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

/*
 * Copyright (c) 2011, 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;

import com.sun.javafx.geom.transform.BaseTransform;

public class FontStrikeDesc {

// We don't need to reference the font resource here so
    // long as the map is stored on a resource.
    float[] matrix;
    float size;
    int aaMode; // grey scale or LCD.
    // TBD .. other rendering attributes.

public FontStrikeDesc(float fontSize, BaseTransform transform, int aaMode) {

//Affine2D tx2d = new Affine2D(transform);
        //tx2d.scale((double)fontSize, (double)fontSize);
        BaseTransform tx2d = transform;
        size = fontSize;
        this.aaMode = aaMode;
        matrix = new float[4];
        matrix[0] = (float)tx2d.getMxx();
        matrix[1] = (float)tx2d.getMxy();
        matrix[2] = (float)tx2d.getMyx();
        matrix[3] = (float)tx2d.getMyy();
    }

private int hash;
    @Override
    public int hashCode() {
        if (hash == 0) {
            hash =
                aaMode+
                Float.floatToIntBits(size)+
                Float.floatToIntBits((float)matrix[0])+
                Float.floatToIntBits((float)matrix[1])+
                Float.floatToIntBits((float)matrix[2])+
                Float.floatToIntBits((float)matrix[3]);
        }
        return hash;
    }

/*
     * Seems like in some performance cases, its possible
     * to measure a difference between comparing floats
     * and doubles. I think if they are equal as floats
     * that's enough precision. Maybe we don't even need
     * that much precision.
     */
    @Override
    public boolean equals(Object o) {
        FontStrikeDesc other = (FontStrikeDesc)o;
        return
            this.aaMode == other.aaMode &&
            this.matrix[0] == other.matrix[0] &&
            this.matrix[1] == other.matrix[1] &&
            this.matrix[2] == other.matrix[2] &&
            this.matrix[3] == other.matrix[3] &&
            this.size == other.size;
    }

}

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