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DecimalFormat drops the 0s after decimal point. I need to keep them.  RSS feed

 
Sri Kor
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Hi,

I have to show the number as is without dropping the end 0s after decimal.

e.g. I need to show 12 as 12, 13.0 as 13.0 14.50 as 14.50. But the decimal format removes the last zero.

Unfortunately, JFreeChart tooltip logic requires a decimal format to be specified to do anything like this.

Any idea how we can achieve this.

thanks in advance.
 
Henry Wong
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What do you mean by "I need to keep them"? Are you using DecimalFormat to parse a double from a string? And is now wondering why when you print the double, the format of the double is gone?

If you are... A double is a value. It contains no formatting what-so-ever. So, there is no such a thing as "keep them" -- any formatting is lost when the string is converted to a double.

Henry
 
Mike Simmons
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How are you specifying the DecimalFormat now? Have you looked at the API for DecimalFormat? If it's something like

try instead
 
Sri Kor
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Mike Simmons wrote:How are you specifying the DecimalFormat now? Have you looked at the API for DecimalFormat? If it's something like

try instead


I can't use formatting like this. Because, if I have a number like 29 I have to show it as 29 in the JFreeChart. If I use a format like the above, it will change the number 29 to 29.00.
 
Sri Kor
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Henry Wong wrote:What do you mean by "I need to keep them"? Are you using DecimalFormat to parse a double from a string? And is now wondering why when you print the double, the format of the double is gone?

If you are... A double is a value. It contains no formatting what-so-ever. So, there is no such a thing as "keep them" -- any formatting is lost when the string is converted to a double.

Henry


By default a number like 12.20 is shown as 12.2. But, I need to show it as 12.20. If the number is 12.220, I need to show 12.220. But, JFreeChart which uses decimal format drops 0 at the end.
 
Rob Spoor
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You could consider using BigDecimal. If you create that using "12.220" it will keep being 12.220, including when calling it's toString method.
 
It is sorta covered in the JavaRanch Style Guide.
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