Questions tagged as 'java'

Tagged questions
1
answer

save excel in MySQL and delete an existing one

I am saving an excel file in MySQL using a jsp in java. How do I make sure that when I save another excel file in the same database, I delete the existing file and replace it with the new one? I enclose the class code where I read the excel a...
asked by 21.12.2016 / 13:03
1
answer

Extract graphics from a web page and display it in a web view

I'm trying to extract some graphics from a web page to show them in a webview of my Android application. I am basing myself on the example of this post How to display a part of the webpage on the webview android but I still do not succeed...
asked by 20.12.2016 / 18:30
1
answer

Automatic reconnection of bluetooth android studio

Good morning. I am developing an app in android studio, in which I connect via bluetooth to the printer. The detail is that if I leave the app the bluetooth connection to the printer is lost, and what I want is when I start the app I wi...
asked by 21.12.2016 / 16:03
1
answer

"Can not find symbol" when calling a class from a JSP file

I make this call to the "CookieHandler" class from the start of the JSP: <% CookieHandler handler = new CookieHandler(); if(handler.checkLogged(request, response)){ %> It happens that I do not stop having this error, I do not...
asked by 08.09.2016 / 10:31
1
answer

Unzip a folder from java

I need to unzip a folder from java however the class does not work for me package controlador; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.FileInputStream; import java.io.FileOutputStream; impo...
asked by 09.09.2016 / 21:27
1
answer

Disable native Android virtual keyboard in my [duplicate] app

I have an app that only contains a webview (and NOT an EditText). In the web that I use for the webview, I have my own keyboard designed by me, so I do not want the native keyboard of the cell / tablet to appear when I click a textarea or inpu...
asked by 16.07.2016 / 04:58
1
answer

Add a New Fragment and link it to the Drawer menu (Android)

I am trying to edit an android application, at the moment it works very well, but I have seen the need to expand its functions. What I want is to add a new fragment to the application. The application already has its Drewer defined as follows...
asked by 15.07.2016 / 18:08
1
answer

create tunnel connection via ssh (JAVA) to type commands in PUTTY console

Good morning, cordial greeting. I have a problem that I have not been able to solve, it turns out that I need to automate a process which consists of a desktop test, the process is: Enter the PUTTY with its respective host name and port, t...
asked by 24.05.2017 / 14:19
3
answers

JPQL query problem

What I need to do is list the suppliers that have responded to a single request. I make the query but I get the error (Object comparisons can only be used with OneToOneMappings. Other mapping comparisons must be done through query keys or direct...
asked by 10.06.2016 / 04:27
1
answer

managing Modem connections using Java

I need to know if there is any class (s) that can get properties from the connections of the devices connected to the modem network.     
asked by 13.06.2016 / 01:01