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Java Java Data Structures - Retired Getting There Class Review

Aakash Srivastav
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Aakash Srivastav
Full Stack JavaScript Techdegree Student 11,638 Points
Posted by Aakash Srivastav
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Aakash Srivastav
Full Stack JavaScript Techdegree Student 11,638 Points

constructors

Why does Craig doesn't use "this" keyword in the constructor? i,e this.mDescription = description; this.mAuthorName= authorName; this.mCreationDate = creationDate;

2 Answers

Samuel Ferree
Samuel Ferree
31,722 Points
Samuel Ferree
Samuel Ferree
31,722 Points

If the variable names are different for the local and member variables, like mDescription and description, there is no need to use this

public Thing(int variable)
{
    mVariable = variable // Different names, 'this' not needed.
}

public Thing(String mString)
{
    this.mString = mString; //same name, 'this' needed in order to avoid ambiguity.
}
Anthony Albertorio
Anthony Albertorio
22,624 Points
Anthony Albertorio
Anthony Albertorio
22,624 Points

I would take a look at the Java docs: https://docs.oracle.com/javase/tutorial/java/javaOO/thiskey.html