Edit C:\Program Files\Java\jdk1.8.0_121\com\sun\javafx\font\directwrite\DWFactory.java

/*
 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
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 */

package com.sun.javafx.font.directwrite;

import com.sun.javafx.font.PrismFontFactory;
import com.sun.javafx.font.PrismFontFile;
import com.sun.javafx.text.GlyphLayout;

public class DWFactory extends PrismFontFactory {

/* Factories (Singletons) */
    private static IDWriteFactory DWRITE_FACTORY = null;
    private static IDWriteFontCollection FONT_COLLECTION = null;
    private static IWICImagingFactory WIC_FACTORY = null;
    private static ID2D1Factory D2D_FACTORY = null;
    private static Thread d2dThread;

public static PrismFontFactory getFactory() {
        /* DirectWrite is not available on Windows Vista SP2 (JFX minimal
         * requirement on Windows) without 'Platform Update'.
         * To workaround this limitation this method first checks if a
         * IDWriteFactory can be created. The DWriteCreateFactory is a dynamic
         * method which fails gracefully (returns NULL) when the system does
         * not support DirectWrite.
         */
        if (getDWriteFactory() == null) {
            /* Returning null here indicates to the PrismFontFactory
             * to fallback to T2K. */
            return null;
        }
        return new DWFactory();
    }

private DWFactory() {
    }

@Override
    protected PrismFontFile createFontFile(String name, String filename,
                                           int fIndex, boolean register,
                                           boolean embedded, boolean copy,
                                           boolean tracked) throws Exception {
        return new DWFontFile(name, filename, fIndex, register,
                              embedded, copy, tracked);
    }

@Override public GlyphLayout createGlyphLayout() {
        return new DWGlyphLayout();
    }

@Override
    protected boolean registerEmbeddedFont(String path) {
        IDWriteFactory factory = DWFactory.getDWriteFactory();
        IDWriteFontFile fontFile = factory.CreateFontFileReference(path);
        if (fontFile == null) return false;
        boolean[] isSupportedFontType = new boolean[1];
        int[] fontFileType = new int[1];
        int[] fontFaceType = new int[1];
        int[] numberOfFaces = new int[1];
        int hr = fontFile.Analyze(isSupportedFontType, fontFileType, fontFaceType, numberOfFaces);
        fontFile.Release();
        if (hr != OS.S_OK) return false;
        return isSupportedFontType[0];
    }

static IDWriteFactory getDWriteFactory() {
        /* Using multi threaded DWrite factory as the JFX thread requires access
         * to DWrite resources for measuring and the Prism thread for rendering */
        if (DWRITE_FACTORY == null) {
            DWRITE_FACTORY = OS.DWriteCreateFactory(OS.DWRITE_FACTORY_TYPE_SHARED);
        }
        return DWRITE_FACTORY;
    }

static IDWriteFontCollection getFontCollection() {
        if (FONT_COLLECTION == null) {
            FONT_COLLECTION = getDWriteFactory().GetSystemFontCollection(false);
        }
        return FONT_COLLECTION;
    }

private static void checkThread() {
        /* Note: It is possible for the correct thread to acquire the factory and
         * hand it over to some other thread. This would be a programming error
         * and it is not check by this implementation. */
        Thread current = Thread.currentThread();
        if (d2dThread == null) {
            d2dThread = current;
        }
        if (d2dThread != current) {
            throw new IllegalStateException(
                    "This operation is not permitted on the current thread ["
                    + current.getName() + "]");
        }
    }

static synchronized IWICImagingFactory getWICFactory() {
        checkThread();
        /* Using single threaded WIC Factory as it should only be used by the rendering thread */
        if (WIC_FACTORY == null) {
            WIC_FACTORY = OS.WICCreateImagingFactory();
        }
        return WIC_FACTORY;
    }

static synchronized ID2D1Factory getD2DFactory() {
        checkThread();
        /* Using single threaded D2D Factory as it should only be used by the rendering thread */
        if (D2D_FACTORY == null) {
            D2D_FACTORY = OS.D2D1CreateFactory(OS.D2D1_FACTORY_TYPE_SINGLE_THREADED);
        }
        return D2D_FACTORY;
    }
}

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