Conversion of a double value (and perhaps a float) to String
can result in more digits than are absolutely necessary, contrary to the JLS.
Attached is mail giving an number of good examples.

Name: yyT116575 Date: 03/13/2001


java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)

Execute the following class:

public strictfp class Test
{
    static public void main(String [] arg)
    {
        float f = 23.56f;
        double d = f;
        System.out.println(f + " " + d);
    }
}

The result is:

23.56 23.559999465942383

It seems that the results contradicts Java specification that explicitly says
that conversion from float to double in a strctfp expression should not lose
precision
(Review ID: 118747)
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