Question : I need to create a table in HTML that populates rows and columns with data coming from a […]
Tag: java
Formatting values in the house of millions
Question : I want to format values in the millions. Example: The result of a calculation would be 1.960,35 . […]
Background in JDesktopPane without losing quality and expandable
Question : I have code to add a background image to a JDesktopPane and it works perfectly on 16:10 widescreen […]
Doubt on Inheritance
Question : I have the following case: Avo.java: public class Avo { public String quemEuSou(){ return this.getClass().getName(); } } Mae.java: […]
Conversion Error – Null Converter
Question : I have an application where you have a customer registration with plan selection, such plan comes from the […]
HTTP Cache Headers in Servlets
Question : I would like to know if there are libraries or solutions to handle requests containing headers such as […]
Program goes into infinite loop
Question : My goal with the code was to set up a game that asked the person which number the […]
How to check if a given field / value exists in the JSON document?
Question : { “timestamp”:”2018-10-08T16:58:38.949Z”, “dataFrame”:”QQ==”, “fcnt”:15, “freq”:902500000, “port”:12, “rssi”:-69, “snr”:10, “sf_used”:10, “session_id”:”f41e10e8-1c73-499c-8ad7-4cbcd54c8ebd”, “gtw_info”:[{ “gtw_id”:”000000000b0319a3″, “rssi”:-69, “snr”:10}, { “gtw_id”:”000000000b031938″, “rssi”:-100, “snr”:10.2, […]
How do I initialize Maps in a specific place?
Question : How do I make the app, when I open Google Maps, zoom in to a specific location (for […]
Unwanted Result – SQL Query
Question : Hello. I’m a problem and I can not see a way to solve it. My data from the […]