是否可以从Java中的多个抽象类继承？

Question

是否可以从 Java中的多个抽象类继承 ？

Answer 1

You can achieve it in a some way but only with transitive inheriting as Java doesn't support explicit multiple inheritance for classes.

You can indeed have a class X that derives from an abstract class Y that derives itself from an abstract class Z .

public class X extends Y {...}
public abstract class Y extends Z{...}
public abstract class Z {...}

Collection classes are a good example of that :

For example, the concrete class ArrayList extends the abstract class AbstractList that extends the abstract class AbstractCollection