Questions tagged as 'java'

Tagged questions
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How can I solve this type of error when testing?

When executing in the console it happens that a "next" error that is hosted in the "while" bounce    java.sql.SQLException: Unable to perform recovery on a   PLSQL statement: next at   oracle.jdbc.driver.OracleResultSetImpl.next (OracleResult...
asked by 29.08.2018 / 05:13
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Login with arrangement in Android Studio

Hi, I'm doing a login with arrangements in android studio but every time I want to move to a new activity, nothing happens public EditText user, contra; public String usuarios [] = {"lexar", "carito", "juan", "amanda"}; public String contras...
asked by 28.08.2018 / 15:08
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Why can not I concatenate a string to the SQL statement?

Good afternoon someone could help me with this little problem please ... I have 2 functions, 1a) SearchIdFactura () obtains the id of the last record of the "invoice" table and stores it in a global variable "string idFactura". The 2nd) ShowTabl...
asked by 22.10.2018 / 15:37
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Life time of an object [closed]

I need to do a program with java that creates an object every 30 seconds and puts it in a queue and then does some operations with them. I had thought about creating the object and that creating it would also create a kind of counter, so that wh...
asked by 23.10.2018 / 14:36
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Can not resolve symbol 'GeofencingClient'

I started working in the Android field and I worked in an app that uses geofencing, using the google documentation I found a class that I can not use " GeofencingClient " and I do not know which dependency requires, research on the Internet but...
asked by 23.10.2018 / 14:53
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Multiple tasks in the background on Android [closed]

I would like guidance on how to run several tasks (functions) in background , even when the app is closed from recent apps. For example: a task that verifies a URL every 10 minutes (it is an API of weather forecast) a task that verifie...
asked by 23.10.2018 / 14:47
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Driver returns list with data but in the view it is not displayed (Spring)

I am new to this from Spring, I have made an application everything works fine, except that although the list in the controller is full, it does not show the values in the jsp. @Controller public class DBUserController { @Autowired pr...
asked by 15.08.2018 / 19:52
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Pass a variable manipulated in Javascript to Java

Within my application, I have a button that opens a modal window and store the response of this, so that. function lanzarPeticionDependiente(aplicacion, operacion, parametros){ var sFeatures = 'dialogHeight: 1200px; dialogWidth: 10...
asked by 23.08.2018 / 10:58
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Convert Calendar to Date to store it in SQLite database

I need to convert a CALENDAR variable to DATE (to get date and time), so after that that DATE variable is saved in an SQLite table that has a DATETIME type. Clarified this we begin by showing the SQLite table called "file", which I plan conta...
asked by 24.08.2018 / 16:01
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Failed to return False or true Java

I have a logic error that is giving me headaches, I need to make a login system, the fields are burned, but I need to pass it to a method, when I execute it it does not return me true or false , and executing it as a method d...
asked by 14.08.2018 / 04:41