come with me, on the way I'll explain.
Criando Imagens Dinâmicas em Java na Web
Durante a apresentação do Tarso Bessa em Sobral alguém na platéia perguntou sobre um equivalente a biblioteca GD no PHP. O GD é uma biblioteca para manipulação de imagens comumente usado para criação de imagens dinâmicas (como gráficos) ou miniaturização de imagens. A libGD está disponível para várias linguagens além do PHP.
A respostá para a pergunta é bem simples, você pode usar todo o suporte para imagens disponível no Java SE (inclusive toda a API de Java2D).
Alguns links que podem ajudar:
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Getting an Android app source
18 March, 2010 - 12:00 am
Tags: Android, branch, cmd, git, programming
Posted in english | No comments
Getting the Android’s AlarmClock application source from official repositories:
git clone git://android.git.kernel.org/platform/packages/apps/AlarmClock.git
To get the head version for an old platform like the 1.4 (codename donut), choose the correspondent branch using -o or –origin:
git clone git://android.git.kernel.org/platform/packages/apps/AlarmClock.git –origin donut
Getting enviroment information on Android
16 March, 2010 - 10:18 am
Tags: Android, Eclipse, Java, programming, who am i, whoami
Posted in english | 3 comments
This is a simple program I wrote called Who Am I that shows informations about the device which it is running. Which can be useful for developers and maybe advanced users.
Download:
WhoAmI.tar.bz2 – Eclipse project. It’s configured for Android platform 4 (1.6) but should work without problems in newer Android platform versions.
WhoAmI.apk – Application installation Android [...]
The Caps Lock Java Socket Server
27 February, 2010 - 9:39 pm
Tags: caps lock, Java, programming, socket, upcase
Posted in english | No 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 client at time.
No multi [...]
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. The code [...]
1º Café com Tapioca de 2010
9 February, 2010 - 3:49 am
Tags: Atlântico, Caelum, café com tapioca, CCT, CEJUG, José Donizetti
Posted in english | No comments
Essa quarta-feira acontece o primeiro CEJUG Café com Tapioca de 2010.
O foco serão duas palestras ministradas pelo José Donizetti da Caelum, sendo a primeira sobre VRaptor 3 e a segunda sobre Test Driven Development.
O evento será realizado no auditório do Atlântico.
Maiores informações no site do evento.
Miojo Script
28 January, 2010 - 2:37 am
Tags: libnotify, Linux, miojo, notify, notify-send, programming, Shell Script, ubuntu
Posted in english | 1 comment
O pre-requisito é o notify-send, um utilitário de linha de comando do libnotify. No Ubuntu:
sudo aptitude install libnotify-bin
E aqui o script em si:
sleep 5m; notify-send “aviso” “tirar o miojo do fogo”
Pronto, depois de cinco minutos isso vai aparecer:
Easily Sortable Date and Time Representation
20 January, 2010 - 10:55 pm
Tags: date, datetime, ISO 8601, Jochen Voss, Markus Kuhn, programming, Python, representation, sort, sorting, time
Posted in english | No comments
I was looking for a date and time representation useful for registering stock quotes in a simple plain file.
I found that the standard ISO 8601 is just the answer for this, it’s called “Data elements and interchange formats — Information interchange — Representation of dates and times”. Here is a example:
2010-01-20 22:14:38
There’s this good article from [...]
Java Font List
5 January, 2010 - 6:10 pm
Tags: AWT, fonts, Java, JVM, Larabie, Larabie Fonts, programming
Posted in english | Comments Off
Here’s a program that lists fonts available in your JVM. You can also set the environment variable JAVA_FONTS to specify the font directory.
import java.awt.GraphicsEnvironment;
public class ListFonts {
public static void main(String args[]){
GraphicsEnvironment e = GraphicsEnvironment.getLocalGraphicsEnvironment();
for(String font:e.getAvailableFontFamilyNames()){
System.out.println(font);
}
}
}
By using pipes you can count how many fonts you have:
java ListFonts|wc -l
On my Ubuntu machine here I got 556 because [...]
Python Fast XML Parsing
25 December, 2009 - 3:04 pm
Tags: dtd, expat, game, programming, pygame, Python, sax, schema, urllib, XML
Posted in english | 1 comment
Here is a useful tip on Python XML decoding.
I was extending xml.sax.ContentHandler class in a example to decode maps for a Pygame application when my connection went down and I noticed that the program stop working raising a exception regarded a call to urlib (a module for retrieve resources by url). I noticed that the [...]
Tiled TMX Map Loader for Pygame
I’m using the Tiled Map Editor for a while, I even wrote that tutorial about it. It’s a general purpose tile map editor, written in Java but now migrating to C++ with Qt, that can be easily used with my set of free pixelart tiles.
A map done with Tiled is stored in a file with [...]
8 September, 2009 - 8:48 pm
olha aki nao tem imagem nemuma v6 não sabem por imagens dinamicas ?
presisam de ajuda ?