Questions tagged as 'java'

Tagged questions
2
answers

Read file format CSV in Java

I would like to know how I have to proceed to read a file in CSV with Java and skip a comma of separation between each field. Read each space that is found but I want it to be each comma (,) how could I do it? This is my code: class Pruebas...
asked by 07.12.2016 / 23:14
2
answers

Error filling JTextField with JTable data [closed]

I have the problem that my program returns an error, that I do not know why it occurs, when collecting data from a row of a JTable selected and pass them to a series of JTextField , the error produced is this:    java.lang.ArrayI...
asked by 05.06.2017 / 10:37
1
answer

a = 0.7f but at 0.7

Why a floating type variable with a value of 0.7 ... when subjecting it to the following condition: (if a < 0.7) ... expecting that if it is less, the word "yes" will be printed and if it is not, print the word "no"? The image exceeds 2mb. Bu...
asked by 30.11.2017 / 00:49
2
answers

Result Set empty with Prepared Statement in java against Oracle

Good! I have the following code that is not returning any data to the ResultSet defined: Connection _con = null; PreparedStatement _ps = null; ResultSet _rs = null; UsuarioBean _Ret = null; _con = (new ConEvaluacionProveedores()).ge...
asked by 05.06.2017 / 16:31
1
answer

Error in onCreate android .AppCompatAutoCompleteTextView can not be cast to com.rengwuxian.materialedittext.MaterialEditTextat

I have the following error E/AndroidRuntime: FATAL EXCEPTION: main Process: shop.easy.app.x.com.x, PID: 10183 java.lang.RuntimeException: Unable to start activity ComponentInfo{shop.easy.app.x.com.x/shop.easy.app....
asked by 29.11.2017 / 17:33
2
answers

Error importing project to Android Studio

I need to import an Android Studio project already created to Android Studio, but I have the problem that I get the following error: In "Event log" I get the following error:    Gradle sync failed: Cause: failed to find target androi...
asked by 28.11.2017 / 19:25
1
answer

services on android

I'm working on an android application that runs a servicio in the background, I've been testing with different services and it happens that all of them run fine while the app runs normally, when I close the application the service will s...
asked by 04.04.2017 / 03:58
2
answers

Error building an Employee object from a .txt file Exception: java.util.NoSuchElementException: No line found

Good morning Community: I have the sgt txt file. With the following code I try to read the file and build as many Employee objects as lines have the mentioned file. Main method: The methods that do the whole operation:...
asked by 22.10.2016 / 17:52
1
answer

Is there a library for Voice recognition in Java? [closed]

I have already searched for my question to ask, and wanted to know if you know of any bookstore and how to use it? If you could give me a tutorial, pdf, etc. I would really appreciate it.     
asked by 16.10.2016 / 06:06
2
answers

Save and retrieve a list by rotating the device in Android Java

I have a List<Sendero> that is populated from a database, I want to avoid recharging data from the database when the device rotates I mean I want to save the list so I can get it back in onCreate using savedInstanceStat...
asked by 15.10.2016 / 20:18