Questions tagged as 'java'

Tagged questions
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Hide database records instead of deleting them [closed]

Recently I had the need to do a car crud, using Rest, Java EE, Angular v.6 and the database in SQL server, but with the difference that instead of deleting the records, they only they are hidden from the user and kept in the database. I want to...
asked by 14.11.2018 / 19:16
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Summation variables in java

I have a double variable declared inside a for loop, this variable returns different values according to the loop through the list array. for(int i = 0; i < ticketAdapter.mTicket.mLines.size(); i++){ double totalNoVATt = tic...
asked by 05.12.2018 / 09:54
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Remove all blank spaces at the beginning and end of a regular expression word

I need your help because I have a regular expression for all the blanks at the beginning and end of a word, but I have tried in several ways and I can not get the expected result, can you please guide me. Word 1:     4. numero de identi...
asked by 27.12.2018 / 22:46
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JAX WS error http 302 (found) DIAN Colombia

I am using the JAX-WS RI tool to access the DIAN web testing service, which is the following link The xml generated by the code is the following, although I had to add the header separately since the tool does not provide this generation...
asked by 06.11.2018 / 17:04
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Error with Java inheritance POO Exception in thread "main" java.lang.RuntimeException: Uncompilable source code

What happens is that we are learning the subject of inheritance and they sent us a simple exercise, which tries to add a person and then list the people added, the part of adding a person is good for me, the problem is to list the people added,...
asked by 05.11.2018 / 23:12
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I would like to know how I capture the option of a radiobutton to show it in the JTable of this window?

// This is the window where I will show a price according to the user's options in the main window public class VentanaResultados extends JFrame { public VentanaResultados() { Container cp = getContentPane(); cp.setLayout...
asked by 10.11.2018 / 20:41
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I have a problem with closing connections to MSYQL using JAVA.

After executing a prepareStatement my connection to the database is closed and it does not let me continue executing sentences. I throw the exception: java.sql.SQLNonTransientConnectionException: No operations allowed after connecti...
asked by 07.11.2018 / 16:56
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Problem with Java and MYSQL login

Today I come with you because I had a problem with a login I'm doing in Java with a connection to BD MYSQL. My class connection: public class Conexion { Connection conectar = null; public Connection conexion(){ try {...
asked by 19.10.2018 / 04:31
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Change screen (Toolboard button)

I have the following part of my code: @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.barra_superior, menu); // toolboard return sup...
asked by 17.10.2018 / 10:39
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How can I get the data of the following json in java?

You see, I have the following json: "signaturesType":[ "SIMPLE" ], "docs":[ "contrato" ] How can I get the values inside the tags signaturesType and docs. What is strange about me is that i...
asked by 17.10.2018 / 15:37