CODEWITHSUNDEEP
java
berke0bayraktar
berke0bayraktar

Reputation: 3

How does referencing a class instance inside constructor work?

class Test{

    int x;

    Test(int x){
        this.x = x;
    }
}

When we say this.x = x the constructor hasn't been completed yet, so no object is created so how does this actually refer to an object that hasn't been created yet?

Upvotes: 0

Views: 326

Answers (1)

Green Cloak Guy
Green Cloak Guy

Reputation: 24691

A constructor is really more of an initializer than anything. When you call a constructor:

Test t = new Test(3);

it's the new keyword that actually allocates/creates the space in memory, and then calls the constructor to build the object within that memory, initializing fields and placing memory wherever it needs to be. That's all abstracted away behind the setting of fields, which is what we usually do in the constructor.

Upvotes: 3

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