Question

说我有一个界面和一个类：

    public static interface Businessman { public void workHard(); }

    public static class CTO implements Businessman {}

我应该为CTO创建一个不再是抽象的父母？

Answer 1

假设您不希望编译器抱怨CTO不是抽象的，您可以对Businessman进行CTO的默认（“不执行任何操作”）实现。// DefaultBusinessman.java public class DefaultBusinessman implements Businessman { @Override public void workHard() { } } // CTO.java public class CTO extends DefaultBusinessman { // CTO does no longer need to be abstract, as the implementation of doWork is provided // through inheritance }继承：

{{1}}

Answer 2

您可以将CTO创建为抽象，而不必实现商人

     public abstract class CTO implements Businessman {}

     public class specificCTO extends CTO {
         @Override
         public void workHard() {
         }

     }

将父级添加到抽象类，使其不再是抽象的

2 个答案: