Hi, just wondered if anyone could help, this is my college work an i have this bit of code, just wondered if anyone could help me.....
im trying to do an addition of 3 array amounts
public void AverageProduction()
{
/*Shows input dialog box asking for user to enter a name
String value declared for user input storeage*/
String category = JOptionPane.showInputDialog( "Please enter a Cider name so we can work out its average production " );
/*If statement used to return program to main start menu if cancel button is pressed*/
if(category==null)
{
Startmenu();/*Instruction to return to start menu*/
}
/*Debug line for data search.Displayed on system.out.println */
//System.out.println("The average is: ");
/*for loop used to search array index for the name entered by user
int a = storage for number of the counter for name array row
(counter for row number; while row number doesn't equal any of the Strings in the array row; add to counter to search again on next row )*/
for(int a =0;a<name.length;a++)/**/
{
/*If statement used to compare string array index storing peoples names equal(ignoring case of lettering) to input entered by the user*/
if (name[a][0].equalsIgnoreCase(category))
{
/*If the if statement is true
Debug line for data search.Displays results on system.out.println */
System.out.println("\t\t\t\t "+name[a][0]+ " \t "+name[a][1] +"\n"+weight[a][2]);
/*Shows user results in a message dialog box, displaying search row number of array String information(name and category group)*/
// JOptionPane.showMessageDialog(null,"The category group for:\n" +weight[a][0] +"\n"+weight[a][1] +"\n"+weight[a][2]);
/*Shows user results in a message dialog box, Average*/
[B][U]JOptionPane.showMessageDialog(null,"The total average is " +weight[a][0] +" + "+weight[a][1] +" + "+weight[a][2]);[/U][/B]
/*Instruction to return to the beginning of method for finding category results once results have been displayed*/
AverageProduction();
}
}
/*Debug line to display error on system.out.println*/
System.out.println(" "+ error+"\nSorry the name you entered didn't match any on file.\n"+ "Please ensure it is spelt correctly");
/*Shows user message dialog box to display error*/
JOptionPane.showMessageDialog(null," Sorry the name you entered didn't match any on file.\n" + "Please ensure it is spelt correctly"
,"Incorrect Data",JOptionPane.ERROR_MESSAGE);
/*Instruction to return to the beginning of method for finding category results once error result has been displayed*/
AverageProduction();
}
How can i get this to work? thanks :) xx
beth2138
0
Newbie Poster
Recommended Answers
Jump to PostSo just add them. I don't understand what part you are having trouble with
double total = weight[a][0] +weight[a][1] +weight[a][2];String concatenation has nothing at all to do with math operations on variables.
Jump to PostJust loop through the array and have a variable that keeps track of the highest. If the current array element is greater than that value, set the value to that elements value.
All 8 Replies
beth2138
0
Newbie Poster
Obviously there is more code that contains my arrays, might be better to send this to someone if anyone could help me??
beth2138
0
Newbie Poster
/*Imports Java library files*/
import javax.swing.JOptionPane;
import java.text.*;
/*Filename for programs class*/
class Cider
{
/*Global variables declared*/
/*2D array storage of information on names and group category - stores 21 pieces of data in 2 rows*
*Saved as a String value*/
public String name [] [] = new String [24] [2];
/*2D array storage of information on weights taken - stores 21 weights in 3 year categories*
*Saved as double variable value*/
public double weight [] []= new double [24] [3];
/*Global String variable to return results to two decimal places*/
DecimalFormat twoPlaces = new DecimalFormat("#,##00.00");
/*Global String variable to return message if user didn't complete the search*/
String searchincomplete = "\t\t\t *** SEARCH WAS UNFINISHED *** ";
/*Global String variable to return error message if input was entered incorrectly*/
String error = "\t\t\t*** ERROR *** INCORRECT INPUT ***";
/*Runs program- method*/
public static void main(String[] args)
{
Cider optpane = new Cider();
}
/*Constructor*/
public Cider()
{
/*2D Array index for storing 23 - String value */
name [0] [0] = "Gills Green Dry";
name [1] [0] = "Venn Ditch";
name [2] [0] = "Golford Rise";
name [3] [0] = "Steaming Jess";
name [4] [0] = "Merrifield Brook";
name [5] [0] = "Waldron Beck";
name [6] [0] = "Coombe Spring";
name [7] [0] = "Abbey Press";
name [8] [0] = "Long Barrow";
name [9] [0] = "Halden Marsh";
name [10] [0] = "Kerrygate Farm";
name [11] [0] = "Rosers Plum";
name [12] [0] = "Buxted Boiler";
name [13] [0] = "Fiddlers Elbow";
name [14] [0] = "Madley Wood";
name [15] [0] = "Burnt Oak Root";
name [16] [0] = "Wobbly Bottom";
name [17] [0] = "Capton Acre";
name [18] [0] = "Didley Furrow";
name [19] [0] = "Appledore Dry";
name [20] [0] = "Deep Part";
name [21] [0] = "Coggins Mill";
name [22] [0] = "Cockyard Fold";
name [23] [0] = "Shirkoak Rosy";
/*2D Array index for storing 23 - String value */
name [0] [1] = "Kent";
name [1] [1] = "Devon";
name [2] [1] = "Kent";
name [3] [1] = "Herefordshire";
name [4] [1] = "Devon";
name [5] [1] = "Sussex";
name [6] [1] = "Devon";
name [7] [1] = "Herefordshire";
name [8] [1] = "Sussex";
name [9] [1] = "Kent";
name [10] [1] = "Herefordshire";
name [11] [1] = "Sussex";
name [12] [1] = "Sussex";
name [13] [1] = "Devon";
name [14] [1] = "Herefordshire";
name [15] [1] = "Sussex";
name [16] [1] = "Kent";
name [17] [1] = "Devon";
name [18] [1] = "Herefordshire";
name [19] [1] = "Kent";
name [20] [1] = "Devon";
name [20] [1] = "Sussex";
name [20] [1] = "Herefordshire";
name [20] [1] = "Kent";
/*2D Array index for storing 23 - Stored as a double variable - decimal */
weight [0] [0] = 158.2;
weight [1] [0] = 1042.2;
weight [2] [0] = 596.0;
weight [3] [0] = 514.1;
weight [4] [0] = 792.1;
weight [5] [0] = 2022.3;
weight [6] [0] = 1192.0;
weight [7] [0] = 405.6;
weight [8] [0] = 527.4;
weight [9] [0] = 892.1;
weight [10] [0] = 748.7;
weight [11] [0] = 4405.6;
weight [12] [0] = 98.6;
weight [13] [0] = 4086.5;
weight [14] [0] = 3089.4;
weight [15] [0] = 45.3;
weight [16] [0] = 856.2;
weight [17] [0] = 687.5;
weight [18] [0] = 1568.7;
weight [19] [0] = 3041.0;
weight [20] [0] = 2255.7;
weight [21] [0] = 589.1;
weight [22] [0] = 2002.3;
weight [23] [0] = 2897.6;
/*2D Array index for storing 23 - Stored as a double variable- decimal */
weight [0] [1] = 195.6;
weight [1] [1] = 987.6;
weight [2] [1] = 609.1;
weight [3] [1] = 528.6;
weight [4] [1] = 784.5;
weight [5] [1] = 2589.3;
weight [6] [1] = 1006.7;
weight [7] [1] = 455.4;
weight [8] [1] = 500.6;
weight [9] [1] = 903.1;
weight [10] [1] = 782.6;
weight [11] [1] = 2581.2;
weight [12] [1] = 102.4;
weight [13] [1] = 3932.7;
weight [14] [1] = 2579.5;
weight [15] [1] = 56.1;
weight [16] [1] = 958.7;
weight [17] [1] = 692.5;
weight [18] [1] = 1682.4;
weight [19] [1] = 2986.4;
weight [20] [1] = 4884.6;
weight [21] [1] = 527.6;
weight [22] [1] = 2524.7;
weight [23] [1] = 156.2;
/*2D Array index for storing 23 - Stored as a double variable - decimal */
weight [0] [2] = 192.4;
weight [1] [2] = 1102.4;
weight [2] [2] = 611.7;
weight [3] [2] = 545.6;
weight [4] [2] = 776.4;
weight [5] [2] = 2214.6;
weight [6] [2] = 1206.7;
weight [7] [2] = 460.2;
weight [8] [2] = 538.7;
weight [9] [2] = 902.1;
weight [10] [2] = 722.4;
weight [11] [2] = 3781.4;
weight [12] [2] = 100.00;
weight [13] [2] = 3799.5;
weight [14] [2] = 3802.1;
weight [15] [2] = 55.4;
weight [16] [2] = 1024.3;
weight [17] [2] = 704.2;
weight [18] [2] = 1654.2;
weight [19] [2] = 3147.5;
weight [20] [2] = 462.7;
weight [21] [2] = 542.4;
weight [22] [2] = 2558.6;
weight [23] [2] = 1042.6;
/*Instruction to begin start menu method*/
Startmenu();
}
/*Method for main start menu*/
public void Startmenu()
{
/*Booleen statement to keep program running so long as an input is selected*/
while (true)
{
/*String array value containing questions for the start menu*/
String [] startquest = new String[]{"County for Cider entered","Which is a cider's average production?","Which is the highest producing cider at:","Which Cider produced above or below threshold","Which County had the best annual Production","Which year had the best production"};
/*Object for start displaying questions from String values already declared. Displayed in JOptionPane */
Object start = JOptionPane.showInputDialog(null,"What would you like to do?",
"Bobble Bottles - Bethanie Caley",JOptionPane.QUESTION_MESSAGE,null, startquest,"Category of name entered");
/*If statement used to close program if cancel button is pressed*/
if (start==null)
{
System.exit(0);
}
/*Else if statement used to start method if start = String below*/
else if (start.equals("County for Cider entered"))
{
CiderCounty(); /*Instruction to go to method for finding category results for a name entered*/
}
else if (start.equals("Which is a cider's average production?"))
{
AverageProduction();
}
else if (start.equals("Which is the highest producing cider at:"))
{
HighestProducingCider();
}
else if (start.equals("Which Cider produced above or below threshold"))
{
AboveOrBelowThreshold();
}
else if (start.equals("Which County had the best annual Production"))
