February 2017
Beginner
1056 pages
28h 57m
English
Content preview from Java: An Introduction to Problem Solving and Programming, 8th EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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6.1 Constructors
First things first.
—COMMON SAYING
When you create an object of a class using the new operator, you invoke a special kind of method called a constructor. At that time, you often want certain initializing actions to occur, such as giving specific values to the instance variables. A constructor will perform such initializations. In this section, we tell you how to define and use constructors.
Defining Constructors
A constructor is a special method that is called when you use the new operator to create a new object. Until now, Java has supplied a constructor for us. For example, given the class Species in Listing 5.19 of the previous chapter, we can create a new Species object by writing ...
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