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Why are private variables used in Java programming?
Making a variable private “protects” its value when the code runs. At this level, we are not concerned with protecting it from other programmers changing the code itself. The point of so-called “data hiding” is to keep internal data hidden from other classes which use the class.
Can a public class have private variables?
In Java, can I use private variables of a public class in another class? – Quora. You cannot directly access the private variables in another class, even in the subclass. But you may access the private variables via getter method in your class.
Which of the following is a private class variable?
Explanation: The python is used as the ‘ _’ symbol to define the private class variable.
What is the difference between public and private headers?
At run time, an offset into the object wouldn’t match, causing a memory smash. It seems like erenlender’s answer covers this case with a public/private class pair. Public headers are those needed by the users of the library. Private headers are those needed to compile the library, but which are not needed by library users.
Why do we need a header file in C + +?
The underlying problem is that the header file in C++ must contain information that the compiler needs, but is also used as reference for a human user of a class. As the human user of a class I don’t care about many things. Private fields are one, in-line implementations of functions and methods are another one.
How are global variables stored in a C program?
In C, global variables are stored with the program code. I.e. the space to hold them is part of the object file (either in the data or bss section), instead of being allocated during execution (to either the stack or heap). What other ways are used by languages to store global variables? For example, consider a dynamic language like Python.