java统计每个字母出现的次数

package Test2016;
 import java.util.Random;
 //统计每个字母出现的次数;
 public class countRandomChar {
   public static void main(String[] args) {
         Random ran=new Random();
         String str="qwertyuiopasdfghjklzxcvbnm";
          for(int i=0;i<=25;i++){
          char[] str1={str.charAt(((char)(Math.random()*26)))};
          char[] count=str1;
       System.out.println(count[i]);
          }
   }


 }