Getter and setter methods greenfoot examples code#
The following code is an example of a simple class with a private variable and a couple of getter/setter methods: public class SimpleGetterAndSetter Īn array of integer numbers, myScores, is initialized with 6 values (line 1) and the array is passed to the setScores() method (line 2). In Java, getter and setter are two conventional methods that are used for retrieving and updating the value of a variable. You may also like: Why Should I Write Getters and Setters? 1. If you are already good with the basics, jump directly to section 4 where I talk about common mistakes and best practices. Computed properties offer getter and setter methods for accessing and changing related properties of the object. So in this article, I would like to deeply discuss getter and setter methods in Java - from the basics to common mistakes and best practices. Getter binds an object property to a function that will be called when that property is looked up. Make note, the exception will be thrown if the name variable value is null or empty. AppMain.java If everything goes well, the following output will be printed in the Ide console.
Another object can ask its value by using a getter method. 2.1 Example with Setter & Getter In this example, we will understand the importance of encapsulation and the usage of setter/getter methods in Java. It is seemingly simple, but not every programmer understands and implements this kind of method properly. Example code for a getter method Because instance variables are private, other objects can’t access its value. Getter and setter are widely used in Java. In the case of a boolean, the getter is called isFoo. A getter for foo is called getFoo and the setter is called setFoo.
Getters and setters are some of the most widely used - and misused - methods in Java. The only thing that makes them getters or setters is convention.
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