{
AnnualProduction();
}
else if (start.equals("Which year had the best production"))
{
BestProduction();
}
}
}
//************************************/*Method for finding County group from a cider name*/*****************************************************//
public void CiderCounty()
{
/*Shows input dialog box asking for user to enter a name
String value declared for user input storeage*/
String category = JOptionPane.showInputDialog( "Please enter a Cider name so we can\n locate their County it is from " );
/*If statement used to return program to main start menu if cancel button is pressed*/
if(category==null)
{
Startmenu();/*Instruction to return to start menu*/
}
/*Debug line for data search.Displayed on system.out.println */
System.out.println("The county is: ");
/*for loop used to search array index for the name entered by user
int a = storage for number of the counter for name array row
(counter for row number; while row number doesn't equal any of the Strings in the array row; add to counter to search again on next row )*/
for(int a =0;a<name.length;a++)/**/
{
/*If statement used to compare string array index storing peoples names equal(ignoring case of lettering) to input entered by the user*/
if (name[a][0].equalsIgnoreCase(category))
{
/*If the if statement is true
Debug line for data search.Displays results on system.out.println */
System.out.println("\t\t\t\t "+name[a][0]+ " \t "+name[a][1]);
/*Shows user results in a message dialog box, displaying search row number of array String information(name and category group)*/
JOptionPane.showMessageDialog(null,"The category group for:\n" +name[a][0] +"\n"+name[a][1]);
/*Instruction to return to the beginning of method for finding category results once results have been displayed*/
CiderCounty();
}
}
/*Debug line to display error on system.out.println*/
System.out.println(" "+ error+"\nSorry the name you entered didn't match any on file.\n"+ "Please ensure it is spelt correctly");
/*Shows user message dialog box to display error*/
JOptionPane.showMessageDialog(null," Sorry the name you entered didn't match any on file.\n" + "Please ensure it is spelt correctly"
,"Incorrect Data",JOptionPane.ERROR_MESSAGE);
/*Instruction to return to the beginning of method for finding category results once error result has been displayed*/
CiderCounty();
}
//********************************************END OF METHOD FOR FINDING County group from a cider name************************************************
public void AverageProduction()
{
/*Shows input dialog box asking for user to enter a name
String value declared for user input storeage*/
String category = JOptionPane.showInputDialog( "Please enter a Cider name so we can work out its average production " );
/*If statement used to return program to main start menu if cancel button is pressed*/
if(category==null)
{
Startmenu();/*Instruction to return to start menu*/
}
/*Debug line for data search.Displayed on system.out.println */
//System.out.println("The average is: ");
/*for loop used to search array index for the name entered by user
int a = storage for number of the counter for name array row
(counter for row number; while row number doesn't equal any of the Strings in the array row; add to counter to search again on next row )*/
for(int a =0;a<name.length;a++)/**/
{
/*If statement used to compare string array index storing peoples names equal(ignoring case of lettering) to input entered by the user*/
if (name[a][0].equalsIgnoreCase(category))
{
/*If the if statement is true
Debug line for data search.Displays results on system.out.println */
System.out.println("\t\t\t\t "+name[a][0]+ " \t "+name[a][1] +"\n"+weight[a][2]);
/*Shows user results in a message dialog box, displaying search row number of array String information(name and category group)*/
// JOptionPane.showMessageDialog(null,"The category group for:\n" +weight[a][0] +"\n"+weight[a][1] +"\n"+weight[a][2]);
/*Shows user results in a message dialog box, Average*/
JOptionPane.showMessageDialog(null,"The total average is " +weight[a][0] +" + "+weight[a][1] +" + "+weight[a][2]);
/*Instruction to return to the beginning of method for finding category results once results have been displayed*/
AverageProduction();
}
}
/*Debug line to display error on system.out.println*/
System.out.println(" "+ error+"\nSorry the name you entered didn't match any on file.\n"+ "Please ensure it is spelt correctly");
/*Shows user message dialog box to display error*/
JOptionPane.showMessageDialog(null," Sorry the name you entered didn't match any on file.\n" + "Please ensure it is spelt correctly"
