How to call Selenium to another class : NullPointerException

Question

How can we cal an object selenium to the other file which has half code of selenium.

In PHP i can by following code.

login($this); ----> login

Answer 1

Replace:

public void testAllTests() throws Exception {
    Library obj1 = new Library();
    obj1.Login();
}

With:

public void testAllTests() throws Exception {
    super.Login();
}

Since your Login class already extends Library it already has the Login() method present in it. What you are currently doing is creating a new Library object which does not run the @Before and hence the Selenium field is not initialised (in the new object).

When a subclass extends a base class it will inherit its methods. This is a fundamental Java and OOP concept.