Main.java File

package com.tkhts;

import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;

@Aspect // This annotation define the aspect
public class Main {
	
	@Pointcut("execution(* *.*(..))") 
	//define pointcut, first * mean any package, 
	//second * means any class, third * means any method
	 void mypointcut(){
		
	}
	
	@Before("mypointcut()")
		//@Before run before every class method run
	public void start(){
		System.out.println("Start Call ");
	}
	
	@After("mypointcut()") 
	//@After run before every class method about to end
	public void stop(){
		System.out.println("Stop Call");
	}
}

TestAspectJ.java File

package com.tkhts;

public class TestAspectJ {

	public static void main(String[] args) {
		System.out.println("inside Main ");
		
		System.out.println("Main Going to End");
	}
}

Output