Question

Given the following Student class, write an equals method to determine if two instances of Student are the same person. The equals method should base it's comparison on the student's M number.

public class Student {

String firstName = "";

String lastName = "";

String mNumber = "";

Student(String firstName, String lastName, String mNumber)

{ this.firstName = firstName;

this.lastName = lastName;

this.mNumber = mNumber;

}

private String getMNumber() {

return mNumber;

}

<other methods are imlemented here>

}

Answer 1

public class Student {

    String firstName = "";
    String lastName = "";
    String mNumber = "";

    Student(String firstName, String lastName, String mNumber)
    { 
        this.firstName = firstName;
        this.lastName = lastName;
        this.mNumber = mNumber;
    }

    private String getMNumber() {
        return mNumber;
    }

    public boolean equals(Student obj) {
        return this.mNumber.equals(obj.mNumber);
    }
}

public boolean equals(Student obj) {
    return this.mNumber.equals(obj.mNumber);
}