String.equals() with multiple conditions (and one action on result) [duplicate]

Question

Is it possible to do something like this in Java for Android (this is a pseudo code)

IF (some_string.equals("john" OR "mary" OR "peter" OR "etc."){    THEN do something } 

?

At the moment this is done via multiple String.equals() condition with || among them.

Answer 1

Possibilities:

• Use String.equals():

  if (some_string.equals("john") ||     some_string.equals("mary") ||     some_string.equals("peter")) { } 

• Use a regular expression:

  if (some_string.matches("john|mary|peter")) { } 

• Store a list of strings to be matched against in a Collection and search the collection:

  Set<String> names = new HashSet<String>(); names.add("john"); names.add("mary"); names.add("peter");  if (names.contains(some_string)) { }