According to the JavaBeans specification section 8.3.2: Boolean properties In addition, for boolean properties, we allow a getter method to match the pattern: public boolean is<PropertyName>(); This “isPropertyName” method may be provided instead of a “get<PropertyName>” method, or it may be provided in addition to a “get<PropertyName>” method. In either case, if the is<PropertyName> method … Read more
This is a known issue and unfortunately not trivial to solve without letting all the navigation take place through the view scoped bean in question. See also JSF-impl issue 1839. This does only not cover cases where the enduser changes the URL in browser address bar or closes the window/tab. Their @PreDestroy will also not … Read more
You may want to take a look at Spring’s StringUtils class. It has a number of useful methods to convert a comma separated list to a Set or a String array. You can use any of these utility methods, using Spring’s factory-method framework, to inject a parsed value into your bean. Here is an example: … Read more
I don’t see why an interface can’t define getters and setters. For instance, List.size() is effectively a getter. The interface must define the behaviour rather than the implementation though – it can’t say how you’ll handle the state, but it can insist that you can get it and set it. Collection interfaces are all about … Read more
Yes, Spring can invoke private constructors. If it finds a constructor with the right arguments, regardless of visibility, it will use reflection to set its constructor to be accessible.
Try EqualsBuilder.reflectionEquals() of commons-lang. EqualsBuilder has a set of methods to include all fields, all non-transient fields and all but certain fields. If all else fails, the code could serve as a good example how to implement this.
Changing my initial answer – there is no meaningful difference between the two. The tutorial says that backing beans are later declared as managed beans. So, to summarize: a backing bean is the class out of context a managed bean is the backing bean whenever it is declared to be used with the JSF managed … Read more
For that Apache Commons BeanUtils is often used. BeanUtils.populate(bean, request.getParameterMap()); That’s it. To get a step further, you can adopt a MVC framework which uses Javabeans as models so that you don’t need to worry about them at all, such as JSF or Spring MVC. Unrelated to the concrete question, using getParameterValues() is clumsy in … Read more
The correct answer is getxIndex() setxIndex(int value) if you want them to be used as properties according to section 8.8: Capitalization of inferred names of the JavaBeans API specification (e.g. access them via ${object.xIndex} in a JSP.
Suppose you have boolean active; Accessors method would be public boolean isActive(){return this.active;} public void setActive(boolean active){this.active = active;} See Also Java Programming/Java Beans Code Conventions for the Java Programming Language