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Bug
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Resolution: Duplicate
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P3
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None
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8u11
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x86_64
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linux
FULL PRODUCT VERSION :
java version "1.8.0_11"
Java(TM) SE Runtime Environment (build 1.8.0_11-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.11-b03, mixed mode)
ADDITIONAL OS VERSION INFORMATION :
Linux nelson 3.14.9-200.fc20.x86_64 #1 SMP Thu Jun 26 21:40:51 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
A DESCRIPTION OF THE PROBLEM :
NumberFormat doesn't round correctly in some corner cases.
Formatting the value 0.026 with maxFractionDigits=2 and RoundingMode.HALF_UP results in "0.02".
See the failing test case provided in "Steps to Reproduce"
REGRESSION. Last worked in version 7u60
ADDITIONAL REGRESSION INFORMATION:
java version "1.7.0_60"
OpenJDK Runtime Environment (fedora-2.5.0.1.fc20-x86_64 u60-b30)
OpenJDK 64-Bit Server VM (build 24.60-b09, mixed mode)
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Failing test:
NumberFormat format = DecimalFormat.getInstance( Locale.ENGLISH );
format.setMaximumFractionDigits( 2 );
format.setMinimumFractionDigits( 2 );
format.setRoundingMode( RoundingMode.HALF_UP );
Assert.assertEquals( "0.02", format.format( 0.024 ) );
Assert.assertEquals( "0.03", format.format( 0.025 ) );
Assert.assertEquals( "0.03", format.format( 0.026 ) ); // <- Fails! Results in "0.02"
EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Formatting the value 0.026 with maxFractionDigits=2 and RoundingMode.HALF_UP should result in "0.03".
ACTUAL -
Formatting the value 0.026 with maxFractionDigits=2 and RoundingMode.HALF_UP results in "0.02".
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
NumberFormat format = DecimalFormat.getInstance( Locale.ENGLISH );
format.setMaximumFractionDigits( 2 );
format.setMinimumFractionDigits( 2 );
format.setRoundingMode( RoundingMode.HALF_UP );
Assert.assertEquals( "0.02", format.format( 0.024 ) );
Assert.assertEquals( "0.03", format.format( 0.025 ) );
Assert.assertEquals( "0.03", format.format( 0.026 ) ); // <- Fails! Results in "0.02"
---------- END SOURCE ----------
java version "1.8.0_11"
Java(TM) SE Runtime Environment (build 1.8.0_11-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.11-b03, mixed mode)
ADDITIONAL OS VERSION INFORMATION :
Linux nelson 3.14.9-200.fc20.x86_64 #1 SMP Thu Jun 26 21:40:51 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
A DESCRIPTION OF THE PROBLEM :
NumberFormat doesn't round correctly in some corner cases.
Formatting the value 0.026 with maxFractionDigits=2 and RoundingMode.HALF_UP results in "0.02".
See the failing test case provided in "Steps to Reproduce"
REGRESSION. Last worked in version 7u60
ADDITIONAL REGRESSION INFORMATION:
java version "1.7.0_60"
OpenJDK Runtime Environment (fedora-2.5.0.1.fc20-x86_64 u60-b30)
OpenJDK 64-Bit Server VM (build 24.60-b09, mixed mode)
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Failing test:
NumberFormat format = DecimalFormat.getInstance( Locale.ENGLISH );
format.setMaximumFractionDigits( 2 );
format.setMinimumFractionDigits( 2 );
format.setRoundingMode( RoundingMode.HALF_UP );
Assert.assertEquals( "0.02", format.format( 0.024 ) );
Assert.assertEquals( "0.03", format.format( 0.025 ) );
Assert.assertEquals( "0.03", format.format( 0.026 ) ); // <- Fails! Results in "0.02"
EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Formatting the value 0.026 with maxFractionDigits=2 and RoundingMode.HALF_UP should result in "0.03".
ACTUAL -
Formatting the value 0.026 with maxFractionDigits=2 and RoundingMode.HALF_UP results in "0.02".
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
NumberFormat format = DecimalFormat.getInstance( Locale.ENGLISH );
format.setMaximumFractionDigits( 2 );
format.setMinimumFractionDigits( 2 );
format.setRoundingMode( RoundingMode.HALF_UP );
Assert.assertEquals( "0.02", format.format( 0.024 ) );
Assert.assertEquals( "0.03", format.format( 0.025 ) );
Assert.assertEquals( "0.03", format.format( 0.026 ) ); // <- Fails! Results in "0.02"
---------- END SOURCE ----------
- duplicates
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JDK-8039915 Wrong NumberFormat.format() HALF_UP rounding when last digit exactly at rounding position greater than 5
- Closed