Interview Question Based On String

1-Reverse the String in java

public class Testing {
 public static String getRevrse(String name) {
 String rev = "";
 for (int i = name.length() - 1; i >= 0; i - ) {
 rev = rev + name.charAt(i);
 }
 return rev;
 }
 public static void main(String[] args) {
String name = Testing.getRevrse("SANJAY");
 System.out.println(name);
}}

How to Print duplicate characters from String?

input :SAANNJAY
o/p S=1 A=3 N=2 Y=1

public class Testing {
 /* How to Print duplicate characters from String? */
 public static Map<Character, Integer> getCout(String name) {
 char[] ch = name.toCharArray();
 Map<Character, Integer> map = new HashMap<Character, Integer>();
 for (char c : ch) {
 if (map.containsKey(c)) {
 map.put(c, map.get(c) + 1);
 } else {
 map.put(c, 1);
 }}
 return map;}
 public static void main(String[] args) {
 Map<Character, Integer> map = Testing.getCout("SANNJAYYY");
 Set<Map.Entry<Character, Integer>> entrySet = map.entrySet();
 for (Entry<Character, Integer> entry : entrySet) {
 System.out.println(entry.getKey() + "=" + entry.getValue());
 }}}