EliminateDuplicates. java: Write a method public static String eliminateDuplicates(String str) that returns a copy of the argument str after eliminating all duplicate characters. The first occurrence of each character must be preserved and must stay in order relative to the other letters of the string. For example, if str began "cdabba. . .", then the return value would begin "cdab" and not, say, "cdba" or "abcd". The str parameter could contain any printable ASCII characters and spaces, but not tabs or newlines. Examples: eliminateDuplicates("What’s a Seawolf? I’m a Seawolf!") returns "What’s Sewolf?Im!" eliminateDuplicates("Stony Brook University") returns "Stony BrkUives" eliminateDuplicates("abracadabra") returns "abrcd" eliminateDuplicates("AaBbCcDd") returns "AaBbCcDd" eliminateDuplicates("") ← empty string as argument returns "" ← empty string