How can I initialize a Set on creation?

[Cathy Chlevner]

I mean something similar to the array syntax :
int[] array =new int[]{1,2,5}

but for Set collection?

Thanks a lot in advance

[Ulf Dittmer]

Hello "katy246 "-

Welcome to JavaRanch.

On your way in you may have missed that we have a policy on screen names here at JavaRanch. Basically, it must consist of a first name, a space, and a last name, and not be obviously fictitious. Since yours does not conform with it, please take a moment to change it, which you can do right here.

As to your question, there's no direct way. It's somewhat hackish, but I think this should work:

new HashSet(Arrays.asList(new String[] { "1", "2", "5" }))

[Cathy Chlevner]

Thanks for your answer -it does look a bit hackish , but is indeed along the lines of what I thought too.

Originally posted by Ulf Dittmer:
Hello "katy246 "-

Welcome to JavaRanch.

On your way in you may have missed that we have a policy on screen names here at JavaRanch. Basically, it must consist of a first name, a space, and a last name, and not be obviously fictitious. Since yours does not conform with it, please take a moment to change it, which you can do right here.

As to your question, there's no direct way. It's somewhat hackish, but I think this should work:

new HashSet(Arrays.asList(new String[] { "1", "2", "5" }))

[Garrett Rowe]

If you're using Java 5 or higher you can use the varargs syntax, but you should also use the generics syntax:

Set<String> s = new HashSet<String>(Arrays.asList("1", "2", "5"))

[ August 24, 2008: Message edited by: Garrett Rowe ]

[Ernest Friedman-Hill]

The other day I saw this wonderfully hackish idiom for the first time:

Set<String> s = new HashSet<String>() {{
  add("1"); add("2"); add("5");
}};

That's an instance initializer in an anonymous class definition.

[Campbell Ritchie]

Originally posted by Ernest Friedman-Hill:
The other day I saw this wonderfully hackish idiom for the first time

That is so bad it is good!