Question

How to change the textstring

New York, Apple Tree, Banana , Marc Polo

to

New York,Apple Tree,Banana,Marc Polo

I have no idea about how to delete certain blanks which is not between two words.

Any help?

Answer 1

Try replaceAll with a regular expression that matches a comma and the surrounding whitespaces and replaces it with just the comma:

s = s.replaceAll("\\s*,\\s*", ","); 

See it working online: ideone

Note: This won’t remove spaces at the beginning or end of the line. To remove those too you could modify the regular expression, but simpler is to just call String.Trim afterwards.