(JAVA) How to complete this code?

Question

What should I write instead of ??? to get a correct result (output) and why:

This is the code:

0 class ExampleB {
1
2 float x = 7f;
3
4 }
5
6 class ExampleA extends ExampleB {
7
8 float x = 5f;
9
10 public void method () {
11 float x = 2f;
12 System .out. println ("Die Variable aus Zeile 2 hat den Wert : " + ???); //here
13 System .out. println ("Die Variable aus Zeile 8 hat den Wert : " + ???); //and here
14 }
15
16 }

Answer 1

Hello Mohammad Ala Tahhan

You need to learn about the keywords this and super:

https://www.baeldung.com/java-this
https://www.baeldung.com/java-super

public void method() is inside ExampleB, which is the child class of ExampleA.

If you want to print x from Line 2 you need to use super because you mean x from your super class: super.x

If you want to print x from Line 8 you have to use this because.you mean x from your current class:
this.x

Answer 2

and you need to use main() method for test it

Answer 3

Denise Roßberg thank you so much for your explanation and the links.
That was really helpful and exactly what I was looking for.
I hope there was more than an UpVote :)

Answer 4

zemiak thank you for your tip as well