Check If String Is Integer

Check if the value of a String variable is an Integer value.

Javadoc available at https://www.javatapas.com/docs/javatapas/string/CheckIfStringIsInteger.html 


public static boolean checkIfStringIsInteger(String inStr) {
    return checkIfStringIsInteger(inStr,10);
}

public static boolean checkIfStringIsInteger(String inStr, int radix) {
    if(inStr.isEmpty()) return false;
    for(int i = 0; i < inStr.length(); i++) {
        if(i == 0 && inStr.charAt(i) == '-') {
            if(inStr.length() == 1) return false;
            else continue;
        }
        if(Character.digit(inStr.charAt(i),radix) < 0) return false;
    }
    return true;
}