题目
判断题
Does Java allow an abstract class to be a child of a parent class that is also abstract?
选项
A.True
B.False
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标准答案
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思路分析
Question restatement: Does Java allow an abstract class to be a child of a parent class that is also abstract? Options: True or False.
Option 1: True. In Java, a class can extend another class regardless of whether either class is abstract. When the parent class is abstract, the child class can either ......Login to view full explanation登录即可查看完整答案
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类似问题
What happens if you try to instantiate an abstract class?
Does Java allow an abstract class to be a child of a parent class that is also abstract?
from abc import ABC, abstractmethod class DataProcessor(ABC): def __init__(self, data): self.data = data @abstractmethod def clean(self): pass def process(self): cleaned_data = self.clean() return sum(cleaned_data) class ListProcessor(DataProcessor): def clean(self): cleaned = [] for x in self.data: if isinstance(x, (int, float)): cleaned.append(x) return cleaned class AveragingProcessor(ListProcessor): def process(self): cleaned = self.clean() return sum(cleaned) / len(cleaned) dp = ListProcessor([1, 2, "a", 3]) ap = AveragingProcessor([10, None, 20, 30, "skip"]) print(dp.process()) print(ap.process()) What will happen when the above code is executed? Select all correct statements. Incorrect selections will deduct points from your score.
Can an abstract class be a child class of another abstract class?
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