Question

i need created java pattern to filter data, like 13.6Gb, 12MB,15.5Kb
I use those code

  Pattern   p   =   Pattern.compile("(\\d+)(\\w+)"); 
  Matcher   m   =   p.matcher(content);
  String   num_letter   =   m.group(1); 
  String    union  =   m.group(2); 

but it can’t detect decimal number, so how to modify this pattern

Answer 1

Try adding a conditional match for the decimal part:

Pattern.compile("(\\d+(?:[.]\\d+)?)(\\w+)");

Note the use of non-capturing group for the decimal part.