What is the difference between BeforeTest and BeforeMethod in TestNG

Question

Both annotations runs before the @test in testNG then what is the difference between two of them.

Answer 1

@BeforeTest : It will call Only once, before Test method.

@BeforeMethod It will call Every time before Test Method.

Example:

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

public class Test_BeforeTestAndBeforeMethod {

    @BeforeTest
    public void beforeTestDemo()
    {       
        System.out.println("This is before test calling.");   
    }
    
    @BeforeClass
    public void beforeClassDemo()
    {
        System.out.println("This is before class calling.");
    }

    @BeforeMethod
    public void beforeMethodDemo()
    {
        System.out.println("This is before method calling.");
    }
    
    @Test
    public void testADemo()
    {
        System.out.println("This is Test1 calling.");
    }

    @Test
    public void testBDemo()
    {
        System.out.println("This is Test2 calling.");
    }

    @Test
    public void testCDemo()
    {
        System.out.println("This is Test3 calling.");
    }
    
    @AfterMethod
    public void afterMethodDemo()
    {
        System.out.println("This is after method calling.");
    }
    
    @AfterClass
    public void afterClassDemo()
    {
        System.out.println("This is after class calling.");
    }
    
    @AfterTest
    public void afterTestDemo()
    {
        System.out.println("This is after test calling.");
    }
}