calculation methods

[nathan gibson]

i have been working on this program and i have gotten it almost complete. everything is working correctly except for my output on two calculations. its something like this:

|               Pounds of CO2             |      Pounds of CO2         |                       |
|               Emmited from              |      Reduced from          |                       |
|   Gas   |      Electricity  |   Waste   |   Recycling  |  New Bulbs  |    CO2 Footprint      |
|   50404.326   |           44483.899999999994     |    0.0    |      3054.0     |       0.0   |          97942.226          |
|   58630.8385   |           43287.94074074074     |    0.0    |      6108.0     |       0.0   |          108026.77924074074          |
|   69489.835   |           45409.21411764706     |    0.0    |      2036.0     |       0.0   |          116935.04911764707          |
|   69489.835   |           50110.68571428572     |    0.0    |      10180.0     |       0.0   |          129780.52071428573          |
|   26363.553   |           42430.493023255825     |    0.0    |      1018.0     |       0.0   |          69812.04602325583          |
 

i have been looking over my methods but i cant figure it out. if someone can see the problem it would be a big help.

  
/**
 * Write a description of class CO2FootPrintTester here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */

public class CO2FootprintTester  
{
        
       public static void main(String[] args){
       
      
       // Create an array of 5 families
       CO2Footprint[] fp = new CO2Footprint[5];
       fp[0] = new CO2Footprint(3, 2604.0, 227.29, 0.084, true, true, true, true, 9);
       fp[1] = new CO2Footprint(6, 3029.0, 213.28, 0.081, false, true, false, true, 3);
       fp[2] = new CO2Footprint(2, 3590.0, 234.78, 0.085, true, false, true, false, 5);
       fp[3] = new CO2Footprint(10,3590.0, 256.04, 0.084, false, false, false, false, 1);
       fp[4] = new CO2Footprint(1, 1362.0, 221.96, 0.086, true, true, true, true, 8);

        
       for(int counter = 0; counter < 5; counter++){
       fp[counter].calculateGasEmissions();
       fp[counter].calculateElectricityEmissions();
       fp[counter].calcWasteReduction();
       fp[counter].calcGrossWasteEmission();
       fp[counter].calcEmissionReductionTotals(); 
       fp[counter].calcCO2Footprint();
       }
       
       
       
       
       
        //print results
        
        System.out.println("|               Pounds of CO2             |      Pounds of CO2         |                       |");
        System.out.println("|               Emmited from              |      Reduced from          |                       |");
        System.out.println("|   Gas   |      Electricity  |   Waste   |   Recycling  |  New Bulbs  |    CO2 Footprint      |");
        
        
        
        for (int counter = 0; counter < fp.length; counter++) {
            System.out.print("|   " + fp[counter].calculateGasEmissions() + "   |           ");
            System.out.print(fp[counter].calculateElectricityEmissions() + "     |    ");
            System.out.print(fp[counter].calcWasteReduction() + "    |      ");
            System.out.print(fp[counter].calcGrossWasteEmission() + "     |       ");
            System.out.print(fp[counter].calcEmissionReductionTotals() + "   |          ");
            System.out.print(fp[counter].calcCO2Footprint() + "          |");
            System.out.print("\n");
        }

         
    }
}

    

        
        
    
  

     /** 
  * Write a description of class CO2Footprint here. 
  *  
  * @author (your name)  
  * @version (a version number or a date) 
  */  
 public class CO2Footprint  
 {  
         public int numPeople;  
         public double electricityEmissions;  
         public double gas;  
         public double gasFootPrint;  
         public double aveElecBill;  
         public double aveElecPrice;  
         public boolean paper;  
         public boolean plastic;  
         public boolean glass;  
         public boolean cans;  
         public int numLights;  
         public int lightsTotal;  
         public double paperReductions;  
         public double plasticReductions;  
         public double glassReductions;  
         public double canReductions;  
         public double emissionReductions;  
         public double emissionReductionTotal;  
         public double grossWasteEmission;  
         public double totalReductionsPaper;
         public double totalReductionsPlastic;
         public double totalReductionsGlass;
         public double totalReductionsCans;
         public double CO2Footprint;
   
   public CO2Footprint( int numberOfPeople, double gasFootPrint, double averageElectricBill,      
   double averageElectricPrice, boolean paperRecyled, boolean plasticRecyled, boolean glassRecyled,     
   boolean cansRecyled, int numLightsRecyled)       
     {  
         numPeople=numberOfPeople;
         gas = gasFootPrint;
         aveElecBill = averageElectricBill;
         aveElecPrice = averageElectricPrice;
         paper = paperRecyled;
         plastic = plasticRecyled;
         glass = glassRecyled;
         cans = cansRecyled;
         numLights = numLightsRecyled;


         
     }   
   
   
public double calculateGasEmissions(){
        gasFootPrint = 19.3565 * gas;
        return gasFootPrint;
        }
            
      public double calculateElectricityEmissions(){
          electricityEmissions = (aveElecBill/aveElecPrice) * 1.37 * 12;
          return electricityEmissions;
            }


    public double calcWasteReduction(){
       emissionReductions = lightsTotal * 1.37 * 73;
       return  emissionReductions;
}
    
       public double calcGrossWasteEmission() {
            grossWasteEmission = numPeople * 1018;
            return grossWasteEmission;
    
