convert string to int in java

Question

i have a string that has a int value in it. i just want to extract the int value from the string and print.

String str="No. of Days : 365";
String daysWithSplChar = str.replaceAll("[a-z][A-Z]","").trim();
char[] ch = daysWithSplChar.toCharArray();
StringBuffer stb = new StringBuffer();
for(char c : ch)
{
  if(c >= '0' && c <= '9')
   {
      stb.append(c);
   }
}

int days = Integer.ParseInt(stb.toString());

is there any better way than this. please let me know.

Answer 1

try String.replaceAll

    String str = "No. of Days : 365";
    str = str.replaceAll(".*?(\\d+).*", "$1");
    System.out.println(str);

you will get

365