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how do I merg two collections?

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I have two collections and I want to create a third Collection that is the union of the two collecions.

//psuedo code
Collection<String> a = "1","a", "2", "b";
Collection<String> b = "3", "a, "4", "b";
Collection<String> c = a + b;
// would produce..
"1", "a" , "2", "b", "3", "4"

Is there a collection method that does this?

Or must I iterate through the one of the sets and add to the other if it does not 'contain' the object?

TIA
B.



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how do I  merg two collections? Brian O'Brien <brian.obrien@calgaryscientific.com> - 2015-01-04 22:55 -0800
  how do I  merg two collections? Lew <lewbloch@gmail.com> - 2015-01-04 23:17 -0800
  Re: how do I  merg two collections? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-01-05 08:57 -0500
    Re: how do I  merg two collections? BOB <brian.obrien@calgaryscientific.com> - 2015-01-05 08:38 -0800
      Re: how do I  merg two collections? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-01-05 11:52 -0500
  Re: how do I  merg two collections? BOB <brian.obrien@calgaryscientific.com> - 2015-01-05 13:26 -0800
    Re: how do I  merg two collections? Jeff Higgins <jeff@invalid.invalid> - 2015-01-05 17:15 -0500
    Re: how do I  merg two collections? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-01-05 17:35 -0500
      Re: how do I  merg two collections? Lew <lewbloch@gmail.com> - 2015-01-06 15:38 -0800
        Re: how do I  merg two collections? Martin Gregorie <martin@address-in-sig.invalid> - 2015-01-07 13:40 +0000

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