Determine the number of occurrences of letters in a string by using the Split method

public class Zuoye3 {public static void main (string[] args) {string a= "Mingrikejijavabu";//The string "I" appears several times and outputs int c=0;// Make c the number of occurrences of I string[] B=a.split ("");//delimiter, split the statement. for (String x:b)//traversal output All letters {if (X.equals ("I"))//whether there is equal to I {C + +;    There is a}}system.out.println ("The number of occurrences of the character I is" +c);}}

　　

Determine the number of occurrences of letters in a string by using the Split method