;
public book()
{
item_name="Macbeth";
item_price=10;
author_name="Shakespeare";
seriesno=1.0f;
}
void displayDetails()
{
System.out.println("Book Name is:" +item_name);
System.out.println("Book Price is:" +item_price);
System.out.println("Author Name is " + author_name);
System.out.println("Series Number is:" +seriesno);
}
public static void main(String args[])
{
book bookobj=new book();
bookobj.displayDetails();
}
}
abstract class Item
{
String item_name;
int item_price;
abstract void displayDetails();
}public class book extends Item
{
String author_name;
float seriesno;
public book()
{
item_name="Macbeth";
item_price=10;
author_name="Shakespeare";
seriesno=1.0f;
}
void displayDetails()
{
System.out.println("Book Name is:" +item_name);
System.out.println("Book Price is:" +item_price);
System.out.println("Author Name is " + author_name);
System.out.println("Series Number is:" +seriesno);
}
public static void main(String args[])
{
book bookobj=new book();
bookobj.displayDetails();
}
}
解决方案 »
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