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.
private members are visible only within the class. Members with no specifier have package or default visibility, within the same package. protected members are visible within the package and to subclasses outside it. public members are visible everywhere.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Data members are usually private and accessed through public methods, which is encapsulation in practice.
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
Distinguish between an instance variable and a class variable.
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