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Dahua ICC Open API SDK for Java

There is a newer version: 1.0.13.7

package com.dahuatech.hutool.core.text;

/**
 * ASCII字符对应的字符串缓存
 *
 * @author looly
 * @since 4.0.1
 */
public class ASCIIStrCache {

  private static final int ASCII_LENGTH = 128;
  private static final String[] CACHE = new String[ASCII_LENGTH];

  static {
    for (char c = 0; c < ASCII_LENGTH; c++) {
      CACHE[c] = String.valueOf(c);
    }
  }

  /**
   * 字符转为字符串

   * 如果为ASCII字符，使用缓存
   *
   * @param c 字符
   * @return 字符串
   */
  public static String toString(char c) {
    return c < ASCII_LENGTH ? CACHE[c] : String.valueOf(c);
  }
}