Author: Luca Zanini

  • Project Euler – Problem 3

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    Luca Zanini
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    From the Project Euler Problem 3: The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number 600851475143 ? checked I used the Sieve of Eratosthenes and an idea to know if a prime factor was the greatest without checking all the numbers until 600851475143.

  • @Autowired and @Resource in Spring

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    Luca Zanini
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    The @Autowired annotation is used to configure the dependency injection in Spring and is associated with a setter method, or a field or a constructor of a class. In the case of a setter method or a field the bean used for dependency injection is chosen depending on the type.

  • Passing information about UI objects to a java agent

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    Luca Zanini
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    The lotus java agents don’t have classes to manage the UI objects, such as in LotusScript with the classes NotesUIDocument or NotesUIView. It’s true that you can find several info about the Notes Client Java UI API in internet, but these classes are not officially supported. In this post I explain 3 ways to obtain…

  • Project Euler

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    Luca Zanini
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    I decided to start with Project Euler. Until now I have solved the first two problems, very easy: Prolem 1 Add all the natural numbers below one thousand that are multiples of 3 or 5. Problem 2 By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum…

  • The Dojo attributes toolbarType and toolbar of a Rich Rext control in the XPages

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    Luca Zanini
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    The Rich Text control of a xpage is derived from CKEditor from lotus 8.5.2, however in previous versions it was a Dojo rich text editor. A CKEditor control just created in a xpage doesn’t have Dojo attribute explicitly defined as shown in the figure below:

  • PropertyEditors in Spring 3

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    Luca Zanini
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    PropertyEditor is an interface that provides a support for the conversion of the value of a property (usually of type String) in an object that can be Date, URL, etc.

  • Overriding the equals() and hashCode() methods

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    Luca Zanini
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    The equals() method is inherited from the superclass Object and determines if two instances are equal or equivalent. Usually this method should be overridden because the equals() method of the Object class is equivalent to the operator ==, which returns true if and only if the two references refer to the same object.

  • The merge tag

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    Luca Zanini
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    The merge tag allows you to avoid an unnecessary use of nested layouts when you use the include tag.

  • Displaying errors in xpages

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    Luca Zanini
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    During the development of a lotus application with XPages is very useful to show the runtime errors on the XPages, to enable this feature check the “Display XPage runtime error page” under the tab XPages in Application Properties as shown below: