Annotation in TestNG

package Webdriverprgs;

import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.AfterSuite;
import org.testng.annotations.AfterTest;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.BeforeSuite;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;

public class Annotationprg {
     @Test
      public void f() {
          System.out.println("f1");
      }
      @BeforeMethod
      public void beforeMethod() {
          System.out.println("before method");
      }

      @AfterMethod
      public void afterMethod() {
          System.out.println("after method");
      }

      @BeforeClass
      public void beforeClass() {
          System.out.println("before class");
      }

      @AfterClass
      public void afterClass() {
          System.out.println("after class");
      }

      @BeforeTest
      public void beforeTest() {
          System.out.println("before test");
      }

      @AfterTest
      public void afterTest() {
          System.out.println("after test");
      }

      @BeforeSuite
      public void beforeSuite() {
          System.out.println("before suit");
      }

      @AfterSuite
      public void afterSuite() {
          System.out.println("after suit");
      }

    }