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40 lines
870 B
40 lines
870 B
5 years ago
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package com.fr.env.utils;
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/**
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* @author: Maksim
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* @Date: Created in 2020/3/16
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* @Description:
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*/
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public class DisplayUtils {
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/**
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* 获取字符串显示时的计算长度
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* @param text 被计算的字符串
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* @return 计算长度
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*/
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public static int getDisplayLength(String text){
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if (text == null) {
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return 0;
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}
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char[] c = text.toCharArray();
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int len = 0;
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for (int i = 0; i < c.length; i++) {
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len++;
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if(!isLetter(c[i])){
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len++;
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};
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}
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return len;
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}
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/**
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* 判断字符是否为字母、数字、英文符号
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* @param c 传入的字符
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* @return 如果符合上述条件，返回true
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*/
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public static boolean isLetter(char c) {
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int k = 0x80;
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return c / k == 0;
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}
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}
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