javabeans

say i have a java bean/an entity with 100 fields (inherited or not it is not relevant in this case). After update operations - in a transaction, i want to determine which fields are modified to track updates like a CVS. What is the easiest way to do this? Any Framework suggestion? Should i make two instances of this object and iterate over all fields and match the values of fields ? How would the best equals method seem in such situations ? The following equals() seems very awkward : return (field1.equals(o.field1)) && (field2.equals(o.field2)) && (field3.equals(o.field3)) && ... (field100

I am trying to make my first bean in Spring but got a problem with loading a context. I have a configuration XML file of the bean in src/main/resources. I receive the following IOException: Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [src/main/resources/beans.xml]; nested exception is java.io.FileNotFoundException: class path resource [src/main/resources/beans.xml] cannot be opened because it does not exist but I don't get it, since I do the following code test: File f = new File("src/main

Is there any way to retrieve a session from a POJO? Or ultimately to retrieve a bean from a POJO. To clarify: Basically I am creating a bean from a servlet and I need to access the properties of that bean from outside of the web container (from a POJO). I cannot pass the request to the pojo; and the request is needed to retrieve the session. More specifically I have a web application that uses the Cactus framework to run JUnit tests from a web interface. However the servlet that invokes the JUnit test runner is compiled in a jar; I added extra drop down menus to change settings from which the

Is there any standard way to access Java Bean Property like class A { private String name; public void setName(String name){ this.name = name; } public String getName(){ return this.name; } } So can I access this java bean property name using Reflection API so that when I change the value of property the methods of getName and setName are called automatically when I set and get values of that property What you need is the BeanInfo / Introspector mechanism (see Bozho's answer). However, it's hell to use this directly, so you can use one of the Libraries that offer property-based access. The

I use JavaFX NumberBindings in order to calculate certain values. Initially everything works as expected. After a rather small amount of time, however, the binding just stops working. I don't receive an Exception, either. I've tried several bindings, as well as high- and low-level approaches. Even the calculation itself (when overridden) just stops and isn't called anymore. I've also updated to the latest JDK (1.8.0_05) and rebuilt/restarted everything. The following Minimal Working Example illustrates the problem. It should System.out.println the current width of the main window to STDOUT.