Have you created automated tests for your project?

Yes, for Java projects, automatic tests are often created using frameworks such as JUnit and Mockito. Automated tests help verify the correctness of the code when changes are made and speed up the development process. For example, you can write a unit test for a method that checks the correctness of calculations:

import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.Test;

class CalculatorTest {
    @Test
    void testAdd() {
        Calculator calc = new Calculator();
        assertEquals(5, calc.add(2, 3));
    }
}

This test will automatically verify that the add method returns the correct result.