Char frequency

Question

Could someone fix my code. I wan to read the frequency of each character from a text file into a Hashtable?

Answer 1

import java.util.Enumeration;
import java.util.Hashtable;
public class Test {
      * @param args
     public static void main(String[] args) {
          String content="textcontent";
          char[] contentCharArray=content.toCharArray();
          Hashtable<Character,Integer> ht=new Hashtable();
          for(char ch:contentCharArray){
               Test.add(ht,ch);
          Enumeration<Character> keyEm = ht.keys();
          while(keyEm.hasMoreElements()){
               char ch=keyEm.nextElement();
               int num=ht.get(ch);
               System.out.println(ch+"-------"+num);
     static void add(Hashtable<Character,Integer> ht,char ch){
          if(ht.containsKey(ch)){
               int currentNum=(Integer) ht.get(ch);
               ht.put(ch, currentNum++);
          else{
               ht.put(ch, 1);
}