String API in Java provides several utility method to remove white space from String in Java,
from beginning,end and between words.
White space means blank space including tab characters. One of the classic
method to remove white space from beginning and end of a string in Java is trim() method,
which removes white space from beginning and end. While using trim() method, key
thing to remember is that trim() returns a different String object
than older one because String
is immutable in Java. On the other hand if you want to remove all white
spaces from string i.e. white space from beginning, end and between words then
you can use replaceAll() method of String and pass regular
expression\s to find and replace all white spaces including tab
with empty string "". This is the quickest ways of
removing all white space from String in Java. Removing white spaces is not only
common programming requirement in Java development but also one of the common String
Interview question in Java. Once again just remember that every time you
modify a String, even if you remove white space it generate a new String and
remember to store and use that. In this Java tutorial we will see Java program
to remove all white space from String in Java including beginning and end.
Previous Topic
