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Postsdbo
POCreate an instance of a class and initialize all its fields
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  1. POCreate an instance of a class and initialize all its fields
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    copied!<p>I want to create an instance of a class, but I also need to initialize also all its fields recursively.</p> <p>The code you see related do the objectFactory is because some of this classes could be JAXB classes, so for every package there is an ObjectFactory with methods like createJaxbObject(....).</p> <p>EDITED:</p> <p>My final solutions is this one:</p> <pre><code>public Object getInstance(Class&lt;?&gt; instanceClass, Boolean simple, String jaxbName) { Object instance = null; try { if (instanceClass.isPrimitive()) return primitiveValues.get(instanceClass.getName()); if (List.class.isAssignableFrom(instanceClass)) return new ArrayList(); else if (instanceClass.isEnum()) return instanceClass.getEnumConstants()[0]; else if (instanceClass.isArray()) return java.lang.reflect.Array.newInstance(instanceClass, 1); else if (BigInteger.class.isAssignableFrom(instanceClass)) return new BigInteger("0"); else if (instanceClass.equals(String.class)) return ""; else if (instanceClass.equals(Boolean.class)) return false; else if (instanceClass.equals(EntityObjectStringType.class)) return new EntityObjectStringType(); else if (JAXBElement.class.isAssignableFrom(instanceClass)) { try { Method m = null; Class&lt;?&gt; objFactoryClass = null; Iterator&lt;String&gt; it = EditorServlet.objectFactories .iterator(); Object of = null; while (it.hasNext()) { objFactoryClass = Class.forName(it.next()); of = objFactoryClass.getConstructor().newInstance(); m = getMethodFromObjectFactory(objFactoryClass, jaxbName); if (m != null) if (m.getParameterTypes().length &gt; 0) break; } Object jaxbElement = getInstance(m.getParameterTypes()[0], m.getParameterTypes()[0].getSimpleName()); return m.invoke(of, jaxbElement); } catch (NoSuchMethodException e) { logger.error("JAXB NoSuchMethodException"); } } else try { logger.info("Costruttori per " + instanceClass.getName() + " " + instanceClass.getConstructors().length); instance = instanceClass.getConstructor().newInstance(); } catch (NoSuchMethodException noSuchMethodException) { logger.error("getConstructors NoSuchMethodException"); } } catch (IllegalArgumentException e) { logger.error("IllegalArgumentException " + instanceClass.getName()); } catch (SecurityException e) { logger.error("SecurityException " + instanceClass.getName()); } catch (InstantiationException e) { logger.error("InstantiationException " + instanceClass.getName() + " " + instanceClass.isPrimitive()); } catch (IllegalAccessException e) { logger.error("IllegalAccessException " + instanceClass.getName()); } catch (InvocationTargetException e) { logger.error("InvocationTargetException " + instanceClass.getName()); } catch (ClassNotFoundException e) { logger.error("ClassNotFoundException " + instanceClass.getName()); } if (!simple) { for (Field field : instanceClass.getDeclaredFields()) { try { Object fieldInstance = getInstance(field.getType(), field.getName()); field.setAccessible(true); field.set(instance, fieldInstance); } catch (IllegalArgumentException e) { logger.error("IllegalArgumentException " + instanceClass.getName()); } catch (IllegalAccessException e) { logger.error("IllegalAccessException " + instanceClass.getName()); } } } return instance; } </code></pre>
 

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