FULL PRODUCT VERSION :
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

EXTRA RELEVANT SYSTEM CONFIGURATION :
should not be neccessary

A DESCRIPTION OF THE PROBLEM :
when trying to use NumberFormat - 2 fraction-digits - HALF_ROUND_UP I expect that
1.785 is rounded up to 1.79 - this works in Java <= 7
Java 8 (and 9) round down - which is wrong


REGRESSION. Last worked in version 7u76

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the example source code once with JVM7 and JVM8 - you should see the differences


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
JAVA 1.6.0_45 - OK
"c:\Program Files\Java\jdk1.6.0_45\bin\java.exe" TestRoundUp
1.785 ~ 1.79 (Expected: 1.79)
1.795 ~ 1.80 (Expected: 1.80)

JAVA 1.7.0_75 - OK
"c:\Program Files (x86)\Java\jdk1.7.0_75\bin\java.exe" TestRoundUp
1.785 ~ 1.79 (Expected: 1.79)
1.795 ~ 1.80 (Expected: 1.80)
ACTUAL -
JAVA 1.8.0_40 - FAIL
"c:\Program Files\Java\jdk1.8.0_40\bin\java.exe" TestRoundUp
1.785 ~ 1.78 (Expected: 1.79)
1.795 ~ 1.79 (Expected: 1.80)

JAVA 1.8.0_91 - FAIL
"c:\Program Files (x86)\Java\jre1.8.0_91\bin\java.exe" TestRoundUp
1.785 ~ 1.78 (Expected: 1.79)
1.795 ~ 1.79 (Expected: 1.80)

JAVA 1.9 - FAIL
"c:\Program Files\Java\jdk-9\bin\java.exe" TestRoundUp
1.785 ~ 1.78 (Expected: 1.79)
1.795 ~ 1.79 (Expected: 1.80)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.math.RoundingMode;
import java.text.NumberFormat;
import java.util.Locale;

public class TestRoundUp {
public static void main(final String[] args) {
NumberFormat nf = NumberFormat.getInstance(Locale.US); // should not matter here

nf.setMinimumFractionDigits(2);
nf.setMaximumFractionDigits(2);
nf.setRoundingMode(RoundingMode.HALF_UP);

System.out.println("1.785 ~ " + nf.format(1.785) + " (Expected: 1.79)");
System.out.println("1.795 ~ " + nf.format(1.795) + " (Expected: 1.80)");
}
}
---------- END SOURCE ----------

SUPPORT :
YES