How to check if a string starts with one of several prefixes?

Question

I have the following if statement:

String newStr4 = strr.split(\"2012\")[0];
if (newStr4.startsWith(\"Mon\")) {
    str4.add(newStr4);
}

I

Answer 1

A simple solution is:

if (newStr4.startsWith("Mon") || newStr4.startsWith("Tue") || newStr4.startsWith("Wed"))
// ... you get the idea ...

A fancier solution would be:

List days = Arrays.asList("SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT");
String day = newStr4.substring(0, 3).toUpperCase();
if (days.contains(day)) {
    // ...
}