Using str.subSequence(begin, end)
returns a CharSequence which is a read-only form of the string represented as a sequence of chars. For example:
String string = "Hello";
CharSequence subSequence = string.subSequence(0, 5);
It’s read only in the sense that you can’t change the chars
within the CharSequence
without instantiating a new instance of a CharSequence
.
If you have to use str.subSequence(begin, end)
, you can cast the result to a String
:
String string = "Hello";
String subSequence = (String) string.subSequence(0, 5);
and use all the normal String
operators like subSequence += " World";