Simply stated, objects of type String are
read only and immutable. Any modification to the String will have to create a
new String object, while the String Buffer class is used to represent characters
that can be modified at runtime.
String represents fixed-length, immutable
character sequences. In contrast StringBuffer represents growable and writable
character sequences.
This class provides many methods. For
example the length () method gives the current length i.e. how many characters
are there in the string, while the total allocated capacity can be found by the
capacity () method. This is the capacity () function is used to know about the
current characters kept which is displayed
Different Methods:
Capacity()
Insert()
Length()
Append()
