How can you use Builder Pattern for entities with JPA

I read that it's useful to use builder pattern when you have a class with a lot of parameters. I wonder how you can implement an entity using builder pattern. It would be great if you can provide sample code.


Here is how you can use a builder pattern: link1, link2. Of cause your entities still have to have a default public constructor to be handled properly by ORM. So the builder is only useful when you are going to create your entities by hands somewhere in the code.

Need Your Help

Hanning window and online FFT

matlab signal-processing fft

I am learning DSP and I couldn't write a code to calculate and plot these figures (just magnitude of Hanning and triangular windows in frequency domain.) Could anyone please help me with the code?

Accessing colorbox Iframe content with jquery

jquery iframe jquery-selectors colorbox

I tried accessing the content of an iframe, generated by the jquery colorbox plugin, for hours without success.

About UNIX Resources Network

Original, collect and organize Developers related documents, information and materials, contains jQuery, Html, CSS, MySQL, .NET, ASP.NET, SQL, objective-c, iPhone, Ruby on Rails, C, SQL Server, Ruby, Arrays, Regex, ASP.NET MVC, WPF, XML, Ajax, DataBase, and so on.