Remove Special spaces

requirement : Remove all spaces in the string

Practice :

SYSTEM.OUT.PRINTLN ("Revised Guide". Replace ("", ""));

problem : The space between "Nan Xiu" cannot be removed

reason : "Nan Xiu" This string has a special space, the corresponding Unicode code is \u0026\u0023\u0031\u0036\u0030\u003b. The Unicode code corresponding to the normal space is "\u0020"

Here is the difference between the two spaces printed in Python:

In [1]: Print (' \u0026\u0023\u0031\u0036\u0030\u003b '. Encode (' UTF8 '))
B ' & #160; '

In [2]: Print (' \u0020 '. Encode (' UTF8 '))
B ' '

solutions with the help of a small partner :

Pattern p = pattern.compile ("[\\s*|\t|\r|\n|  \\p{zs}]* ");
Matcher m = P.matcher ("Guide       Revision");
System.out.println (M.replaceall (""));

Remove Special spaces