Questions tagged as 'java'

Tagged questions
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Code with indeterminate entries showing the pairs in ascending order and odd in descending order

I'm doing an exercise where the user places an undetermined number of numbers and they have to be presented by dividing the odd-numbered pairs, the pairs being incremented and the odd pairs decreasing. My question is how to take advantage of t...
asked by 22.09.2017 / 20:16
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How to open an activity from a calculation?

I'm a layman in android studio and need to do a program on a BMI calculation. The idea is simple, in the first activity he asks for his weight and his height, after that he must make the account of the imc (imc = weight / height²) and if the res...
asked by 23.09.2017 / 20:38
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HTML Entities in PHP and Java

I'm using htmlentities () in PHP to store data in the database, replacing ç , ã , and other characters by HTML entities: <?PHP htmlentities ("Ampliação"); //Resulta na string "Amplia&ccedil;&atilde;o In Java (Android) I need...
asked by 26.09.2017 / 02:31
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How to list the last message of all conversations

I'm creating a chat in android studio, so I need to list the last message between the chat user and his contacts, regardless of whether he sent or received the last message. I made the select below in mysql and it works, but in sqli...
asked by 26.09.2017 / 01:59
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Error to popular jtable with database

I have to make a client registration application in JAVA, I'm using eclipse. The problem is in the listarCli() method, because when I comment on this method the error does not appear. The error is: "java.lang.NullPointerException" Acco...
asked by 15.09.2017 / 18:31
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REGEX JAVA Find an excerpt throughout the document

I'm trying to develop a Regex expression in the JAVA language to find and validate the existence of a small sequence of characters within a .txt. Exp: Validate the existence of the TDT+20+LA8031+++LA' string within the text below:...
asked by 15.09.2017 / 21:00
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Servlet JSP does not work

I have the following error in eclipse when running a servlet:    HTTP Status 404 - / TestJSP / web.xml <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java...
asked by 28.11.2017 / 17:36
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Save in the gallery image taken by the camera and pick up the path of that image. - Android [duplicate]

I have an android app that uses the camera to take photos and show in ImageView , except that the picture taken is not saved in the gallery. I would like to know how to save the image in the gallery and get the path of this saved image a...
asked by 15.10.2017 / 11:28
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Insertion error in Oracle database with Java

When I make a set of inserts in the bank, it says that only the course information has been entered, but the class Console STATUS DE CURSO: true STATUS DE CURSO: false JOptionPane TurmaDAOpublicclassTurmaDAOextendsDAO{publicT...
asked by 15.10.2017 / 20:23
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How to search from SearchView in the actionbar data from RecycleView using Kotlin?

Follow the code below: class MainActivity : AppCompatActivity(), SearchView.OnQueryTextListener { var list = ArrayList<Shop>() var adapter = ShopAdapter(this, list) var imageModelArrayList: ArrayList<Shop>? = null...
asked by 15.10.2017 / 14:06