Java DecimalFormat: Difference between revisions
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* http://docs.oracle.com/javase/7/docs/api/java/text/DecimalFormat.html | * http://docs.oracle.com/javase/7/docs/api/java/text/DecimalFormat.html | ||
=Internal= | =Internal= | ||
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* [[java String.format()|String.format()]] | * [[java String.format()|String.format()]] | ||
=Overview= | |||
<font color=red>'#' means display the digit if ? It does not fill up with space.</font> | <font color=red>'#' means display the digit if ? It does not fill up with space.</font> | ||
=Simplest= | |||
<pre> | |||
private static final Format THREAD_NUMBER_FORMAT = new DecimalFormat("000"); | |||
... | |||
THREAD_NUMBER_FORMAT.format(index); | |||
</pre> | |||
=Float/Double with Two Decimals= | |||
<syntaxhighlight lang='java'> | |||
private static final Format AVERAGE_DURATION_FORMAT = new DecimalFormat("#.00"); | |||
... | |||
AVERAGE_DURATION_FORMAT.format(value); | |||
</syntaxhighlight> | |||
=Percentage= | |||
Multiply with 100 and display as percentage, with the amount of decimals specified: | |||
<syntaxhighlight lang='java'> | |||
private static final Format PERCENTAGE_FORMAT = new DecimalFormat("%0.00"); | |||
... | |||
PERCENTAGE_FORMAT.format(value); | |||
</syntaxhighlight> | |||
Latest revision as of 23:51, 6 February 2018
External
Internal
Overview
'#' means display the digit if ? It does not fill up with space.
Simplest
private static final Format THREAD_NUMBER_FORMAT = new DecimalFormat("000");
...
THREAD_NUMBER_FORMAT.format(index);
Float/Double with Two Decimals
private static final Format AVERAGE_DURATION_FORMAT = new DecimalFormat("#.00");
...
AVERAGE_DURATION_FORMAT.format(value);
Percentage
Multiply with 100 and display as percentage, with the amount of decimals specified:
private static final Format PERCENTAGE_FORMAT = new DecimalFormat("%0.00");
...
PERCENTAGE_FORMAT.format(value);