Comments on: java.util.IllegalFormatConversionException when using System.out.format() http://dobrzanski.net/2008/05/02/javautilillegalformatconversionexception-when-using-systemoutformat/ blog for developers Thu, 09 Sep 2010 11:58:58 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Raja Nagendra Kumar http://dobrzanski.net/2008/05/02/javautilillegalformatconversionexception-when-using-systemoutformat/comment-page-1/#comment-28071 Raja Nagendra Kumar Mon, 28 Dec 2009 12:22:22 +0000 http://dobrzanski.net/?p=85#comment-28071 As a addendum to the same error, we see the following can happen due to lack of conversion from long to float. for a code like this boolean lInMBSize = (sizeCount / CommonConst.MEGA_BYTES) > 0; StringBuffer sb = new StringBuffer(); Formatter fm = new Formatter(sb); fm.format("\n%-16s\t%-6d\t%15.2f %s\t%-16d", ext, fileCount, lInMBSize ? (sizeCount / CommonConst.MEGA_BYTES) : (sizeCount / CommonConst.KB_BYTES), lInMBSize ? "MB" : "kb", lineCount); return sb.toString(); We are seeing similar error in this case for converting long to float..the value of long passed is 2.. Hope long to be convertible to float as they are compatible. java.util.IllegalFormatConversionException: f != java.lang.Long at java.util.Formatter$FormatSpecifier.failConversion(Formatter.java:399 9) at java.util.Formatter$FormatSpecifier.printFloat(Formatter.java:2722) at java.util.Formatter$FormatSpecifier.print(Formatter.java:2667) at java.util.Formatter.format(Formatter.java:2433) at java.util.Formatter.format(Formatter.java:2367) at com.tejasoft.ant.common.cm.CMInfo.toString(CMInfo.java:99) at java.lang.String.valueOf(String.java:2826) As a addendum to the same error, we see the following can happen due to lack of conversion from long to float.

for a code like this

boolean lInMBSize = (sizeCount / CommonConst.MEGA_BYTES) > 0;
StringBuffer sb = new StringBuffer();
Formatter fm = new Formatter(sb);
fm.format(“\n%-16s\t%-6d\t%15.2f %s\t%-16d”,
ext,
fileCount,
lInMBSize ?
(sizeCount / CommonConst.MEGA_BYTES) :
(sizeCount / CommonConst.KB_BYTES),
lInMBSize ? “MB” : “kb”,
lineCount);
return sb.toString();

We are seeing similar error in this case for converting long to float..the value of long passed is 2..

Hope long to be convertible to float as they are compatible.

java.util.IllegalFormatConversionException: f != java.lang.Long
at java.util.Formatter$FormatSpecifier.failConversion(Formatter.java:399
9)
at java.util.Formatter$FormatSpecifier.printFloat(Formatter.java:2722)
at java.util.Formatter$FormatSpecifier.print(Formatter.java:2667)
at java.util.Formatter.format(Formatter.java:2433)
at java.util.Formatter.format(Formatter.java:2367)
at com.tejasoft.ant.common.cm.CMInfo.toString(CMInfo.java:99)
at java.lang.String.valueOf(String.java:2826)

]]> By: Tahir http://dobrzanski.net/2008/05/02/javautilillegalformatconversionexception-when-using-systemoutformat/comment-page-1/#comment-27895 Tahir Thu, 24 Dec 2009 10:10:01 +0000 http://dobrzanski.net/?p=85#comment-27895 Thanks, It is much clear and to the point. Precise and concise without any unnecessary stuff Thanks, It is much clear and to the point.
Precise and concise without any unnecessary stuff

]]> By: deval mathur http://dobrzanski.net/2008/05/02/javautilillegalformatconversionexception-when-using-systemoutformat/comment-page-1/#comment-11289 deval mathur Mon, 17 Nov 2008 06:46:33 +0000 http://dobrzanski.net/?p=85#comment-11289 it was helpful.... i was struck at it at one point....gud it was helpful….
i was struck at it at one point….gud

]]> By: Jeff http://dobrzanski.net/2008/05/02/javautilillegalformatconversionexception-when-using-systemoutformat/comment-page-1/#comment-5694 Jeff Fri, 13 Jun 2008 00:44:01 +0000 http://dobrzanski.net/?p=85#comment-5694 Thanks soooooooooooo much Jarosław for this very helpful help. Thanks soooooooooooo much Jarosław for this very helpful help.

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