快速查找指定字符

    /**      * 查找某些字符是否在另一个字符串里出现      *       * @author Java人(java2000.net)      */      public class Test {        /**        * @param args        */        public static void main(String[] args) {          String a = "abcd,efg";          String b = ")(*&^%$#@![]{},.///;:'? <>";          byte[] bb = new byte[256];          char[] cs = b.toCharArray();          for (char c : cs) {            bb[c] = 1;          }          cs = a.toCharArray();          for (char c : cs) {            if (bb[c] == 1) {              System.out.println(c);            }          }        }      }