//Sample18_23.java
class Sample18_23{
    public static void main(String[] args){

      String regex = "abcd.*fg";
      System.out.println(regex);
      System.out.println("----------");

      String[] strs = {
        "abcd1234567890fg",
        "abcdxxxxyyyzzzfg",
        "abcdfg",
        "abcdfgh"
      };
      boolean boo;

      for(String str : strs){
        boo = str.matches(regex);
        System.out.println(str + "\t" + boo);
      }
    }
}