Questions tagged as 'java'

Tagged questions
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Strava API communication

Hello. I made a communication with the Strava API as per the documentation. What happens, I have developed the request for authentication with strava, I make the request and receive an HTML page to place the strava email and password, but after...
asked by 23.03.2018 / 21:04
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ManyToMany JPA - Product Category

Hello, I'm having trouble deleting a record that has @ManyToMany relationship. When I delete the record for the Product entity with the CascadeType.ALL annotation, it deletes all the records in the middle table (Categorization), not just...
asked by 22.03.2018 / 19:05
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How can I change the position of the LineChart JFreeChart legend?

I'm designing using JFreeChart to create line graphics, but I'm having a hard time customizing the caption's position. Currently my chart looks like this: ButIneedthecaptiontobeinthelowerleftcorner.HowcanIcustomize?//graficodamediadeumperiod...
asked by 23.03.2018 / 04:50
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List directory using Java getRuntime on MAC

In Java I am trying to open the mac terminal and execute a command to list folder 'ls'. Follow the code public String executeCommand() { String[] commandWithParameters = null; commandWithParameters = new String[]{...
asked by 27.03.2018 / 23:46
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Efficient method to compare lists

I have a problem where I need to compare strings and define their proximity. The problem is that I have a list with 21,000 records and I need to compare all of them with each other, which would give a quadratic complexity and in total would b...
asked by 20.03.2018 / 15:18
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Button does not appear in one activity and appears in another

I have a problem that I can not identify where it is. I have a layout that runs a video, with a button in front, but the button does not appear even though when I click on the button area it works normally. Thebuttonshouldappearintheredarea....
asked by 27.03.2018 / 04:16
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Srpring security with multihttp

Hello, I'm setting up spring security to manage authentication for two distinct areas of the application, with different forms. I created the configuration according to what is written in the manual, but only the first configuration is achieved....
asked by 18.03.2018 / 22:38
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Swing integrated with JavaFX is possible?

I wanted to know if it is possible to call a JavaFX screen through a Swing Screen Button. The code for the JavaFX screen I want to call is the following: public class EditorHTML extends Application { public static void main(String[] args)...
asked by 23.03.2018 / 20:56
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Firebase BD, show user online in APP

I am building a radio APP with firebase and wanted to know how I can do that every time a user is listening to the radio, is added to the ones that are already listening, that is, I want to get the amount of Online Listeners at the moment, using...
asked by 19.03.2018 / 19:39
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Localization failure in project creation - Android Studio

Good afternoon, guys. When I try to find this way through ... it does not let me have access to the folder, and when I put the direct location that I want, it gives that misery down there. I've never used android studio, I'm starting my st...
asked by 19.03.2018 / 20:23