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Formattting a Double 1
- Thread starter Funkymatt
- Start date
- Thread starter
- #3
This is still not working. I know that I'm doing something wrong.....?! I would like it always to spit out a long number (no leading zeros) and then my decimal and always two numeric placeholders after the decimal even if there are no pennies in a transaction.
public String formatNumber(double dblNumberIn) throws Exception{
try{
DecimalFormat df1 = new DecimalFormat( "###################.00" ); //Desired format
String strNumberOut = df1.format( dblNumberIn ); //Takes database number and applies the mask above
//should convert a double to ############.## format
return stroutNumber;
}//End Try
catch (Exception e){
System.out.println("formatNumber() function failed within the WriteToFile class. Could not convert double to correct format"
;
System.out.println(e);
throw e;
}//End Catch
}//End formatNumber method
public String formatNumber(double dblNumberIn) throws Exception{
try{
DecimalFormat df1 = new DecimalFormat( "###################.00" ); //Desired format
String strNumberOut = df1.format( dblNumberIn ); //Takes database number and applies the mask above
//should convert a double to ############.## format
return stroutNumber;
}//End Try
catch (Exception e){
System.out.println("formatNumber() function failed within the WriteToFile class. Could not convert double to correct format"
;System.out.println(e);
throw e;
}//End Catch
}//End formatNumber method
-
1
- #4
I'd suggest you writing your customized method otherwise the formatting may not work in every situation.Here is the method I created in my own framework.Hope it helps.
public static String format(double nNumber) {
java.text.NumberFormat nf = java.text.NumberFormat.getInstance();
nf.setMaximumFractionDigits(2);
nf.setGroupingUsed(true);
String temp = nf.format(nNumber);
String formatted="";
for (int i = 0; i < temp.length(); i++){
if ( temp.charAt(i) == ',' ) {
formatted += '.';
}else if ( temp.charAt(i) == '.' ) {
formatted += ',';
}else{
formatted += temp.charAt(i);
}
}
return formatted;
}
Salih Sipahi
Software Engineer.
City of Istanbul Turkey
s.sipahi@sahinlerholding.com.tr
public static String format(double nNumber) {
java.text.NumberFormat nf = java.text.NumberFormat.getInstance();
nf.setMaximumFractionDigits(2);
nf.setGroupingUsed(true);
String temp = nf.format(nNumber);
String formatted="";
for (int i = 0; i < temp.length(); i++){
if ( temp.charAt(i) == ',' ) {
formatted += '.';
}else if ( temp.charAt(i) == '.' ) {
formatted += ',';
}else{
formatted += temp.charAt(i);
}
}
return formatted;
}
Salih Sipahi
Software Engineer.
City of Istanbul Turkey
s.sipahi@sahinlerholding.com.tr
- Thread starter
- #6
Hattusas,
In what particular cases would the formatting given by hologram not work? If I pass in a null value? Or extremely large numbers? Just curious. In this case it would be typical for me to run very very large number through this code...100B or perhaps more.
~M
In what particular cases would the formatting given by hologram not work? If I pass in a null value? Or extremely large numbers? Just curious. In this case it would be typical for me to run very very large number through this code...100B or perhaps more.
~M
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