According to the spec of TextAttribute, TextAttribute.FONT is "A way for users to override the resolution of font attributes into a Font, or force use of a particular Font instance".
Constructor Font(Map) ignores this attribute. See example below:
========================= Test57.java =========================
import java.awt.*;
import java.util.*;
import java.awt.font.*;

public class Test57 {
    public static void main(String[] args) {
        Test57 test = new Test57();
        test.go();
    }

    public void go() {
        Font font = new Font("SomeName", Font.BOLD, 24);

        Hashtable hash = new Hashtable(1);
        hash.put(TextAttribute.FONT, font);

        font = new Font((Map) hash);


        if (!font.getName().equalsIgnoreCase("SomeName")) {
            System.out.println("getName returned \"" + font.getName() + "\" when \"SomeName\" " +
                        " expected");
        }
        if (font.getStyle() != Font.BOLD) {
            System.out.println("getStyle returned " + font.getStyle() + " when " +
                        Font.BOLD + " expected");
        }
        if (font.getSize() != 24) {
            System.out.println("getSize returned " + font.getSize() + " when 24 " +
                        " expected");
        }
        System.out.println("Done");
    }
}
======================= output ====================================
getName returned "Dialog" when "SomeName" expected
getStyle returned 0 when 1 expected
getSize returned 12 when 24 expected
Done
====================================================================
###@###.### 10/25/04 16:13 GMT