Java This Keyword Explained

In this blog post, I will be explaining the ‘this’ keyword. Sometimes a method will need to refer to the object that invoked it. To allow this, Java defines the this keyword. this can be used inside any method to refer to the current object i.e. the object on which the method was invoked.

Consider the following code snippet:

private int radius;public  Circle(int radius){this.radius = radius;}

 

Since both the passed in variables and the instance fields have the same names, this is used to distinguish. So this.radius refers to the current object’s copy of the radius instance field & radius refers to the value passed in.

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