Parsing double

Hello, I am new to Java and would appreciate a clue as to why the my output has garbage for the one double declared in Main. Any help would be appreciated.
import java.text.*;
import java.util.*;
import java.io.*;
import javax.swing.JOptionPane;
public class ymcaProject {
public static void main(String[] args) {
int count=-1;
int i;
double repAnswer;
double total=0.0;
String []fname = new String[100];
String []lname = new String[100];
int []memId = new int[100];
String []gender = new String[100];
int[] age = new int [100];
double [] Membership_fee = new double [100];
int[] Silver_sneaker_member = new int [100];
   start_program(fname,lname,memId,gender,age,Membership_fee,Silver_sneaker_member,count);
//Call to the menu method
int menuAnswer=(int)Menu();
while(menuAnswer !=4)
if(menuAnswer==1)
    count=Modify_Member(fname,lname,count,memId,gender,age,Membership_fee,Silver_sneaker_member);
if(menuAnswer==2)
    Modify_Enrollment();
if(menuAnswer==3)
    Report(fname,lname,gender,memId,count,age,Membership_fee,Silver_sneaker_member,total);
menuAnswer=(int)Menu();
exit_program(fname,lname,memId,gender,age,Membership_fee,Silver_sneaker_member,count);
System.exit(0);
}//end of main method
    public static void start_program(String []fname,String []lname,int []memId,String []gender,
    int[] age, double[] Membership_fee,int[] Silver_sneaker_member,int count) {
     String newLine;
     try
          BufferedReader Member_file=new BufferedReader (new FileReader("member.dat"));
          int i;
          for (i=0; i<=count; ++i)
          while((newLine = Member_file.readLine()) !=null)
               StringTokenizer delimiter = new StringTokenizer(newLine,"#");
               count=count+1;
              fname[count]=delimiter.nextToken();
              lname[count]=delimiter.nextToken();
              memId[count]=Integer.parseInt(delimiter.nextToken());
              gender[count]=delimiter.nextToken();
              age[count]=Integer.parseInt(delimiter.nextToken());
              Membership_fee[count]=Double.parseDouble(delimiter.nextToken());
              Silver_sneaker_member[count]=Integer.parseInt(delimiter.nextToken());
     }//end while loop
          }//end for
     Member_file.close();
     }catch (IOException error)
     // there was an error on the file writing
     System.out.println("Error on file read " + error);
     }//error end
     }//end of start program member method
//BEGINNING OF MENU METHOD
     public static double Menu(){
     double menuAnswer;
     String output = "The Pittsburgh YMCA"+
      "\n" +"1. Add/Modify Member Data";
     String menuDataString =JOptionPane.showInputDialog(
      "The Pittsburgh YMCA"+
      "\n"+
      "\n"+"1. Add/Modify Member Data"+
      "\n"+"2. Add/Modify Class Enrollments"+
      "\n"+"3. Report Section"+
      "\n"+"4. Exit the System"+
      "\n"+
      "\n"+"Please Make Your Selection>"+
      "\n");
     menuAnswer = Double.parseDouble(menuDataString);
    return menuAnswer;
     }//end of menu method
//beginning of Modify Member
     public static int Modify_Member(String[]fname,String[]lname,int count,
      int[] memId,String[]gender,int[]age, double[]Membership_fee,int[]Silver_sneaker_member)
     double menuQuestion=0;
      int modMember=0;
      String output = "";
     String menuDataString =JOptionPane.showInputDialog(
      "What do you wish to do?"+
      "\n"+
      "\n"+"1. Add a member?"+
      "\n"+"2. Modify a member?"+
      "\n"+"3. Delete a member?"+
      "\n"+
      "\n"+"Please Make Your Selection>"+
      "\n");
     menuQuestion = Double.parseDouble(menuDataString);
     if(menuQuestion==1)
     int continueit=1;
     String svalue;
     String memAge;
     String sneakAns;
     String memberFee;
     while(continueit==1)
     count=count+1;
     fname[count]= JOptionPane.showInputDialog(null,
             "Enter First Name"," ",
      JOptionPane.QUESTION_MESSAGE);
      output="Enter Last Name";
      lname[count]=JOptionPane.showInputDialog (null,
             output," ",
      JOptionPane.QUESTION_MESSAGE);
      output="Enter 3 Digit ID";
      svalue=JOptionPane.showInputDialog (null,
             output," ",
      JOptionPane.QUESTION_MESSAGE);
      memId[count]=Integer.parseInt(svalue);
      output="Enter Gender M or F";
      gender[count]=JOptionPane.showInputDialog (null,
             output," ",
      JOptionPane.QUESTION_MESSAGE);
      output="Enter Age";
      memAge=JOptionPane.showInputDialog (null,
             output," ",
      JOptionPane.QUESTION_MESSAGE);
      age[count]=Integer.parseInt(memAge);
