test.java

新东方的

public class Test
{
	public void methodTest(Person p)
	{
	   p.sleeping();
	   //p.Study();
	   //p.Teaching();	
	}
	
	public static void main(String[] args)
	{       
		Test test = new Test();
		Person p = new Person();
		Person s = new Student();
		Person t = new Teacher();
		test.methodTest(t);
	}
	
}