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yadin michaeli
Courses Plus Student 5,423 PointsDefault Value mean?
Hello.
What is a default value and what it purpose please?
2 Answers
markmneimneh
14,132 Pointsif no value is provided then the default value is assumed.
if I call a default class constructor
public foo(){ this.x = 1 this y = 2 }
I am providing default values when the class is instantiated
on the other hand. if I call in an overloaded constructor
public foo(x, y){ this.x = x this y = y }
then the default values are ignored.
markmneimneh
14,132 Pointsif you instantiate an object from a class, and your class has no default constructor, the compiler will make one for you.
I would not this expression "so the default value it like the default constructor?" to describe a default constructor, ..... but in the context of using a default something if you don't provide one ... this may be ok
The bottom line is constructors. (default an overloaded ones). allows you a way to instantiate your object attributes when you create the object.
The default constructor is special because you can provide default values for desired, selected ...etc object attributes that can be used instead of nulls, zeros, blanks ... and so on.
yadin michaeli
Courses Plus Student 5,423 PointsOh Thank you very much! :)
yadin michaeli
Courses Plus Student 5,423 Pointsyadin michaeli
Courses Plus Student 5,423 Pointsso the default value it like the default constructor?