      output="Enter Membership Fee";
      memberFee=JOptionPane.showInputDialog (null,
             output," ",
      JOptionPane.QUESTION_MESSAGE);
      Membership_fee[count]=Double.parseDouble (memberFee);
      output="Silver Sneaker Member? 1=yes 2=no";
      sneakAns=JOptionPane.showInputDialog (null,
             output," ",
      JOptionPane.QUESTION_MESSAGE);
      Silver_sneaker_member[count]= Integer.parseInt(sneakAns);
      output="Enter 1 to continue, 0 to stop";
      svalue=JOptionPane.showInputDialog(null,
            output," ",JOptionPane.QUESTION_MESSAGE);
      continueit=Integer.parseInt (svalue);
      }//while loop
     }//end if
     if(menuQuestion==2)
     int i=0;
       String optionTwoDataString =JOptionPane.showInputDialog(
      "Please enter Member ID");
      modMember=Integer.parseInt(optionTwoDataString);
      if (modMember==memId)
     System.out.print(fname[i]+" "+lname[i]);
}//end Modify_member option 2 if statemet
}//end option 2 if from Modify_member method
return count;
}//end of modify member method
public static void Modify_Enrollment() {
     System.out.print("the Modify Enrollment menu has been called");
}//end of modify enrollment method
//REPORT METHOD
public static int Report(String []fname,String []lname,String[]gender,
int[]memId,int count,int[]age,double[]Membership_fee,int[]Silver_sneaker_member,double total)
int i;
double repAnswer=-1;
String ageAnswer;
String genderAns;
String M="";
int genAns;
int ageCount;
while (repAnswer !=10)
double reportMenu;
String repMenuString =JOptionPane.showInputDialog(
"REPORT MENU"+
"\n"+
"\n"+"1. All membership information"+
"\n"+"2. All Silver Sneaker members"+
"\n"+"3. All members above a specific age"+
"\n"+"4. Total membership fees paid"+
"\n"+"5. All male or female members"+
"\n"+"6. Report 6"+
"\n"+"7. Report 7"+
"\n"+"8. Report 8"+
"\n"+"9. Report 9"+
"\n"+"10. Exit Report Menu"+
"\n"+
"\n"+
"\n"+"Please make your selection >");
repAnswer = Double.parseDouble(repMenuString);
if(repAnswer==1)
for (i=0; i<=count; ++i)
System.out.println(fname[i]+" "+lname[i]+" "+memId[i]+" "+gender[i]+" "+age[i]+" "+
Membership_fee[i]+" "+Silver_sneaker_member[i]);
}//end for statement option 1
}//end if option 1
if(repAnswer==2)
for (i=0; i<=count; ++i)
if(Silver_sneaker_member[i]==1)
System.out.println (fname[i]+" "+lname[i]);
}//end if statement option two
if(repAnswer==3)
String output=" ";
output="Enter age cutoff";
ageAnswer=JOptionPane.showInputDialog (null,
output," ",
JOptionPane.QUESTION_MESSAGE);
ageCount=Integer.parseInt(ageAnswer);
for (i=0; i<=count; ++i)
if(age[i]>=ageCount)
System.out.println(fname[i] + " " +lname[i]);
}//end option 3
//begin option 4
if (repAnswer==4)
for (i=0; i<=count; ++i)
System.out.println("First Name"+" " +fname[i]+" "+"Last Name"+
" "+lname[i]+" "+"Fee"+" "+Membership_fee[i]);
total += Membership_fee[i];
}//end option 4
System.out.println( "Membership Fee Total: "+ total);
//begin option 5
if (repAnswer==5)
String output;
output="For Male Members 1 for Female Members 2";
genderAns= JOptionPane.showInputDialog (null,
output," ",
JOptionPane.QUESTION_MESSAGE);
genAns=Integer.parseInt(genderAns);
for (i=0; i<=count; ++i)
if (genAns==1)
for (i=0; i<=count; ++i)
if(gender[i].startsWith("M"))
System.out.println (fname[i]+" "+lname[i]);
if(genAns==2)
for (i=0; i<=count; ++i)
if(gender[i].startsWith("F"))
System.out.println(fname[i]+" "+lname[i]);
//end option 5
}//end while
return count;
}//end of Report method
//begin exit program method
public static void exit_program(String []fname,String []lname,int[]memId,String []gender,
int[] age, double[]Membership_fee,int[] Silver_sneaker_member,int count) {
     int i;
     for (i=0; i<=count; ++i)
     try
          BufferedWriter Member_file = new BufferedWriter(new FileWriter("member.dat"));
          for(i=0; i<=count; ++i)
          System.out.println(fname[i] + "#" + lname[i] + "#"+ memId[i] + "#" + gender[i] + "#" +
          age[i] + "#" + Membership_fee + "#" + Silver_sneaker_member[i]);
               Member_file.write(fname[i] + "#" + lname[i] + "#"+
          memId[i] + "#" + gender[i] + "#" + age[i] + "#" + Membership_fee + "#" +
          Silver_sneaker_member[i]);
               Member_file.newLine();
          }//end for loop
          Member_file.close();
     }//end of try
     catch (IOException error)
          System.out.println("Error on file write "+ error);
     }//end error
}//end of exit method
}//end of public class ymcaProject
Output is Ray#Cavender#111#M#40#[D@503429#1 between last and second to last is the Membership_id and is coming out as garbage.

