Unique Character In String

java hashmap uniqe character find out

/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner sc=new Scanner(System.in);
		String string=sc.nextLine();
		ArrayList<Character> list=new ArrayList();
		HashMap<Character,Integer> map=new HashMap();
		for(int i=0;i<string.length();i++){
			if(map.containsKey(string.charAt(i))){
				map.put(string.charAt(i),map.get(string.charAt(i))+1);
			}else{
				map.put(string.charAt(i), 1);
			}
		}
		System.out.print(map);
		
		for(char d : map.keySet()){
			if(map.get(d)==1){
				list.add(d);
			}
		//	System.out.print(map.get(d)+" ");
		}
		System.out.print(list);
	}
}