java - infinite loop issue in my code : my programm seems not stopping -

/* have file containing data: san francisco: 19887.32
chicago: no report received
new york: 298734.12
los angelos: no report received
, want print cities
code seems it's not stopping!*/

  public static void main(string[] args) {      try (bufferedreader br = new bufferedreader(new filereader("sales.dat"))) {          string line;         char c;         while ((line = br.readline()) != null) {              do{                 c =(char) br.read();                 system.out.print(c);             }while(c != ':');             system.out.println();          }       } catch (exception e) {         // todo auto-generated catch block         e.printstacktrace();      }     } 

your code won't doing need anyway, because skip every 2nd line. instead:

    try (bufferedreader br = new bufferedreader(new filereader("sales.dat"))) {          string line;         while ((line = br.readline()) != null) {             int = line.indexof(':');             if (i != -1)                 system.out.println (line.substring(0, i));         }     } 

and infinite loop: because read() return -1 when @ end of file.