//Animal_01.java

public class Animal_01{

      protected static String group = "生き物です。";
      protected String name;

      public Animal_01(){
          this("無名");
      }
      public Animal_01(String name){
          this.name = name;
      }
      public static void printGroup(){
          System.out.println(group);
      }
      public void printName(){
          System.out.println(name + "だぞ！ ガオー！");
      }
}