CODEWITHSUNDEEP
java
KyuuQ
KyuuQ

Reputation: 65

How do I write the equals() method in this context?

I need to write a Temperature.equals() method that compares the first temperature to the second temperature in the parenthesis, but I don't know the proper syntax to.

Part 1:

public Temperature(double degreesd, char typec)
{
   degrees = degreesd;
   type = typec;
}

public void set(double degreesd, char typec)
{
   degrees = degreesd;
   type = typec;
}

Part 2:

t1.set(100, 'C');
t2.set(212, 'F');
System.out.println(t1.equals(t2));

The equals() method I need to finish:

public boolean equals(Temperature t2)
{
   return ( Temperature.getC() == t2.getC() );
   // getC() is a function that returns degrees in Celsius as a double.
}

I don't know the proper syntax to pass t1 into where "Temperature.getC()" is. Any help is appreciated.

Upvotes: 1

Views: 130

Answers (2)

Hungry Blue Dev
Hungry Blue Dev

Reputation: 1325

It's easier using the getC() method, then you don't have to get into trouble like me:

public boolean equals(Temperature t1) {
    return this.getC() == t1.getC();
}

As for the euqals method (without using getC()):

public boolean equals(Temperature t1) {
    if (this.typec == t1.typec) {
        return (this.degrees == t1.degrees);
    } else {
        double fah = t1.typec == 'F' ? t1.degrees : t2.degrees;
        double cel = t1.typec == 'C' ? t1.degrees : t2.degrees;
        fah = (fah - 32) * 5 / 9;
        return fah == cel;
    }
}

Upvotes: 1

user932887
user932887

Reputation: 

public boolean equals(Temperature t2)
{
   return (this.getC() == t2.getC());
   // getC() is a function that returns degrees in Celsius as a double.
}

Use this to reference the object on which you call equals. In the case of t1.equals(t2), this will be t1.

Upvotes: 3

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