Spring interview questions part 5
Spring interview questions part 5
Take as many assements as you can to improve your validate your skill rating
Total Questions: 20
1. Which one is the default scope of the beans?
Correct Answer is : Singleton
2. Which scope creates a new bean instance each time when requested?
Correct Answer is : Prototype
3. Session Creates a single bean instance per HTTP request, only valid in the context of a web application?
Correct Answer is : FALSE
4. Which of the following are considered valid beans?
Correct Answer is : All of the mentioned
5. What will be the output?
public class ShoppingCart
{
private List items = new ArrayList();
public void addItem(Product item)
{
items.add(item);
}
public List getItems()
{
return items;
}
}
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Main
{
public static void main(String[] args) {
ApplicationContext context =
new ClassPathXmlApplicationContext("beans.xml");
Product aaa = (Product) context.getBean("aaa");
Product cdrw = (Product) context.getBean("cdrw");
Product dvdrw = (Product) context.getBean("dvdrw");
ShoppingCart cart1 = (ShoppingCart) context.getBean("shoppingCart");
cart1.addItem(aaa);
cart1.addItem(cdrw);
System.out.println("Shopping cart 1 contains " + cart1.getItems());
ShoppingCart cart2 = (ShoppingCart) context.getBean("shoppingCart");
cart2.addItem(dvdrw);
System.out.println("Shopping cart 2 contains " + cart2.getItems());
}
}
Correct Answer is : Shopping cart 1 contains (AAA 2.5, CD-RW 1.5)
6. In above question if scope of shoppingCart named bean is prototype, then what will be the output? What will be the output?
Correct Answer is : Shopping cart 1 contains (AAA 2.5, CD-RW 1.5)
7. Which interface is used to perform initialization of beans?
Correct Answer is : InitializingBean
8. Which interface is used to perform destruction of beans?
Correct Answer is : Disposablebean
9. Alternate way of initialization method is:-
Correct Answer is : init-method attribute
10. Alternate way of destruction method is:-
Correct Answer is : destroy-method attribute
11. Which annotation is used as a substitute of initialization method?
Correct Answer is : @PostConstruct
12. .Which annotation is used as a substitute of destroy method?
Correct Answer is : @PreDestroy
13. Which configuration can be used for Dependency Injection?
Correct Answer is : All of the mentioned
14. To validate Java beans in a web application using annotations.
Correct Answer is : All of the mentioned
15. JSR-303 or bean validation can access beans through annotations.
Correct Answer is : TRUE
16. For validating beans Spring supports.
Correct Answer is : all of the mentioned
17. JSR-303 can’t access java beans directly.
Correct Answer is : FALSE
18. Annotation which indicates a field cannot be a null.
Correct Answer is : @NotNull
19. Annotation used to indicate a field has to have a minimum of 2 characters.
Correct Answer is : @Size
20. Annotation which receives a value in the form regexp=”[email protected]+\\.[a-z]+”.
Correct Answer is : @Pattern
