package Base;

import java.util.HashSet;

import java.util.Set;

import java.util.SortedMap;

import java.util.SortedSet;

import java.util.TreeSet;

public class HashSetTest {

public static void main(String[] args) {

String str="gghgaifuerbbaaccddffee";

char[] in = str.toCharArray();

Set set=new HashSet<Character>();

HashSet<Character> hashSet=new HashSet<Character>();

SortedSet<Character> sortedSet=new TreeSet();

//SortedMap<, >

for(int i=0;i<in.length;i++){

set.add(in[i]);

hashSet.add(in[i]);

sortedSet.add(in[i]);

switch(in[i]){

}

}

System.out.println(set);

System.out.println(hashSet);

System.out.println(sortedSet);

}

}