java - return the sum of all integers -

program should return sum of numbers in string.

public static void main(string[] args) {     string data = "1a2b-3c";     data=data.replaceall("[\\d]+"," ");     string[] numbers=data.split(" ");     int sum = 0;     for(int i=0;i<numbers.length;i++){         try{             sum+=integer.parseint(numbers[i]);         }         catch( exception e ) {           e.printstacktrace();         }     }     system.out.println("the sum is:"+sum);  } 

so above input, should return sum 0 ==> (1+2 - 3)

but above code returns 6. right regex this?

here's how should it

string data = "1a2b-3c"; int sum=0; pattern p = pattern.compile("-?\\d+"); matcher m = p.matcher(data); while (m.find()) {   sum+=integer.parseint(m.group()); }