}

       
    public double calcCanReductions() {
            double can = 165.8;
                if (cans){
                    canReductions  = (can * numPeople);
                }
                return canReductions;
            }
        
    public double calcGlassReductions() {
            double glassReduce = 46.6;
                if(glass){
                    glassReductions = (glassReduce * numPeople);
              
            }
            return glassReductions;
        }
        
            
    public double calcPlasticReductions() {   
             double plasticReduce = 25.6;
             if(plastic){
                plasticReductions = (plasticReduce * numPeople);
              }
            return plasticReductions;
        }
        
        
            
    public double calcPaperReductions() {   
               double paperReduce = 184.0;
               if(paper){
                    paperReductions = (paperReduce * numPeople);   
            }
        
        return paperReductions;
        
        }
        
    public double calcEmissionReductionTotals() {   
             emissionReductionTotal = paperReductions + plasticReductions + glassReductions + canReductions;
             return emissionReductionTotal;
            } 


    public double calcCO2Footprint() {   
             CO2Footprint = (gasFootPrint + electricityEmissions + grossWasteEmission) - (emissionReductionTotal + emissionReductions);
             return CO2Footprint;
            } 
}
   
           
           

[nathan gibson]

i got the bulbs column fixed, but my co2footprint column is still jacked up

[nathan gibson]

wheewww i figured this part out.

[nathan gibson]

i have got another small problem before i will be completed with this. everything works fine, but it outputs out of line.

|               Pounds of CO2             |      Pounds of CO2         |                       |
|               Emmited from              |      Reduced from          |                       |
|   Gas   |      Electricity  |   Waste   |   Recycling  |  New Bulbs  |    CO2 Footprint      |
|50404.326|44483.899999999994|900.0900000000001|3054.0|1266.0|95776.136|
|58630.8385|43287.94074074074|300.03000000000003|6108.0|1148.4|106578.34924074075|
|69489.835|45409.21411764706|500.05|2036.0|461.2|115973.79911764707|
|69489.835|50110.68571428572|100.01|10180.0|0.0|129680.51071428573|
|26363.553|42430.493023255825|800.08|1018.0|422.0|68589.96602325582|
  

           for (int counter = 0; counter < fp.length; counter++) {
            System.out.print("|" + fp[counter].calculateGasEmissions() + "|");
            System.out.print(fp[counter].calculateElectricityEmissions() + "|");
            System.out.print(fp[counter].calcWasteReduction() + "|");
            System.out.print(fp[counter].calcGrossWasteEmission() + "|");
            System.out.print(fp[counter].calcEmissionReductionTotals() + "|");
            System.out.print(fp[counter].calcCO2Footprint() + "|");
            System.out.print("\n");
        }

         
    } 

is there a simple way to do this? im aware of print f, but ive never used it with this type of output, will it work? how do you do it?

[Janeice DelVecchio]

Try this:

System.out.print(String.format("%.2f", fp[counter].calculateElectricityEmissions()) + "|")    

I think that'll do it.

[nathan gibson]

thank you so much man. sooooo glad to get this assignment done its like wooow

[Janeice DelVecchio]

So.... post what you have so we can see......

[Campbell Ritchie]

nathan gibson wrote: . . . man. . . .

Don't call Janeice "man"

[Janeice DelVecchio]

Campbell Ritchie wrote:

nathan gibson wrote: . . . man. . . .

Don't call Janeice "man"

It's nice *someone* looks out for me.

[Campbell Ritchie]

Janeice DelVecchio wrote:It's nice *someone* looks out for me.

You're welcome I have to do the same for Jeanne and Joanne too, sometimes.

[nathan gibson]

   
/**
 * This class creates five objects and prints the output.
 * 
 * Nathan Gibson
 * @ 11/8/09
 */

public class CO2FootprintTester  
{
        
       public static void main(String[] args){
       
      
       // Create an array of 5 families
       CO2Footprint[] fp = new CO2Footprint[5];
       fp[0] = new CO2Footprint(3, 2604, 227.29, .084, true, true, true, true, 9);
       fp[1] = new CO2Footprint(6, 3029, 213.28, .081, false, true, false, true, 3);
       fp[2] = new CO2Footprint(2, 1745, 234.78, .085, true, false, true, false, 5);
       fp[3] = new CO2Footprint(10, 3590, 256.04, .084, false, false, false, false, 1);
       fp[4] = new CO2Footprint(1, 1362, 221.96, .086, true, true, true, true, 8);

        
       for(int counter = 0; counter < 5; counter++){
       fp[counter].calculateGasEmissions();
       fp[counter].calculateElectricityEmissions();
       fp[counter].calcWasteReduction();
       fp[counter].calcGrossWasteEmission();
       fp[counter].calcEmissionReductionTotals(); 
       fp[counter].calcCO2Footprint();
       }
       
