On upgrading a piece of (1.4-dependent) server-side software from 1.4.2_01 to 1.4.2_14, I began seeing errors that looked like: java.awt.HeadlessException at sun.java2d.HeadlessGraphicsEnvironment.getDefaultScreenDevice (HeadlessGraphicsEnvironment.java:66) at javax.swing.RepaintManager.getVolatileOffscreenBuffer (RepaintManager.java:537) at javax.swing.JComponent.paintDoubleBuffered(JComponent.java:4727) at javax.swing.JComponent.paint(JComponent.java:798) at edu.vt.cs.collab.cork.impl.servlet.CORKServlet.encodeComponentAsJPEG (CORKServlet.java:617) at org.isenhour.fin.inc.CEFChartWebView.writeChartImage(CEFChartWebView.java:97) at org.isenhour.fin.inc.CEFChartWebView.writeStaticContent(CEFChartWebView.java:84) at edu.vt.cs.collab.bridge.DefaultWebViewServlet.doGet(DefaultWebViewServlet.java:95) at edu.vt.cs.collab.cork.impl.servlet.CORKServlet.doGet(CORKServlet.java:293) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) …. The offending code segment was: img = new BufferedImage(sz.width, sz.height, BufferedImage.TYPE_INT_RGB); …