How to count whitespace in line? [JAVA] -

if have code counting specific word in file , want count whitespace in line, how can write it?

ex. want count whitespace in "int = 0;"

output: whitespace 3.

thank much.

my code:

public static  void main(string[] args) throws ioexception {     scanner in = new scanner (new file("/users/boommacbookproretina/desktop/c/resource [java sample file]/gradecal.java"));      int c1 = 0, c2 = 0, c3 = 0;      string t1 = "int";     string t2 = " ";     string t3 = ";";      while (in.hasnext()){         string line = in.nextline();         line = line.trim();         if (line.length() >0 ){              int k = -1;             while (true){   //count system                 k = line.indexof(t1, k+1);                 if (k<0) break;                 c1++;             }         }     }     system.out.println("total number integers are: " +c1);     system.out.println("total number of whitespace in int line are: " +c2);  } 

resource file counting: download dropbox

try

int = str.length() - str.replaceall(" ", "").length(); 

for requirement

int whitespacecount = 0;  //inside while loop if (character.iswhitespace(text.charat(i)) {         whitespacecount++     }