if (object != null) {
}
Optional<Object> optional = Optional.ofNullable(object);
if (optional.isPresent()) {
}
try {
int number = Integer.parseInt(string);
} catch (NumberFormatException e) {
}
}
try {
int number = Integer.parseInt(string);
} catch (NumberFormatException e) {
}
Pattern pattern = Pattern.compile(regexPattern);
Matcher matcher = pattern.matcher(string);
if (matcher.matches()) {
}
