Java Review: StringBuilder & StringBuffer

               StringBuilder and StringBuffer provide mutable access to a string type variable. The buffer is synchronized, making it safe for multithreaded use. In most un-threaded cases, StringBuilder is preferred as it is faster than the Buffer due to lack of synchronization.

To use one of these objects, instantiate as follows-

StringBuilder/StringBuffer mySB = new StringBuilder/StringBuffer(str) mySB;

Common methods for both the String builder and buffer include:

append(example)- add almost anything to the string. String, int, float, long, etc.

delete(startIndex, endIndex)

deleteCharAt(index)

reverse()

length()

insert(offset, string)

toString()