Questions tagged as 'java'

Tagged questions
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answers

Why is my socket paralyzed after loading a file?

Hi, I'm trying to make a socket that transfers files from the client to the server, it also makes queries to databases. I'm using threads but trying to load a file from the client to the server stays static and does not mark errors but do...
asked by 16.03.2018 / 15:29
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error: can not find a symbol Java

I have a problem. I want to recover panel2 of this program to open it in another one by: public JPanel getPanel2() { return panel2; } To display that panel2 in the other program I have this: if(e.getSource()== miCalcu)...
asked by 16.03.2018 / 02:08
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How can I pass a string from String to decimal?

I need to pass a String string that is in an object of type JTextField to a BigDecimal variable or any other data type that can store values of this type "785,292.90" and then store them in the DB (decimal (65, 0) )     
asked by 15.03.2018 / 23:27
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Get all selected files with createChooser on Android

With the intent Intent.createChooser I show the native selector to choose file. Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.setType("image/*"); startActivityForResult(Intent.createChooser(intent, "seleccionar fotos"),...
asked by 21.03.2018 / 10:52
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Error decrypting (RSA) Java

I have a program that encrypts and decrypts, but decrypting gives me the error BadPaddingException: Decryption error. There are two methods that encrypt and decrypt the end of the code, the error it gives me when decrypting, in the line String m...
asked by 02.03.2018 / 20:09
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TypedQuery in JPA very slow

I am starting to create a project with JSF and JPA, for the moment I have made a simple login (with pending improvements) but I have found that the query it takes takes about 3 seconds, something quite high considering that the base of data for...
asked by 02.03.2018 / 22:49
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Display sql statistics with javamelody and mssql

I'm trying to set up javamelody to show statistics the queries I cast against mssql. The project environment is made up of the following technologies: Java jdk 1.8 Tomcat 9.0.0.M15 Javamelody 1.70.0 Hibernate 5.2.12.Final Driver com....
asked by 02.03.2018 / 09:21
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How to make a linked list in Ruby

I have class Nodo and class Lista to call them from Main ; in Java I've done it but I do not know how to Ruby . In Java I would have what it is: class Nodo{ String nombre, id, tel; Nodo enlace = null ; } wit...
asked by 02.03.2018 / 04:21
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I want to send a data from my Activity NavigationView to a fragment that derives from this

The data is being received from my MainActivity which is a Login, which sends the data (through Intent) to the Start activity (until here the data is sent without problems) and from the Start activity I am trying to send it to my Fragment that d...
asked by 01.03.2018 / 20:45
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matrix series limit 4

My matrix currently prints:    1234       1234       1234       1234 I need to print only as follows:    1       12       123       1234 My code is this: Scanner pedir = new Scanner(System.in); int columnas; int fi...
asked by 05.03.2018 / 13:42