System.out.println(fname[i] + "#" + lname[i] + "#"+ memId[i] + "#" + gender[i] + "#" +
age[i] + "#" + Membership_fee + "#" + Silver_sneaker_member);
You probably want this to be:
System.out.println(fname[i] + "#" + lname[i] + "#"+ memId[i] + "#" + gender[i] + "#" +
age[i] + "#" + Membership_fee[i] + "#" + Silver_sneaker_member);

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<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Raymond Hayes Jr ([email protected]):
Nothing fancy 'cause I'm half asleep but I used your xml/xsl and it seemed to work. No errors anyway. This is what I put together in JDeveloper 3.2
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import javax.servlet.*;
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import java.net.*;
import java.util.*;
import oracle.xml.parser.v2.*;
public class CuriosityKilledTheCat extends HttpServlet {
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XSLProcessor xp = new XSLProcessor();
XMLDocument xd = new XMLDocument ();
XMLDocumentFragment xf = new XMLDocumentFragment();
xf = xp.processXSL ( xsl , new URL ( "file:///c:\\temp\\input.xml") , null );
System.out.println ( "here" );
xd.appendChild( xf );
xd.print ( response.getOutputStream() );
catch ( Exception e )
System.out.println ( e.getMessage() );
* Get Servlet information
* @return java.lang.String
public String getServletInfo() {
return "demo.CuriosityKilledTheCat Information";
}<HR></BLOCKQUOTE>
null

Parse a line of string to double

Hi all:
I have a file that contains a matrix of double values, and I need to parse each of this value and store them in double format. Each line in the file contains the same number of values, and each value within a line is seperated by a space character. Currently, what I am thinking is first read in a line, then use regular expression to find matches one by one, then parse each of the matched string to double using Double.valueof(String string). I wonder is there any better method to do this?

Use String.split() with a whitespace regex, and then parse each result.

Double parsing and significant digits

Does anyone know why I am getting extra significant digits from the parse methods and how I get around this problem?
Code:
double value = Double.parseDouble("12398.7");
System.out.println("double="+value);
value = value/100.0;
System.out.println("double/100.0="+value);
double fvalue = Float.parseFloat("12398.7");
System.out.println("float="+fvalue);
fvalue = fvalue/100.0;
System.out.println("float/100.0="+fvalue);
Output:
double=12398.7
double/100.0=123.98700000000001
float=12398.7001953125
float/100.0=123.987001953125
Here�s what I wanted:
double=12398.7
double/100.0=123.987
float=12398.7
float/100.0=123.987

Does anyone know why I am getting extra significant
digits from the parse methods and how I get around
this problem?Yes, many people know why you are getting extra digits and how to get around this problem. See the thread titled "Why ?? 0.4 + 0.3 + 0.3 = 0.9999999999999999", or any of hundreds of other threads about binary math.

Parsing the integer/ double values

Hai Guys,
I am writing a code in java for my work,
The problem i am facing:
"System.out.println("temp_predictions,instances.instance(i) " +temp_predictions[i]+ " \t" + instances.instance(i))
prints the results as this
{code}
temp_predictions[i],instances.instance(i) [D@186c6b 21,1
{code}
i need to have the original value of [D@186c6b
. how can i convert to integer or double ?
{code} private double evaluatePredictions(Instances instances,double[][] temp_predictions, int metric) throws Exception {
Evaluation eval = new Evaluation(instances);
for (int i = 0; i < instances.numInstances(); ++i) {
eval.evaluateModelOnceAndRecordPrediction(temp_predictions[i],instances.instance(i));
System.out.println("temp_predictions[i],instances.instance(i) " +temp_predictions[i]+ instances.instance(i));
System.out.println("EnsembleMetricHelper.getMetric(eval, metric) " +EnsembleMetricHelper.getMetric(eval, metric));
return EnsembleMetricHelper.getMetric(eval, metric);
}{code}
Edited by: svpriyan00 on Nov 3, 2009 2:47 PM

Eh? temp_predictions is an array of an array of doubles. Your code is printing out one of those arrays of Doubles. What you're seeing in your output is what an array of doubles prints as.
If you already have an array of doubles, there's no parsing that needs to be done. Just array indexing.
You say you want to convert to an integer or double. You have an array of doubles and want to have just one double. That doesn't really make sense. There are a lot of ways you could get a single double from an array. You could just take the first one. Or the last one. Or add them all up. Or take the average.
What exactly are you trying to accomplish?

Parsing double

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