统计字符串中某个字出现的次数

package ch11;

import java.util.Scanner;

/**
 * Created by liwenj on 2017/7/21.
 */
public class T6 {
    public static void main(String[] args) {
        String w = "我爱你中国，我爱你故乡";
        String a = "爱";
        int k=0;
        for (int i=0;i<w.length();i++){
           String tp=w.substring(i,i+1);
            System.out.println(tp);
            if(tp.equals(a)){
                k++;
            }
        }
        System.out.println(a+"出现的次数是"+k);
    }
}