animal.java

来自「初学者很好的一本入门书籍」· Java 代码 · 共 56 行

public class Animal
{
	private int legs;
	private String kind;
	static private int count;
		
	public Animal()
	{
		this(4);
	}
	
	public Animal(int l)
	{
		setLegs(l);
		count++;
	}
	
	public void eat()
	{
		System.out.println("Eating");
	}
		
	public void move()
	{
		System.out.println("Moving");
	}
	
  public void setLegs(int l)
  {
          if (l != 0 && l != 2 && l != 4)
                  throw new WrongLegNumberException ("Leg number must be 0, 2 or 4!");
  
          legs=l;
  }

	
	public int getLegs()
	{
		return legs;
	}

	public void setKind(String str)
	{
		kind=str;
	}
	
	public String getKind()
	{
		return kind;
	}

	static public int getCount()
	{
		return count;
	}
}