ImageIO.read在多线程执行中引发异常

entity = httpResponse.getEntity(); //httpResponse is apache hc response object
bufImage = ImageIO.read(entity.getContent()); //reading image

Exception in thread \"Thread-3258\" java.lang.NoClassDefFoundError: Could not initialize class sun.java2d.Disposer
    at javax.imageio.stream.FileCacheImageInputStream.<init>(Unknown Source)
    at com.sun.imageio.spi.InputStreamImageInputStreamSpi.createInputStreamInstance(Unknown Source)
    at javax.imageio.ImageIO.createImageInputStream(Unknown Source)
    at javax.imageio.ImageIO.read(Unknown Source)
    at com.example.ImgDownload.run(ImgDownload.java:60)
    at java.lang.Thread.run(Unknown Source)