How can I convert a String to Set<String>? Is it possible?

I have a method with argument of type Set<String>. The variable which i should use as a paramter of the method is type String. What is the solution ?

Method:

Code :

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public static Data searchAnd(Set<String> keywords) throws IllegalAccessException {
}

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Variable:

Code :

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String searchedValue=request.getParameter("formtext2");
...
//this gives an error
Searcher.searchAnd(searchedValue);

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Add your string to a Set, then pass that object as a parameter:

Code java:

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Set<String> set = new HashSet<String>();
set.add(myString);
Searcher.searchAnd(set);

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It worked just fine!
Just one remark: Searcher.searchAnd(set) should be inside a try/catch clause.

Thank you for the help!