public void addPackageClass(PackageClass pClass) { Document doc; try { doc = getDocument(); } catch (Exception e) { e.printStackTrace(); return; } String name = pClass.getName(); // check if such class exists and remove duplicates Element rootEl = doc.getDocumentElement(); NodeList classEls = rootEl.getElementsByTagName(EL_CLASS); for (int i = 0; i < classEls.getLength(); i++) { Element nameEl = getElementByName((Element) classEls.item(i), EL_NAME); if (name.equals(nameEl.getTextContent())) { rootEl.removeChild(classEls.item(i)); } } Element classNode = doc.createElement(EL_CLASS); doc.getDocumentElement().appendChild(classNode); classNode.setAttribute(ATR_TYPE, PackageClass.ComponentType.SCHEME.getXmlName()); classNode.setAttribute(ATR_STATIC, "false"); Element className = doc.createElement(EL_NAME); className.setTextContent(name); classNode.appendChild(className); Element desrc = doc.createElement(EL_DESCRIPTION); desrc.setTextContent(pClass.getDescription()); classNode.appendChild(desrc); Element icon = doc.createElement(EL_ICON); icon.setTextContent(pClass.getIcon()); classNode.appendChild(icon); // graphics classNode.appendChild(generateGraphicsNode(doc, pClass.getGraphics())); // ports List<Port> ports = pClass.getPorts(); if (!ports.isEmpty()) { Element portsEl = doc.createElement(EL_PORTS); classNode.appendChild(portsEl); for (Port port : ports) { portsEl.appendChild(generatePortNode(doc, port)); } } // fields Collection<ClassField> fields = pClass.getFields(); if (!fields.isEmpty()) { Element fieldsEl = doc.createElement(EL_FIELDS); classNode.appendChild(fieldsEl); for (ClassField cf : fields) { fieldsEl.appendChild(generateFieldNode(doc, cf)); } } // write try { writeDocument(doc, new FileOutputStream(xmlFile)); } catch (FileNotFoundException e) { e.printStackTrace(); } }