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Core Java - Interview Questions and Answers for 'Getter' - 2 question(s) found - Order By Newest

 Q1. Why are Getter and Setter better than directly changing and retrieving fields ?

or

What is the significance of variable hiding in Java ?

or

Why it's preferred to keep variables private and allow their access through getter and setter methods ?
Core Java
Admin
info@buggybread.com
Ans. 1. Methods can participate in runtime polymorphism whereas member variables cannot.

For example -

Vehicle vehicle = new Car();

car.getObjVariable();// will return variable defined in Car

whereas

car.variable

will return the variable from Car class irrespective of the object it holds.

2. Validations can be performed before setting the variables.

3. If the input format changes or some other value or calculated value needs to be returned , that can be absorbed by making change ( wrapping ) in the setter and getter. By this the call to method from outside or interface to the object will remain the same.

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Related Questions

  How to generate getters and setters automatically in eclipse ?
  What ate the getter and setter methods ?
 Why it's a good practice to expose member elements through getter methods ?
 Are getters setter / accessor mutator methods instance methods or static methods ? why ?


 Q2. What ate the getter and setter methods ?
Admin
info@buggybread.com
Ans. getters and setters methods are used to store and manipulate the private variables in java beans. A getters as it has name, suggest retrieves the attribute of the same name. A setters are allows you to set the values of the attributes.

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   Like         Discuss         Correct / Improve     java   java beans   getter   setter


Related Questions

  Why are Getter and Setter better than directly changing and retrieving fields ?

or

What is the significance of variable hiding in Java ?

or

Why it's preferred to keep variables private and allow their access through getter and setter methods ?
  How to generate getters and setters automatically in eclipse ?
 Why it's a good practice to expose member elements through getter methods ?
 Are getters setter / accessor mutator methods instance methods or static methods ? why ?



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