是否有任何方法可以强制使用某些特定的注释以及Java中的某些特定方法

Question

A class implementing interface ensures that all the methods in the interface are defined in the class, likewise, is there any way to tell the JVM that some specific annotations should be used in implementing class. Consider the following interface

public interface TestClass{
    @BeforeClass
    public void setup();
    @AfterClass
    public void tearDown();
}

and following is the implementing class

public class TestScripts implements TestClass{
    @BeforeClass
    public void setup(){
        /*method body*/
    }
    @AfterClass
    public void tearDown(){
       /*method body*/
   }
}

All I want is that the compiler should show error if @BeforeClass annotation is not used with the method public void setup() and @AfterClass annotation is not used with the method public void tearDown() . Any way to achieve this?

Answer 1

You can't enforce this but what you can enforce is that a sub-class implements an abstract method.

public abstract class TestClass {
    @BeforeClass
    public void beforeClass(){
        setup();
    }

    protected void abstract setup();

    @AfterClass
    public void afterClass(){
       tearDown();
   }

    protected void abstract tearDown();
}

and then any sub-class has to implement these methods and they will be called based on the annotation.