Posts by luanlucas • 86 points

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  A: Equals and Hashcode

  In theory you would not need to overwrite these methods for contains to work. By default, the contains() will call the equals() of the object passed by parameter which in turn will use the…

  java logic

  answered 7 years, 1 month ago luanlucas 86

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  A: JPA - Java does not insert data into the database

  Try replacing the @Injectof your EntityManager for @PersistenceContext. Depending on how you set up your persist.xml (or another name for the JPA implementation configuration file) it is necessary…

  java hibernate jpa

  answered 7 years, 6 months ago luanlucas 86

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  A: add to JAVA text file

  Hello. The object FileWriter has a constructor of two arguments being FileWriter(File file, boolean append) where: Constructs a Filewriter Object Given a File Object. If the Second argument is true,…

  java

  answered 7 years, 6 months ago luanlucas 86

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  A: Prime faces,play data from a datatable for a dialog

  Opa. Here’s a good example: https://www.primefaces.org/showcase/ui/data/datatable/selection.xhtml, Just take a look at the code you will understand, it’s very simple. Briefly, I noticed that you do…

  java ajax jsf primefaces web-application

  answered 7 years, 6 months ago luanlucas 86

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  A: Problems comparing objects coming from a list

  I don’t know what your getNome_servico() returns but I guess it’s not a collection. Anyway, your method verificaServico() is returning a List, this way you should iterate (go through) this list and…

  java

  answered 7 years, 6 months ago luanlucas 86