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package com.supervision.util;
import java.util.Arrays;
/**
* @Author：longbao
* @Date：2024/11/1 13:52
* @Description:
*/
public class StringChartUtil {
* 字符串中某个字符出现的次数
* @param str 源字符串
* @param targetChar 查找字符
* @return 出现次数
public static int countChar(String str, char targetChar) {
return (int) Arrays.stream(str.split(""))
.filter(s -> s.charAt(0) == targetChar)
.count();
}