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Java Constructor and Getter and Setter Methods
Posted on 2013-01-03
Hello
I have a quick question regarding Java Constructor and Getter and Setter Methods.
Do you have to declare and initialize both a constructor and getter and setter methods in your class. Or can you choose one or the other?
Thanks
I have a quick question regarding Java Constructor and Getter and Setter Methods.
Do you have to declare and initialize both a constructor and getter and setter methods in your class. Or can you choose one or the other?
Thanks
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You don't need any of them if you don't want to.
You "get" a default constructor from the JVM when you instantiate a class object. Obviously the default ctr is not retro-fitted into your code - you don't see it, it just gets implemented. Getters and Setters are to adhere to OOP principles, whereby you should have only private variables in a class, and have them interrogated and modified by other class objects via method calls, so as not to create dependencies.
You "get" a default constructor from the JVM when you instantiate a class object. Obviously the default ctr is not retro-fitted into your code - you don't see it, it just gets implemented. Getters and Setters are to adhere to OOP principles, whereby you should have only private variables in a class, and have them interrogated and modified by other class objects via method calls, so as not to create dependencies.
Hey Krakatoa
Sorry, If the class variables are private I mean.
I know how to use the dot notation to call a class variable i.e. var.name = "John" but I have read that this is poor practice for encapsulation.
Does Encapsulation require a constructor followed by getter and setter methods?
Sorry, If the class variables are private I mean.
I know how to use the dot notation to call a class variable i.e. var.name = "John" but I have read that this is poor practice for encapsulation.
Does Encapsulation require a constructor followed by getter and setter methods?
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