Java SE 8 Programmer II Practice Questions

1. Given the following code  :-

1     class base1
2     {
3     void display()
4     {
5     System.out.println("base display");
6     }
7     }
8
9     class student extends base1
10     {
11     void display()
12     {
13     System.out.println("student display");
14     }
15
16     void details()
17     {
18     System.out.println("student details");
19     }
20     }
21
22     public class teacher extends student
23     {
24     void display()
25     {
26     System.out.println("teacher display");
27     }
28
29     public void details()
30     {
31     System.out.println("teacher details");
32     }
33     public static void main(String args[])
34     {
35     student s1=new student();
36     s1.details();
37     teacher t=new teacher();
38     t.details();
39     s1=t;
40     s1.details();
41     base1 b1=new base1();
42     b1=s1;
43     b1.display();
44     b1.details();
45     }
46     }

What is the output on execution of the above program?

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