test line number

javadaima

 

public class Student implements java.io.Serializable {
	private String name;

	public static void main(String[] args) {
		//java.io.Serializable s = new Senior();
		//s.name="未央華迪";
		//上一句錯誤
		Student s=new Senior();
		s.name="未央華迪";
		System.out.println(s.name);
		
		
	}
}

class Senior extends Student {
	
}

class Junior extends Student {
}