Question

Coming from Haskell I was used to have concise operators like

not ("x" `elem` ["a","b","c"])

What is the most concise way to do that in plain old java, e.g. for an if-clause?

Lists? Arrays? Helper-Function? That feels so ugly and overly verbose …

Answer 1

Check contains method in java collections:

for example:

ArrayList<String> arrList = new ArrayList<String>();
arrList.add("One");
arrList.add("Two");
arrList.add("Three");

if( ! arrList.contains("Four"))
{
    System.out.println("item not contained");
}