Applying the this reference should include using the keyword to refer to the current object in code, such as in the following, where the keyword this refers to the Dog object being created:
public class Dog {
private int numLegs, numEyes, numTeeth;
public Dog (int numLegs, int numEyes,
int numTeeth) {
this.numLegs = numLegs;
this.numEyes = numEyes;
this.numTeeth = numTeeth;
}
}