What is the differnence between String Buffer and String
builder despite having knowledge that String builder is
faster than String Buffer and last one is threadsafe.please
tell another important difference.

Answer Posted / rinaldoshi kalol

String is immutable whereas StringBuffer and StringBuilder
can change their values.

The only difference between StringBuffer and StringBuilder
is that StringBuilder is unsynchronized whereas
StringBuffer is synchronized. So when the application needs
to be run only in a single thread then it is better to use
StringBuilder. StringBuilder is more efficient than
StringBuffer.

Criteria to choose among String, StringBuffer and
StringBuilder

If your text is not going to change use a string Class
because a String object is immutable.
If your text can change and will only be accessed from a
single thread, use a StringBuilder because StringBuilder is
unsynchronized.
If your text can changes, and will be accessed from
multiple threads, use a StringBuffer because StringBuffer
is synchronous.

Is This Answer Correct ?    16 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is java string pool?

772


How much ram can a 64 bit processor theoretically?

684


How many days will it take to learn java?

713


What is instance means in java?

806


What does super keyword do?

786


When should you make a function static?

744


what is the swingutilities.invokelater(runnable) method for? : Java thread

808


What is the integer of 16?

764


What is an example of a keyword?

777


How many digits is int32?

743


What is a condition in programming?

759


What comes to mind when someone mentions a shallow copy in java?

899


Implement a stack with push (), pop() and min() in O(1) time.

837


What is variable and example?

735


What is the tradeoff between using an unordered array versus an ordered array?

929