26. Which of the following methods returns proxy object?

1. 1. get()

   
   
   

   2. loadDatabase()

   
   
   

   3. getDatabase()

   
   
   

   4. load()

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   load() method returns proxy object. load() method should be used if it is sure that instance exists.

---

27. Which of the following methods hits database always?

1. 1. loadDatabase()

   
   
   

   2. load()

   
   
   

   3. get()

   
   
   

   4. getDatabase()

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   get() method hits database always. Also, get() method does not return proxy object.

---

---

28. Which of the following method is used inside session only?

1. 1. update()

   
   
   

   2. end()

   
   
   

   3. kill()

   
   
   

   4. merge()

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   update() method can only be used inside session. update() should be used if session does not contain persistent object.

---

29. Which of the following is correct error when loading JAR file with duplicate name?

1. 1. java.lang.ClassNotFound

   
   
   

   2. java.io.NullPointerException

   
   
   

   3. java.lang.DuplicateClassError

   
   
   

   4. java.lang.ClassFormatError

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   java.lang.ClassFormatError: Duplicate Name error is thrown when .class file in the JAR contains a class whose class name is different from the expected name.

---

---

30. Which file separator should be used by MANIFEST file?

1. 1. //

   
   
   

   2. /

   
   
   

   3. \

   
   
   

   4. –

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   MANIFEST file uses classes using / file separator.

---