print only the number's from a give String

Question:
   your function should take a string and print only the numbers contained in the string.
i/p : String inputString = "Sekhar124hekkkoer9239939siiipere23+++33!!!!!!";
o/p: [124, 9239939, 23, 33]

Code:

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public class OnlyIntegers { public static void main(String[] args) { String inputString = "Sekhar124hekkkoer9239939siiipere23+++33!!!!!!"; List numbers = new ArrayList(); char[] temp = null; char[] in = inputString.toCharArray(); int tempIndex = 0; for (char c : in) { if (temp == null) { temp = new char[10]; } int ascii = (int) c; if (ascii > 47 && ascii < 58) { temp[tempIndex++] = c; } else { if ((new String(temp).substring(0,tempIndex).length()) > 0) { numbers.add((new String(temp).substring(0,tempIndex))); temp = null; tempIndex=0; } } } System.out.println(numbers); } }