Classes and Objects

Classes and Objects | Java: Classes are custom/used data types, and Objects are instances of the data type.

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Syntax:           Class:         class_name {

                                                     // statements...

                                           }

                        Oject:     class_name object_name = new class_name(); 

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Here is the Code: 

1. import java.io.*;
2. class Main {
3. public static void main (String[] args) {
4. A a = new A();
5. a.x = 1;
6. System.out.println(a.x);
7. B b = new B();
8. b.y = 2;
9. b.z = 3;
10. System.out.println(b.y);
11. a.c = b;
12. System.out.println(a.c.z);
13. }
14. }
15. class A {
16.     int x;
17.     B c;
18. }
19. class B {
20.     int y;
21.     int z;
22. }

Output:

1

2

3

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Here is the Video:

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