Float font size is not working in OpenJDK

Question

Float font size is not working in OpenJDK. Seems that the font size is rounded off while calculating string bounds e.g. 11.4 -> 11 & 11.5 -> 12 However in oracle jdk its working perfectly.

Any idea how to resolve this in OpenJDK 8?

Program:

    import java.awt.Font;
    import java.awt.font.FontRenderContext;
    import java.awt.geom.Rectangle2D;

    public class TestFont {
        public static void main(String  []args){
            FontRenderContext frc = new FontRenderContext(null, true, true);
            Font font = new Font("Courier New",0,(int)11.5);
            font = font.deriveFont(11.5f);
            Rectangle2D bound = font.getStringBounds("PAGE",0,4, frc);
            System.out.println("Char width:"+ bound.getWidth() / 4);
            Font2D font2D = FontUtilities.getFont2D(font);
            System.out.println("Font2D:" + font2D.toString());
        }
    }

Results:

OpenJDK 7,8,9:
Char width:7.201171875
Font2D:** TrueType Font: Family=Courier New Name=Courier New style=0 fileName=C:\windows\Fonts\cour.ttf

Oracle JDK 8:
Char width:6.901123046875
Font2D:** TrueType Font: Family=Courier New Name=Courier New style=0 fileName=C:\windows\Fonts\cour.ttf

Answer 1

That 's what i was thinking ^^. here is a topic related to your issue :

Fonts slightly wider in OpenJDK vs OracleJDK