License text 

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER 
 * Copyright  2008, 2010 Oracle and/or its affiliates.  All rights reserved. 
 * Use is subject to license terms.
 * 
 * This file is available and licensed under the following license:
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met: 
 * 
 *   * Redistributions of source code must retain the above copyright notice, 
 *     this list of conditions and the following disclaimer. 
 *
 *   * Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *
 *   * Neither the name of Oracle Corporation nor the names of its contributors 
 *     may be used to endorse or promote products derived from this software 
 *     without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

    

package interesting.view;

import javafx.scene.Node;
import javafx.scene.shape.Rectangle;
import javafx.scene.paint.Color;
import javafx.scene.layout.Container;

def arcwidthheight = 5;
def progheight = 4;
def rectheight = 2;
def progbgXY = 0;
def progbarX = 0;
def progbarY = 1;

public class ProgressBar extends Container {
    public var progress:Number = 0.0;
    public var pbwidth = 150.0;
    var progressBG : Rectangle = Rectangle {
        x: progbgXY
        y: progbgXY
        width: bind pbwidth
        height: progheight
        fill: Color.BLACK
        arcWidth: arcwidthheight
        arcHeight: arcwidthheight
    }
        
    var progressBar : Rectangle = Rectangle {
        x: progbarX
        y: progbarY
        height: rectheight
        arcWidth: arcwidthheight
        arcHeight: arcwidthheight
        width: bind ((pbwidth * progress)/100.0)
        fill: Color.rgb(0, 107, 175)
    }
    init{
        blocksMouse = true;
        children= [
            progressBG,
            progressBar
        ]
    }
}
JavaFX Sample
License text 

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER 
 * Copyright  2008, 2010 Oracle and/or its affiliates.  All rights reserved. 
 * Use is subject to license terms.
 * 
 * This file is available and licensed under the following license:
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met: 
 * 
 *   * Redistributions of source code must retain the above copyright notice, 
 *     this list of conditions and the following disclaimer. 
 *
 *   * Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *
 *   * Neither the name of Oracle Corporation nor the names of its contributors 
 *     may be used to endorse or promote products derived from this software 
 *     without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

    

package interesting.view;

import javafx.scene.Node;
import javafx.scene.shape.Rectangle;
import javafx.scene.paint.Color;
import javafx.scene.layout.Container;

def arcwidthheight = 5;
def progheight = 4;
def rectheight = 2;
def progbgXY = 0;
def progbarX = 0;
def progbarY = 1;

public class ProgressBar extends Container {
    public var progress:Number = 0.0;
    public var pbwidth = 150.0;
    var progressBG : Rectangle = Rectangle {
        x: progbgXY
        y: progbgXY
        width: bind pbwidth
        height: progheight
        fill: Color.BLACK
        arcWidth: arcwidthheight
        arcHeight: arcwidthheight
    }
        
    var progressBar : Rectangle = Rectangle {
        x: progbarX
        y: progbarY
        height: rectheight
        arcWidth: arcwidthheight
        arcHeight: arcwidthheight
        width: bind ((pbwidth * progress)/100.0)
        fill: Color.rgb(0, 107, 175)
    }
    init{
        blocksMouse = true;
        children= [
            progressBG,
            progressBar
        ]
    }
}