object and class

Overview:

Let us discuss about object, class in java and the errors of program.

What is an Object in Java?

The following concepts of the java objects:

  • It is an example of a class.
  • It is a real entity that occupies the memory.
  • An object must have a unique identity
  • An object can have different states and behaviors.
  • States represent the individual properties of that object and can be stored in the fields/variables.
  • Object behavior can be described by the operations/actions that an object can conduct.
  • If a class has multiple objects, then all the objects can share the same behaviors and states.
  • An object is a physical entity.
  • The objects are created at run time.

What is class?

A class is a user defined blueprint or prototype or template from which objects are created. It represents the set of properties or methods that are common to all objects of one type. 

Example:

1. Mathematics formulas are class .The problem (real time problem) solved by formulas(class) are object.

2.college – class. Student ,teacher etc., – object.

Reference:

https://www.javatpoint.com/object-and-class-in-java

https://linuxhint.com/java-objects/

https://www.techopedia.com/definition/24339/java-object#:~:text=A%20Java%20object%20is%20a,are%20also%20known%20as%20classes.

https://www.geeksforgeeks.org/classes-objects-java/

Errors:

  1. { – missing

2.[] – missing

3. ; – missing

4. public – c removed

5. , – missing

6. ( -missing

7. void -remove

8. ” – missing

9. No gap between void main

10. out removed

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