Questions tagged as 'java'

Tagged questions
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What are the advantages and disadvantages of using Heroku for your application? [closed]

Mostly in business environment     
asked by 06.09.2015 / 21:29
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java service that queries SQLite once a day

I'm new to Android programming, I'd like to know which java service I use to query the SQLite database once a day, I want it even if you turn off the device or reboot, the service is activated again     
asked by 27.05.2018 / 06:28
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PMD and checkstyle on windows 10 [closed]

How and what link to install PMD and Checkstyle on windows 10. I just see linux tutor.     
asked by 27.10.2017 / 20:16
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How do I power code on android? [closed]

I'll make a calculator that needs boosting, can someone tell me how it's done on android?     
asked by 29.03.2017 / 06:14
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Return a SQL result [duplicate]

I have a query in sql that is returning me the wrong way. It is returning like this: [Cidade.Cidade@1d8b06a, Cidade.Cidade@251a5c, Cidade.Cidade@15ec3c1 and I would like it to return like this Acrelândia Assis Brasil Follow the me...
asked by 21.05.2017 / 04:25
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Arithmetic operations in Java with data from the database [closed]

What is the best way to calculate values in java? I need to make a method that returns the sum of all input and output and subtraction. Example: Insert all entries in Double in column X, and all double output in column Y (get the total of each c...
asked by 25.05.2017 / 22:09
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Error SQLiteDatabase db = this.getWritableDatabase (); [closed]

public ArrayList<String> addMigracaoCadIndividual(String QUERY){ SQLiteDatabase db = this.getWritableDatabase(); return null; }    java.lang.NullPointerException           at android.content.ContextWrapper.openOrCreateDatabase (C...
asked by 09.04.2018 / 20:48
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How do I get the content of a text that is in the link (URL) and load it in TextView? [closed]

I need a way to load through a URL a text that is in it. The text is large, and this way the application would be lighter. I want to set the text that is downloaded from this link in TextView .     
asked by 12.02.2017 / 16:35
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Error when setting template in JTable

So I was developing a frame that received a table from the database, I used the same scope of the function several times and it worked perfectly, I just modified what was necessary to generate the table the way I wanted it in that case and starte...
asked by 06.12.2016 / 20:34
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How to use the clipboard to copy and paste [closed]

Using the android clipboard, to copy a text from a textView, I need to copy that text and use it to paste it somewhere else.     
asked by 07.12.2016 / 12:34