All Java developers use the string in every day’s coding. It is impossible to pass days as a developer without using the Java String class. We also have StringBuffer and StringBuilder classes in Java. Following are some differences of String, StringBuffer and StringBuilder:
|1||String is immutable||StringBuffer is mutable||StringBuilder is mutable|
|2||String is thread-safe||StringBuffer is thread-safe||StringBuilder is not thread-safe|
|3||String is fast||StringBuffer is very slow||StringBuilder is fast|
|4||String storage area is constant string pool||StringBuffer storage area is heap||StringBuilder storage area is heap|
We should prefer StringBuilder in all cases where we have only a single thread accessing the object.