(int1,int2) (int3,int4)

String[] ints = "(2,3) (4,5)".split("\D+");
System.out.println(Arrays.asList(ints));
// prints [, 2, 3, 4, 5]

String[] ints = "(2,3) (4,5)".replaceAll("^\D*(.*)\D*$", "$1").split("\D+");
System.out.println(Arrays.asList(ints));
// prints [2, 3, 4, 5]

Pattern p = Pattern.compile("\((\d+),(\d+)\)\s+\((\d+),(\d+)\)");
String input = "(123,456) (789,012)";

Matcher m = p.matcher(input);

if (m.matches()) {
  int a = Integer.parseInt(m.group(1), 10);
  int b = Integer.parseInt(m.group(2), 10);
  int c = Integer.parseInt(m.group(3), 10);
  int d = Integer.parseInt(m.group(4), 10);
}

String str = "(1,2) (3,4)";
Matcher m = Pattern.compile("\((\d+),(\d+)\) \((\d+),(\d+)\)").matcher(str);
if (m.matches()) {
   System.out.println(m.group(1)); // number 1
   ...
}

String s = "(1,2) (3,4)";
Pattern p = Pattern.compile("\d+");
Matcher m = p.matcher(s);
while (m.find()) {
    System.out.println(m.group());
}

String[] values = s.substring(1).split("\D+");