,"Incorrect Data",JOptionPane.ERROR_MESSAGE);
/*Instruction to return to the beginning of method for finding category results once error result has been displayed*/
AverageProduction();
}
//********************************************************************************************
public void HighestProducingCider()
{
/*Shows input dialog box asking for user to enter a Cider Name
String value declared for user input storeage*/
String County = JOptionPane.showInputDialog( "Please chose a year " );
/*Debug line to display error on system.out.println*/
System.out.println(" "+ error+"\nSorry the cider you entered didn't match any on file.\n"+ "Please ensure it is spelt correctly");
/*Shows user message dialog box to display error*/
JOptionPane.showMessageDialog(null," Sorry the cider you entered didn't match any on file.\n" + "Please ensure it is spelt correctly"
,"Incorrect Data",JOptionPane.ERROR_MESSAGE);
/*Return to the beginning of method*/
CiderCounty();
}
//********************************************************************************************
public void AboveOrBelowThreshold()
{
/*Shows input dialog box asking for user to enter a Cider Name
String value declared for user input storeage*/
String County = JOptionPane.showInputDialog( "Please enter a Cider name to find out there average production " );
/*Debug line to display error on system.out.println*/
System.out.println(" "+ error+"\nSorry the cider you entered didn't match any on file.\n"+ "Please ensure it is spelt correctly");
/*Shows user message dialog box to display error*/
JOptionPane.showMessageDialog(null," Sorry the cider you entered didn't match any on file.\n" + "Please ensure it is spelt correctly"
,"Incorrect Data",JOptionPane.ERROR_MESSAGE);
/*Return to the beginning of method*/
CiderCounty();
}
//********************************************************************************************
public void AnnualProduction()
{
/*Shows input dialog box asking for user to enter a Cider Name
String value declared for user input storeage*/
String County = JOptionPane.showInputDialog( "Please County had the best annual production " );
/*Debug line to display error on system.out.println*/
System.out.println(" "+ error+"\nSorry the cider you entered didn't match any on file.\n"+ "Please ensure it is spelt correctly");
/*Shows user message dialog box to display error*/
JOptionPane.showMessageDialog(null," Sorry the cider you entered didn't match any on file.\n" + "Please ensure it is spelt correctly"
,"Incorrect Data",JOptionPane.ERROR_MESSAGE);
/*Return to the beginning of method*/
CiderCounty();
}
//********************************************************************************************
public void BestProduction()
{
/*Shows input dialog box asking for user to enter a Cider Name
String value declared for user input storeage*/
String County = JOptionPane.showInputDialog( "Please enter a county ");
if(County==null)
{
Startmenu();/*Instruction to return to start menu*/
}
for(int a =0;a<name.length;a++)/**/
{
/*If statement used to compare string array index storing peoples names equal(ignoring case of lettering) to input entered by the user*/
if (name[a][0].equalsIgnoreCase(County))
{
/*If the if statement is true
Debug line for data search.Displays results on system.out.println */
System.out.println("\t\t\t\t "+name[a][0]+ " \t "+name[a][1]);
/*Shows user results in a message dialog box, displaying search row number of array String information(name and category group)*/
JOptionPane.showMessageDialog(null,"The category group for:\n" +name[a][0] +"\n"+name[a][1]);
/*Instruction to return to the beginning of method for finding category results once results have been displayed*/
CiderCounty();
}
}
/*Debug line to display error on system.out.println*/
System.out.println(" "+ error+"\nSorry the cider you entered didn't match any on file.\n"+ "Please ensure it is spelt correctly");
/*Shows user message dialog box to display error*/
JOptionPane.showMessageDialog(null," Sorry the cider you entered didn't match any on file.\n" + "Please ensure it is spelt correctly"
,"Incorrect Data",JOptionPane.ERROR_MESSAGE);
/*Return to the beginning of method*/
CiderCounty();
}
//********************************************************************************************
/*
public AssigmentNew()
{
//Defining my first variable - i created a double as it will contain a decimal point - gallons.pints
double value = 0;
//The enter function has been called to insert amount that you want converting
value = enter();
System.out.println(value);
//Spltting the amount up that had been entered getting the first amount.
