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39 lines
870 B
39 lines
870 B
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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