Methods updating instance variables java
To provide the same capability for class variables, the Java programming language includes static initialization blocks.
Note: It is not necessary to declare fields at the beginning of the class definition, although this is the most common practice.
This works well when the initialization value is available and the initialization can be put on one line.
There are two alternatives to using a constructor to initialize instance variables: initializer blocks and final methods.It's important to remember that we want to hide the data of the object as much as possible.The extra buffer provided by these methods allows us to: Or, let's say the application that is using the Person object can only accept usernames that have a maximum of ten characters.One of the ways we can enforce data encapsulation is through the use of accessors and mutators.The role of accessors and mutators are to return and set the values of an object's state.