int gallons = (int)(value);
System.out.println("Gallons = "+gallons);
//Splitting the amount given into pints
int pints = (int)((value-gallons)*10);
System.out.println("Pints = " +pints);
//Multiplying the amount of gallons in to pints.
int gallonsInToPints = gallons*8;
System.out.println("Gallons in to pints = "+gallonsInToPints);
//Adding the amounts of pints entered and the amount of gallons converted into pints together
value = AddingBothAmountsTogether(gallonsInToPints, pints);
System.out.println("Both values added together = "+value);
//Calling the ConvertingToLitres function, where the total amount of pints has been multiplies by the conversion factor
double litres = 0.5682625;
value = convertingToLitres(value, litres);
System.out.println("Converted in to litres ="+ value);
//Printing out the final amount of litres
double Amount = value;
FinalStep(Amount);
private double enter()
{
//Here it is asking to enter an amount to convert, this will then return the amount when the enter function is being called
return Double.parseDouble(JOptionPane.showInputDialog("Enter the amount of gallons.pints"));
}
private double AddingBothAmountsTogether(double first, double second)
{
//Adding both amount together so that its all converted into Pints
return first + second;
}
private double convertingToLitres(double third, double fourth)
{
//Multiplying both amounts together to get the final amount of litres, using the conversion amount.
return third * fourth;
}
public void FinalStep(double Amount)
{
JOptionPane.showMessageDialog(null,"Converted into litres = " + Amount);
}
*/
}
That is my full code, im trying to work out the average but first of all need to get the sum of the three amounts before i can dived by 3 to get an average?! HELP PLEASE?!?!?
On any other ones i could do with help too Thankyou x
Ezzaral
2,714
Posting Sage
Team Colleague
Featured Poster
So just add them. I don't understand what part you are having trouble with
double total = weight[a][0] +weight[a][1] +weight[a][2];String concatenation has nothing at all to do with math operations on variables.
beth2138
0
Newbie Poster
Sorry my mind went blank an i have been sat going over it all afternoon over a simple problem.
I don't suppose you have an idea as to how i could find out the highest year produced amount, this is my next question........they pick a year the first lot of data is 1995,2000 and 2005 the user needs to pick a year and show the highest produce from that year?
• Which was the highest producing cider at <User Input – Year> and what was that production?
Thanks muchly
Ezzaral
2,714
Posting Sage
Team Colleague
Featured Poster
Just loop through the array and have a variable that keeps track of the highest. If the current array element is greater than that value, set the value to that elements value.
beth2138
0
Newbie Poster
Thanks alot i shall try :) i might pop back for help when im done if thats ok!
Thanks again
beth2138
0
Newbie Poster
Just loop through the array and have a variable that keeps track of the highest. If the current array element is greater than that value, set the value to that elements value.
Help...how do i do this i am totally stuck, would you be able to show me?!?! :S Please
VernonDozier
2,218
Posting Expert
Featured Poster
Help...how do i do this i am totally stuck, would you be able to show me?!?! :S Please
Here's a skeleton:
// array[] is an array of Integer.
int maxNumber = array[0]; // intialize to first element
for (int i = 1; i < array.length; i++)
{
if (array[i] > maxNumber)
maxNumber = array[i];
}
// maxNumber now holds maximum of array.
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