import java.lang.reflect.Method;

public class ApplicationRun
{
      public void run(String className) throws Exception
     {
        Class<?> classtype = Class.forName(className);
        Object obj = classtype.newInstance();
        Method[] methods = classtype.getMethods();
        for(Method method:methods)
        {
         if (method.isAnnotationPresent(Test.class))
         {
             method.invoke(obj,new Object[]{});
         }
        }
     }
}

import java.lang.annotation.ElementType;
import java.lang.annotation.Target;

@Target(ElementType.METHOD)
public @interface Test
{
    
}

import java.lang.reflect.InvocationTargetException;


public class MyClass
{
     public void method1()
     {
         System.out.println("method1");
     }
    @Test
    public void method2()
    {
        System.out.println("method2");
    }
    @Test
    public int add(int a,int b)
    {
        return a+b;
    }
    @Test
    public void doSomething(String str)
    {
        System.out.println(str);
    }
    @Test
    public void doSomething2()
    {
        System.out.println("doSomething2()");
    }
    public static void main(String[] args) throws Exception
    {
        String className = MyClass.class.getName();
        ApplicationRun testRun = new ApplicationRun();
        testRun.run(className);
    }
}