I Need Help With Constructing A Pair! thank you! Please Help!

[Czajkus]

hello thanks for looking, i was doing home work that tells me i have to construct a pair for 2 numbers to do the following things:

the sum
the difference
the product
the average
the distance (abs val)
maximum ( larger of two)
minimum(smaller of two)

so far here is my code:

class Pair 
{
	/**
		Constructs a pair
		@param aFirst the first value of the pair
		@param aSecond the second value of the pair
	*/
	public Pair(double aFirst, double aSecond){
	
	       first = double aFirst;	    //line 10 gets error  ...\src\Pair.java:10: error: '.class' expected first =  double aFirst;
              second = double aSecond;  //line 11 gets error  ...\src\Pair.java:11: error: '.class' expected second = double aSecond;
        }	
	
	/**
		Computes the sum of the values of this pair.
		@return the sum of the first and second values
	*/
	public double getSum(){
		
		double sum = (first + second);
		return sum;
	}
	
	/**
	 	Computes the difference of the values of this pair
		@return the difference of the first and second values
	*/
	public double getDifference(){
	
		double difference = (first - second);
		return difference;	
	}
	
	/**
	 	Computes the product of the values of this pair
	 	@return the product of the first and second values
	*/
	public double getProduct(){
	 	
	 	double product = (first * second);
	 	return product;	
	}
	 
	/**
		Computes the average of the values of this pair
		@return the average of the first and second values
	*/
	public double getAverage(){
		
		double average = (first + second / 2);
		return average;
	}
	/**
		Computes the distance of the values of this pair.
		@return the distance of the first and second values
	*/
	public double getDistance(){
		
		double distance = (first / second);
		return distance;
	}
	/**
		Computes the maximum of the values of this pair.
		@return the maximum of the first and second values
	*/
	public double getMaximum(){

		double maximum = (first * 2 * second * 2);
		return maximum;
	}
	/**
		Computes the minimum of the values of this pair.
		@return the minimum of the first and second values
	*/
	public double getMinimum(){
		
		double minimum = (first * 2 + second *2);
		return minimum;
	}
}

the carrots appear underneath in "aFirst and aSecond" under the "a"

thank you so much and please help!

Alex =)

[Amok]

public Pair(double aFirst, double aSecond){

first = double aFirst; //line 10 gets error ...\src\Pair.java:10: error: '.class' expected first = double aFirst;
second = double aSecond; //line 11 gets error ...\src\Pair.java:11: error: '.class' expected second = double aSecond;
}

change first = double aFirst to first = aFirst;
second = double aSecond to second = aSecond;

I am also assuming that you already have defined first and second as instance variables in your program

[Czajkus]

Thank you so much for replying +) ive tried every possible thing and i still get the same or worse error amount!

maybe my instance variable arent defined properly? any ideas?

sorry for being such a noob im in highschool so this stuff is pretty complicated

thanks in advance!

Alex

[Amok]

public class Pair
{
	//your instance variables
	
	private double first;
	private double second;
	
	//your constructor
	
	public Pair(double aFirst, double aSecond)
	{
		first = aFirst;     // this is where your problem was
		second = aSecond;
	}
	
	//then your methods (your methods looks fine to me)
	
	public double getSum()
	{
		return first + second;
	}
	
	// and all other methods
}

Fix your code according to above code and run it. If you still got problem then let me know.

Thanks