Questions tagged as 'java'

Tagged questions
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Problem when registering a product

The problem I have is that when I register, in this case a product, it registers normal but the problem is that it registers it 2 times, it registers everything well in the Database but what happens is that it sends it 2 times and Obviously an e...
asked by 13.05.2016 / 05:16
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Modify data from a java CSV file

I'm trying to modify the data of a CSV file from Java. In my file CSV I have saved the following data: "Nombre","Apellido","Intereses","Descripcion" jose,guerra,algo,algo pedro,perez,algo,algo manuel,aguirre,algo,algo Class Per...
asked by 23.05.2016 / 19:34
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Error using vectors in Java

I have the following line of code calificacion [0] = 3.5,4.2,4.6,5.0,4.5,4.0; I would like to know why I get an error when executing it, I know that it is because of the way it separates the numbers that I put in the vector and they are i...
asked by 19.05.2016 / 20:29
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Read all the txt files in a folder and then work with them

What I'm working on now is a thread that has to constantly look into a "My Documents" folder and see if it finds files .txt . If you find them, read them, validate the data and send them to the database. The issue is that I had alread...
asked by 14.12.2018 / 07:03
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Find equal Strings of an ArrayList?

I have a three-color Array, Red, Blue and Green, with a while I add 10 random colors to an ArrayList. I need to find all the colors "Red", "Blue" and "Green" of the ArrayList, and then add all the "Red" colors found to an array where only "Red"...
asked by 02.11.2018 / 18:31
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Stop media player android, when receiving calls or another application uses the audio

I hope I have been specific, the detail is that I am doing an audio streaming with media player, and I would like to know if there is any way to know if another application is using the audio from the phone, and if so, I interrupt the service (...
asked by 25.08.2016 / 23:29
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Download files from my FTP Server

I have an FTP server from which I need to download some images. I have already searched several codes on the Internet where they tell me to download thousands of bookstores, show the code and none of them work for me. I'm doing this applic...
asked by 11.02.2016 / 18:58
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Is it possible to create a class constant when inheriting in Java?

I have a class that is abstract with a couple of abstract methods and I need all the classes that inherit from it to have a final field static String em> which contains the 'simple' name of the daughter class, called TAG. I've been trying...
asked by 17.08.2016 / 10:44
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Force language to test Android applications

Change the language of the device to test if the application works correctly in different languages, I found the following code in Java String languageToLoad = "en"; // your language Locale locale = new Locale(languageToLoad); Loc...
asked by 14.01.2016 / 19:40
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Click on recyclerview does not work and does not give an error

I am in full development of an application, I use fragments and one of them loaded a layout with a RecyclerView , at the beginning the click and long click were made, it does not give me any error, since the application works perfectly but...
asked by 08.01.2016 / 14:02