java Inherited

Java Inheritance（Java继承）是一种面向对象编程的重要概念，它允许一个类（子类）继承另一个类（父类）的属性和方法。子类可以使用父类的方法和属性，也可以重写父类的方法以满足自己的需求。这种继承关系可以形成一个类的层次结构，使得代码更加模块化和易于维护。

相关问题

@Inherited注解作用

@Inherited是Java中的一个元注解（即注解的注解），用于标注一个注解是否具有继承性。具体来说，如果一个注解被@Inherited注解，那么它的子类也会继承这个注解。

举个例子，假设我们有一个@MyAnnotation注解，并且这个注解被@Inherited注解：

@Inherited
@interface MyAnnotation {
  // ...
}

那么如果我们在一个类上使用@MyAnnotation注解：

@MyAnnotation
public class MyClass {
  // ...
}

那么这个注解也会被这个类的子类所继承：

public class MySubclass extends MyClass {
  // ...
}

因此，如果我们在代码中使用了反射来获取MySubclass类上的注解，那么我们也能够获取到@MyAnnotation注解。如果@MyAnnotation没有被@Inherited注解，那么我们就不能获取到这个注解了。

java inheritance

Java inheritance is a mechanism by which one class can inherit properties and methods from another class. The class that is being inherited from is called the superclass or parent class, while the class that is inheriting is called the subclass or child class.

The subclass can access all public and protected properties and methods of its superclass, and it can also have its own properties and methods. This allows for code reuse and makes it easier to organize code into logical hierarchies.

To implement inheritance in Java, you use the "extends" keyword in the class declaration. For example, if you want to create a subclass called "Employee" that inherits from a superclass called "Person", you would declare it like this:

public class Employee extends Person {
    // subclass code here
}

In this example, the Employee class would inherit all public and protected properties and methods from the Person class.