Find duplicate characters in a String and count the number of occurances using Java

Question

How can I find the number of occurrences of a character in a string?

For example: The quick brown fox jumped over the lazy dog.

Some example

Answer 1

public static void main(String[] args) {
        String name="AnuvratAnuvra";
        char[] arr = name.toCharArray();
        HashMap map = new HashMap();

        for(char val:arr){          
            map.put(val,map.containsKey(val)?map.get(val)+1:1);         
        }

        for (Entry entry : map.entrySet()) {
            if(entry.getValue()>1){
            Character key = entry.getKey();
            Object value = entry.getValue();

            System.out.println(key + ":"+value);
            }
            }
    }