Abstract Class Abstract Class的意思|示意

That's is the reason abstract methods should be in abstract class (so that one cannot create the object for the abstract class) or interfaces only.

这是抽象的方法应该是抽象类的原因(使人不能创建抽象类的对象)或接口只。

When an abstract class is subclassed, the subclass usually provides implementations for all of the abstract methods in its parent class.

通常当一个抽象类派生子类，子类提供了实现父类的抽象方法。

A child class that extends an abstract class must implement all abstract methods in its parent or itself be declared abstract.

继承抽象类的子类必须实现在其父类或自身中声明为抽象的所有抽象方法。

This indicates that the BankAccount class is an abstract class and the withdrawal method is an abstract operation.

这表示，BankAccount 类是一个抽象类，而withdrawal方法是抽象的操作。

Members marked as abstract, or included in an abstract class, must be implemented by classes that derive from the abstract class.

标记为抽象或包含在抽象类中的成员必须通过从抽象类派生的类来实现。

If you have an abstract class (any class with an abstract method becomes an abstract class), you can not create an object of that class.

如果你有一个抽象类(任何类的抽象方法成为一个抽象类)，您不能创建该类的一个对象。