Questions tagged as 'java'

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Java and XML: Problem loading images

When parsing an XML with netbeans, using java and a .jsp, I try to make a table where it shows the XML images. The parsing goes well, but when I launch it into a browser (I've used all browsers) it does not load the images (jpg). - PART OF TH...
asked by 30.11.2018 / 09:15
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How to use split ()?

I have a .txt file that is read from which I need to take apart in several words PRU.U, PRU.D, EJEM.T, EJEM.C For example that pru is equal to prueba and that u is uno And so on each one with their respective w...
asked by 30.11.2018 / 05:10
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Doubts with Servlets and JSP

I am developing a web page where on the home page (in my case it is my "Home" servlet) I wish to present information from several tables as well as queries to them. What I have achieved is to obtain the information of my company / brands table a...
asked by 26.11.2018 / 20:00
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Synchronize contacts with remote database

I try to synchronize the contacts of the mobile device with a database in this case Postgresql, the way I do it does not seem to be the most convenient. public void sincronizarcontactos(){ // Se tiene permiso final String[] projec...
asked by 26.11.2018 / 15:29
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Send a parameter from JAVA type href through Iframe?

I want to do the following but I do not know how to do it. I have a development system, where on one page I place an iframe and within that iframe I call another test system to communicate. When I call a specific menu of the developm...
asked by 26.11.2018 / 18:19
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How to get an object through an ArrayList in Firebase

I'm doing an app, and I've gotten it with the Real Time Database . An object contains a field that is of type Arraylist . I have to make a query for orderByChild . This query consists of passing the elements of another list, an...
asked by 26.11.2018 / 19:54
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COUNT ROWS OF A JTABLE JAVA

I have a JTABLE and I am adding data to him, how can I do so that he can fence me with the data and if I get to remove something from the table that comes back and count the rows of the table, but in a column he will fence me showing the amounts...
asked by 26.11.2018 / 16:27
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When I give the 3 buttons, I return something Jframe Java-Swing

Very good I am making a game for when I select the 3 vegetables I return you know what you are talking about, then the problem I have is how I do so that when I give the Button of Vegetable 1, Vegetable 2 and Vegetable 3 it returns me in Result...
asked by 26.11.2018 / 16:43
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Problem closing, saving, editing, and saving jTable again (nullpointerexception)

stackoverflow community. I'm doing a java application that adds, updates, or deletes the cells of a jTable and then saves the values in a text file. When I open the application for the first time and make the respective modifications to the tabl...
asked by 28.11.2018 / 03:22
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Reduce Cursor in Android Studio

I have a question about cursors, in my application I created a cursor that collects data from an internal database of the app, in this case it collects the thermal printers connected by network, I have 2 printing zones and each of them I have as...
asked by 28.11.2018 / 08:41