the world is a pixel
JavaFX Overview Slides
My slides about a overview on JavaFX at our last CEJUG event.
Downloads:
Here a little screncast showing the live preview feature on the NetBeans JavaFX Plugin.
You can also download the orignal screencast in higher resolution netbeans_javafx_preview.ogg (15 Mb). Photos of the presentation at my Flickr album.
Tags: café com tapioca, CEJUG, Faculdade Christus, Java, JavaFX, jug, netbeans, RIA, screencast, vídeo
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Android screen height and width
12 March, 2011 - 9:30 pm
Tags: Android, Java, mobile, programming, screensize
Posted in english | 1 comment
Context ctx = getContext(); Display display = ((WindowManager)ctx.getSystemService(ctx.WINDOW_SERVICE)).getDefaultDisplay(); int width = display.getWidth(); int height = display.getHeight(); Yes, there are easier ways to retrieve the screen width on Android but there are cases that this long code is the only solution. You may already have the Context. WindowManager or the Display and so it would be [...]
jam over jobim
10 December, 2010 - 5:42 pm
Tags: black and white, carlos kaplan, room, samba de uma nota só, Silveira Neto, tom jobim, vídeo, youtube
Posted in english | No comments
My friend Carlos Kaplan on keyboards and me on accustic guitar, jam session over “Samba de Uma Nota Só” by Tom Jobim. At my room in Maryland.
palestra android
4 May, 2010 - 2:24 pm
Tags: Android, CEJUG, Faculdade Evolução, notícia, palestra
Posted in português | 1 comment
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Java: invoking a method by name
29 April, 2010 - 10:29 am
Tags: Class, Java, method, programming, Reflection
Posted in english | 2 comments
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Life = Risk
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Tags: inspirational, Life, risk, vídeo
Posted in english | No comments
A simple and beautiful video about the early failures, things and people that tries to put you down and we have to face before achieve what we really want. “If you never failed, you never lived”
calling commands in Java
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Tags: getruntime, Java, programming, runtime
Posted in english | No comments
I don’t like the approach of calling native shell commands in any language instead of using multi platform libraries, but here is a little prof of concept Java program to call native commands. import java.io.*; import java.util.*; public class Exec { public static void main(String args[]) throws IOException { Process proc = Runtime.getRuntime().e xec(args); BufferedReader [...]
Iterating over a HashMap
8 April, 2010 - 11:22 am
Tags: collections, enhanced loop, foreach, hashmap, iterating, Java, programming
Posted in english | No comments
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16 March, 2010 - 10:18 am
Tags: Android, Eclipse, Java, programming, who am i, whoami
Posted in english | 8 comments
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The Caps Lock Java Socket Server
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Tags: caps lock, Java, programming, socket, upcase
Posted in english | 3 comments
Here is a simple server for those who are starting studying sockets or just needs a simple socket server example for reuse while writing your own behavior. Features: A client should enter a string and the server would answer the same string, with each symbol in up case, when possible. Default port at 8080. One [...]
Beware the locale
22 February, 2010 - 5:16 pm
Tags: development, i18n, Java, JUnit, locale, programming, String, teste unitário, toString, unit testing
Posted in english | No comments
Today I was programming a toString method for a class widely used in a application, using the very useful String.format that provides a C’s like printf formatter. @Override public String toString() { return String.format("VO[a: %.1f, b: %.1f, c: %.1f]", a, b, a+b); } %.1f means a float with one digit precision after the dot separator. [...]
