FULL PRODUCT VERSION :
java version "1.8.0_20"
Java(TM) SE Runtime Environment (build 1.8.0_20-b26)
Java HotSpot(TM) 64-Bit Server VM (build 25.20-b23, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Darwin opf.local 13.4.0 Darwin Kernel Version 13.4.0: Sun Aug 17 19:50:11 PDT 2014; root:xnu-2422.115.4~1/RELEASE_X86_64 x86_64

A DESCRIPTION OF THE PROBLEM :
Changes to the fix the rounding behaviour of NumberFormat format() (see http://bugs.java.com/bugdatabase/view_bug.do?bug_id=7131459) appear to have cause new failures in other edge cases.

ADDITIONAL REGRESSION INFORMATION: 
java version "1.7.0_25"
Java(TM) SE Runtime Environment (build 1.7.0_25-b15)
Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Attempt to use HALF_EVEN rounding when printing 12.345 with two decimal places of accuracy. It will give 12.35 instead of 12.34.


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
JVM Version: 1.8.0-ea
Should print (3 sig.fig.) 0.805 got 0.805 - correct? = true
Should print (2 sig.fig.) 12.34 got 12.35 - correct? = true

ACTUAL -
Under Java 7, I get this:

JVM Version: 1.7.0_51
Should print (3 sig.fig.) 0.805 got 0.806 - correct? = false
Should print (2 sig.fig.) 12.34 got 12.34 - correct? = true

But under Java 8:

JVM Version: 1.8.0-ea
Should print (3 sig.fig.) 0.805 got 0.805 - correct? = true
Should print (2 sig.fig.) 12.34 got 12.35 - correct? = false


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.text.NumberFormat;

public class TestNumberFormatRounding {

    public static void main(String[] args) {
        System.out
                .println("JVM Version: " + System.getProperty("java.version"));

        NumberFormat nf = java.text.NumberFormat.getInstance();
        nf.setMaximumFractionDigits(3);
        nf.setMinimumFractionDigits(0);
        String expected = "0.805";
        String result = nf.format(0.8055d);
        System.out.println("Should print (3 sig.fig.) " + expected + " got "
                + result
                + " - correct? = " + (expected.equals(result)));

        nf.setMaximumFractionDigits(2);
        double test = 12.345;
        expected = "12.34";
        result = nf.format(test);
        System.out.println("Should print (2 sig.fig.) " + expected + " got "
                + result
                + " - correct? = " + (expected.equals(result)));
    }

}
---------- END SOURCE ----------