/* Java正規表現サンプル */

import java.util.regex.Pattern;
import java.util.regex.Matcher;

class JSample3_1{
  public static void main(String args[]){
    String str1 = "abc def";
    String str2 = "def abc";
    String str3 = "def\nabc";

    String regex = "\\Aabc";
    Pattern p = Pattern.compile(regex);

    System.out.println("パターン : " + regex);

    check(p, str1);
    check(p, str2);
    check(p, str3);
  }

  private static void check(Pattern p, String target){
    Matcher m = p.matcher(target);

    if (m.find()){
      System.out.println("○ " + target);
    }else{
      System.out.println("× " + target);
    }
  }
}