Object Class MCQ

1. This method of StringBuffer Class is used to insert the specified string with this string at the specified position?

2. Which method compares the given object to this object?

3. In which standard collection classes implements a linked list data structure?

4. By overriding the toString() method of the Object class, we can return values of the object, so we don't need to write much code?

5. Java defines a peer class of String, called?

6. Which constructor creates an empty string buffer with the specified capacity as length.

7. How many constructors are defined in StringTokenizer class?

8. In which string class function returns the number of characters in a string?

9. Generally string is a sequence of characters, But in java, string is an:

10. Which method of object class can clone an object?

11. Which class is thread-safe i.e. multiple threads cannot access it simultaneously,So it is safe and will result in an order?

12. Which method causes the current thread to wait for the specified milliseconds, until another thread notifies? (invokes notify() or notifyAll() method)?

13. The object cloning is a way to create exact copy of an object?

14. The clone() method is defined in?

15. The Object class is not a parent class of all the classes in java by default?