3_04_030421217.java

开始学JAVA老师布置的作业一学期的哦希望新手有用

class Amphibian
{
	public void action() 
	{
		System.out.println("can run on land and swing in water");
	}
	static void alive(Amphibian i)
	{
		i.action();
	}
}

public class Frog extends Amphibian
{
	public static void main(String[] args)
	{
		Frog frog = new Frog();
		Amphibian.alive(frog);
	}
}