Why are the data members of a class usually declared private?
Encapsulation and Class as a User-Defined Type
Original Khojo Papers practice question — not from a past board paper.
An instance variable belongs to an object; every object has its own copy, and it is created when the object is created. A class variable is declared static and belongs to the class; there is only one copy however many objects exist, and it is created when the class is loaded.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
A count of the number of objects created is naturally kept in a class variable.
From the same topic and chapter, at a similar level.
Why are the data members of a class usually declared private?
Encapsulation and Class as a User-Defined Type
What is the default value of an instance variable of type int, double, boolean and String in Java?
Encapsulation and Class as a User-Defined Type
Name the access specifiers of Java and state the visibility each gives.
Encapsulation and Class as a User-Defined Type
What is the this keyword and when is it needed?
Encapsulation and Class as a User-Defined Type
Explain the ternary operator in Java and rewrite "if (a > b) max = a; else max = b;" using it.
Operators and Expressions in Java
What is the output of: String s = "Examination"; System.out.println(s.length() + " " + s.substring(0, 4) + " " + s.toUpperCase().charAt(2));
String Handling