Questions tagged as 'java'

Tagged questions
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Validate Data Obtained by the user with do while

Good afternoon! After looking and asking for opinions I have obtained the two ways you can. It only works, if the user inserts a number . Highlight, if you insert letter / character IT DOES NOT WORK . short n; do { System.o...
asked by 12.12.2017 / 19:40
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how to use arraylist to set values from another class

I have a program that I have been modifying step by step to get data in an arraylist from another class. Something similar to how it is done with the get and set methods for attributes. However I fail to post the information in this arraylist. C...
asked by 28.11.2017 / 15:42
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how to set up a java web service on ubuntu server

Good morning the reason for my question is how to upload a web service that performs in java to a server ubuntu server 16.04 when looking for information found as it is done in php, I do not have much knowledge about I already have the apache...
asked by 28.11.2017 / 17:27
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JAVA web application, make it totally portable

Hello, how are you? I have a JAVA application that acts as an HTTP server, and what I would like to do is, add all the FRONT-END files of the application in the same jar, and when I transport the jar file, they can be written in the same locatio...
asked by 21.11.2017 / 16:44
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Open archive file through a java route

I use the following code to call the route: String url= "\"C:\users\Jose\Documents\video\""; ProcessBuilder p = ProcessBuilder(); p.command("cmd.exe","\c",url); NOTE: this code works perfectly for me, the file address is either video or a...
asked by 22.11.2017 / 00:21
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Basic Scraping in Java with Jsoup

I have a simple form this way <!DOCTYPE html> <html> <head> <title>INICIO</title> </head> <body> <div align="center"> <legend>INGRESO</legend> <form action="evaluar.php" m...
asked by 18.11.2017 / 22:51
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Problems in angular4 / java: lose server sessions

I have two http requests, in one the REST service saves the request import { Injectable } from '@angular/core'; import { HttpHeaders,HttpResponse } from '@angular/common/http' import { Observable } from 'rxjs'; import 'rxjs/Rx'; import { Route...
asked by 19.11.2017 / 17:39
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Pass the "Login" in java and database

I'm trying to make a login in java and mysql but at the time of trying to pass the login it fails me and I do not know why ... it throws me the message of "Errrror". I have a JFrame with the login button that would be this: private void jButto...
asked by 19.11.2017 / 16:29
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Problems with serialization

I am carrying out a project of a parking lot that registers clients, the vehicle of each of them, the number of hours that will last, I calculate the price depending on the vehicle, etc ... Until there is everything right, I have to go increasin...
asked by 19.11.2017 / 04:01
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Error in sorting by selection in java

I'm doing an exercise with sort ordering algorithm ascending, however when I execute it orders only the index 0 of the vector and I repeat this same value for the index 1 of the vector, and the other value is lost, the I have actually looked at...
asked by 22.11.2017 / 16:45