       
       
       
       
        //print results
        
        System.out.println("|               Pounds of CO2             |      Pounds of CO2         |                       |");
        System.out.println("|               Emmited from              |      Reduced from          |                       |");
        System.out.println("|   Gas   |      Electricity  |   Waste   |   Recycling  |  New Bulbs  |    CO2 Footprint      |");
        
        
        
        for (int counter = 0; counter < fp.length; counter++) {
            System.out.print(String.format("  %5.2f", fp[counter].calculateGasEmissions()) + "        ");
            System.out.print(String.format("%5.2f", fp[counter].calculateElectricityEmissions()) + "        ");
            System.out.print(String.format("%5.2f", fp[counter].calcWasteReduction()) + "        ");
            System.out.print(String.format("%5.2f", fp[counter].calcGrossWasteEmission()) + "      ");
            System.out.print(String.format("%5.2f", fp[counter].calcEmissionReductionTotals()) + "            ");
            System.out.print(String.format("%5.2f", fp[counter].calcCO2Footprint()));
            System.out.print("\n");
        }

               
    }
}

    

        
        
    
 

    /** 
  * This class creates methods which calculate the carbon footprint of five families. 
  *  
  * Nathan Gibson
  * @11/8/09
  */  
 public class CO2Footprint  
 {  
         public int numPeople;  
         public double electricityEmissions;  
         public double gas;  
         public double gasFootPrint;  
         public double aveElecBill;  
         public double aveElecPrice;  
         public boolean paper;  
         public boolean plastic;  
         public boolean glass;  
         public boolean cans;  
         public int numLights;  
         public int lightsTotal;  
         public double paperReductions;  
         public double plasticReductions;  
         public double glassReductions;  
         public double canReductions;  
         public double emissionReductions;  
         public double emissionReductionTotal;  
         public double grossWasteEmission;  
         public double totalReductionsPaper;
         public double totalReductionsPlastic;
         public double totalReductionsGlass;
         public double totalReductionsCans;
         public double CO2Footprint;
   
   public CO2Footprint( int numberOfPeople, int gasFootPrint, double averageElectricBill,      
   double averageElectricPrice, boolean paperRecyled, boolean plasticRecyled, boolean glassRecyled,     
   boolean cansRecyled, int numLightsRecyled)       
     {  
         numPeople=numberOfPeople;
         gas = gasFootPrint;
         aveElecBill = averageElectricBill;
         aveElecPrice = averageElectricPrice;
         paper = paperRecyled;
         plastic = plasticRecyled;
         glass = glassRecyled;
         cans = cansRecyled;
         numLights = numLightsRecyled;


         
     }   
   
   
public double calculateGasEmissions(){
        gasFootPrint = 19.3565 * gas;
        return gasFootPrint;
        }
            
      public double calculateElectricityEmissions(){
          electricityEmissions = (aveElecBill/aveElecPrice) * 1.37 * 12;
          return electricityEmissions;
            }


    public double calcWasteReduction(){
       emissionReductions = numLights * 1.37 * 73;
       return  emissionReductions;
}
    
       public double calcGrossWasteEmission() {
            grossWasteEmission = numPeople * 1018;
            return grossWasteEmission;
    
}

       
    public double calcCanReductions() {
            double can = 165.8;
                if (cans){
                    canReductions  = (can * numPeople);
                }
                return canReductions;
            }
        
    public double calcGlassReductions() {
            double glassReduce = 46.6;
                if(glass){
                    glassReductions = (glassReduce * numPeople);
              
            }
            return glassReductions;
        }
        
            
    public double calcPlasticReductions() {   
             double plasticReduce = 25.6;
             if(plastic){
                plasticReductions = (plasticReduce * numPeople);
              }
            return plasticReductions;
        }
        
        
            
    public double calcPaperReductions() {   
               double paperReduce = 184.0;
               if(paper){
                    paperReductions = (paperReduce * numPeople);   
            }
        
        return paperReductions;
        
        }
        
    public double calcEmissionReductionTotals() {
             emissionReductionTotal = calcPaperReductions() + calcPlasticReductions() + calcGlassReductions() + calcCanReductions();
             return emissionReductionTotal;
            }



    public double calcCO2Footprint() {   
             CO2Footprint = (gasFootPrint + electricityEmissions + grossWasteEmission) - (emissionReductionTotal + emissionReductions);
             return CO2Footprint;
            } 
}
   
           
           
 

[Campbell Ritchie]

Why have you got so many fields? Why are they all public?

Why are you dividing aveElecBill by itself? And are you getting 1.0?

[nathan gibson]

i think i grabbed the wrong revision and posted it. i had those as private. actually its (aveElecBill/aveElecPrice), i know that sounds the same, but it is just a poor naming of variables. its actually your bill/ how much you are charged for each "piece" (whatever the unit is, watts i guess) i cant vouch for the formula it was given to me with the assignment.

[Campbell Ritchie]

nathan gibson wrote: . . . actually its (aveElecBill/aveElecPrice) . . .

I'm glad it was just me not reading it properly