question in the book

[search4survival]

New To Java - question in the book

please read the problem.

I have updated the code.

package absolute_;
import java.util.Scanner;

public class CountingCaloriesMethods 



{
	Scanner Readinput = new Scanner(System.in);
	
	
	public static final double ECONSTANT = 0.0175;
	private double weight,sleephours,Calories,Running,Basketball,Sleeping,runninghours,basketballhours,x,y,z;
	
	
	
	public void enterweight()
	{
		System.out.println("Please enter your weight in pounds");
		weight = Readinput.nextDouble();
		weight = weight /2.2;
		System.out.printf("Your weight in kilos is" + "%6.2f",weight);
		System.out.println();
		
	}
	public  void running()
	{
		System.out.println( "Did you run today: please answer YES OR NO");
		String yesorno = Readinput.next();
		String Yes = "Yes";
		
		if (yesorno.equalsIgnoreCase(Yes))
			{	System.out.println("Please enter number of hours you ran");
				runninghours = Readinput.nextDouble();
				 x = hourstominutes(runninghours);
				Running = 9;
				
			}
		else 
				System.out.println("please answer next question:");
	}
		
	public void basketball()
	{
		System.out.println( "Did you play basketball today: please answer YES OR NO");
		String yesorno = Readinput.next();
		String Yes = "Yes";
		
		if (yesorno.equalsIgnoreCase(Yes))
			{	System.out.println("Please enter number of hours you played basketball");
				 basketballhours = Readinput.nextDouble();
				 y = hourstominutes(basketballhours);
				Basketball = 8;
			}
		else 
				System.out.println("please answer next question:");
		
		
	}
	
	public void sleeping()
	{
		System.out.println( "Did you sleep today: please answer YES OR NO");
		String yesorno = Readinput.next();
		String Yes = "Yes";
		
		if (yesorno.equalsIgnoreCase(Yes))
			{	System.out.println("Please enter number of hours you slept");
				sleephours = Readinput.nextDouble();
				 z = hourstominutes(sleephours);
				Sleeping = 0.9;
			}
		else 
				System.out.println("Thank you");
		
		
	}
	
	public double hourstominutes(double hours)
		{
			hours = hours * 60;
			return hours;

		}
	
	public void calculation()
	{

		double totalminutes = x + y + z;
		Calories = (totalminutes) * (ECONSTANT) * (Running + Basketball + Sleeping)* weight;
		System.out.printf("Total calories burned: " + "%6.2f",Calories );
		System.out.println("Total minutes = " + totalminutes);
		System.out.println("ECONSTANT = " + ECONSTANT);
		System.out.println("Running = " + Running);
		System.out.println("Basketball = " + Basketball);
		System.out.println("Sleeping =" + Sleeping);
		System.out.println("weight= " + weight);
		
		
		System.exit(0);

package absolute_;

public class CountingCalories 
{

	
	public static void main(String[] args)
	
	{
		CountingCaloriesMethods Obj = new CountingCaloriesMethods();
		Obj.enterweight();
		Obj.running();
		Obj.basketball();
		Obj.sleeping();
		Obj.calculation();

	}

}

my question is code seems to work ok.. but i have issues about input... if i enter "any" string or two seperate words it tends to skip steps...please help me how can i improve my code for console input?

[JosAH]

Note that the nextDouble() method doesn't read newline characters; e.g. if you want to read two double values and you type:

1.23
4.56

The inputbuffer contains the characters 1.23<enter>4.56<enter> the first nextDouble() call reads and converts the first double and leaves the following characters in the inputbuffer: <enter>4.56<enter>. The next nextDouble() call 'sees' the <enter> character in the inputbuffer and decides that it can't read a double value.

The cure is simple: put a spurious nextLine() call in the code after you have read a double with nextDouble(); the nextLine() method will remove the <enter> character from the inputbuffer.

kind regards,

Jos