散列算法与散列码的区别有哪些

public class Groundhog{  protected int number;  public Groundhog(){  }  public Groundhog(int number)  {    this.number = number;  }  @Override  public String toString()  {    return "Groundhog{" + "number=" + number + '}';  }}public class Prediction{  private boolean shadow=Math.random() > 0.5;  @Override  public String toString()  {    if (shadow) return "Six more weeks of Winter";    else return "Early Spring!";  }}public class SpringDetector{  public static void detectSpring(Class grondHotClass) throws Exception{    Constructor constructor = grondHotClass.getConstructor(new Class[]{int.class});    Map map=new HashMap();    for (int i=0;i<10;i++){      map.put(constructor.newInstance(new Object[]{new Integer(i)}),new Prediction());    }    System.out.println("map="+map);    Groundhog groundhog=(Groundhog)constructor.newInstance(new Object[]{new Integer(3)});    System.out.println(groundhog);    if (map.containsKey(groundhog)) {//查找这个key是否存在      System.out.println((Prediction)map.get(groundhog));    }else {      System.out.println("key not find:"+groundhog);    }  }  public static void main(String[] args)  {    try {      detectSpring(Groundhog.class);    } catch (Exception e) {      e.printStackTrace();    }  }}