CharCount

package demo_map;
import java.util.*;
import java.util.Map.Entry;

public class Charcount {
    public static void main(String[] args) {
        System.out.println("please code");
        Scanner sc=new Scanner(System.in);
        String str=sc.next();
        findChar(str);

    }
    public static void findChar(String str){
        char[] arr=str.toCharArray();
        HashMap<Character,Integer> h1=new HashMap<>();
        if (arr==null){
            System.out.println("wrong");
        }else {
            for (int i = 0; i <arr.length ; i++) {
                if (h1.containsKey(arr[i])==true){
                    Integer v=h1.get(arr[i]);
                    v++;
                    h1.put(arr[i],v);
                }else {
                    h1.put(arr[i],1);
                }
            }
        }
        Set<Map.Entry<Character,Integer>> set=h1.entrySet();
        for (Map.Entry<Character,Integer> entry:set) {
            System.out.println(entry.getKey()+": "+entry.getValue());

        }

    }
}