Questions tagged as 'java'

Tagged questions
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Can exceptions be created to a selective control structure (If-Else)?

My problem is in a prime number algorithm. The logic that I used in Java was the following: public static void main(String[] args) { Scanner entrada = new Scanner (System.in); System.out.print("Su rango de numeros primos es del 1 ha...
asked by 14.06.2017 / 23:54
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how to check the internet connection?

I have the following code: ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = connMgr.getActiveNetworkInfo(); String estado=networkInfo...
asked by 01.01.2017 / 13:32
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Error when using the multiple attribute in a s: file of struts2.0

The next line of code does not compile me when I see it in the browser, it marks an Error 500 when trying to access the page with this line. As I use struts2.0 in my application, and what I found on the internet with struts2 it is possible to us...
asked by 10.07.2017 / 21:33
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error update label with selectOneMenu java jsf + primfaces

Good I am trying to print in label the name when selecting an item in a selectOneMenu but I do not capture it the menu works well shows me all the cedulas available in my tables so my selectOneMenu is defined %: <p:selectOneM...
asked by 30.06.2017 / 15:24
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how to store any date in a java variable and save it in mysql

when sending it to the database I get the following error Data truncation: Incorrect date value: 'null' for column 'dateInscription' at row 1 the capture in visit1 String visit1 = request.getParameter ("txtVisita1"); and I send it to the databas...
asked by 18.06.2017 / 20:54
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Insert data in textfield through a database

Someone could tell me how I show data (from my database) in various textfield Here the search code:) public void buscar(String id_usu) { try { Object row[] = new Object[15]; conectar conexion = new conectar(); Conne...
asked by 10.06.2017 / 20:31
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How to initialize a constant variable

I want to initialize a constant variable, which is'final', but I also want to include it in the constructor of a class but I do not know if that's fine: public class Avion { private final BigDecimal limiteAltura; public Avion(String li...
asked by 10.06.2017 / 11:43
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Display HSQLDB database created by Spring MVC

How you can view the database created in memory by Spring MVC when using the code: @Bean public DataSource dataSource() { return new EmbeddedDatabaseBuilder() .setType(EmbeddedDatabaseType.HSQL) .generateUniqueName(...
asked by 10.06.2017 / 15:50
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check out if the user exists or not in the database

I'm trying to do this validation on my server but it does not work out when I pass a string value to the method that would be a user name, it must go through the methods and see if it exists in the database that does not let you out and if it do...
asked by 07.06.2017 / 07:28
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Interface management with hibernate

Hello my problem is that I do not know how to implement the mapping in XML with an interface between half a step to explain iProducto is my interface and uses it to filter and have a single selection option that can be a plate or produc...
asked by 13.06.2017 / 22:30