Paul Labis: This is a personal blog where everyone can read my experiences, ideas and thoughts about programming, latest gadgets and other information technology related topics, lifestyle and many other stuff I would like to share to the public.

Showing posts with label Java. Show all posts

by paul

0 Comments »

, ,

Commons Email - Examples

I found another good apache tool for sending emails.
Its easy to use and has good documentation.
Below is an example of an easy way to sending an email.
It is explained properly on apache user guide page which is embedded on the bottom part of this article.


import org.apache.commons.mail.*;
...

// Create the attachment
EmailAttachment attachment = new EmailAttachment();
attachment.setPath("mypictures/john.jpg");
attachment.setDisposition(EmailAttachment.ATTACHMENT);
attachment.setDescription("Picture of John");
attachment.setName("John");

// Create the email message
MultiPartEmail email = new MultiPartEmail();
email.setHostName("mail.myserver.com");
email.addTo("jdoe@somewhere.org", "John Doe");
email.setFrom("me@apache.org", "Me");
email.setSubject("The picture");
email.setMsg("Here is the picture you wanted");

// add the attachment
email.attach(attachment);

// send the email
email.send();

by paul

0 Comments »

, ,

Sending Mail with SMTP

I was was having problem on sending emails through Java.
I researched and found this apache API SMTP for sending email.
I just want to share this simple tutorial article on Discursive blog to everyone who needs it.

10.16. Sending Mail with SMTP | Discursive

by paul

0 Comments »

, , , ,

DDSteps Testing with Ant Tutorial

It has been almost a year that I've been using DDSteps for testing a back-end project module and I haven't been able to share or create an article about it. So to those people reading this article, I hope this helps you get started on DDSteps testing.
DDSteps is an integrated tool stack, combining the best open source testing tools for Java and adding the ability to resuse test cases and test data.


DataDriven so that when you want to test "sign up" on your site, you can test the same flow with both "George Bush" and "Владимир Путин". Just add another row to spreadsheet, that's all! - by ddsteps.org 
In this tutorial, I will discuss a little about this simple java application I made focus on testing and generating html test results using ant. We will not deal much on the theories since those kind of information are already provided on www.ddsteps.org. I usually use eclipse as my preferred IDE in developing the application. The application makes use of ant to generate the HTML JUnit reports.

Read more »

by paul

0 Comments »

,

Use Arguments on Property File

The goal on this tutorial is to be able to format a value on a properties file given its parameter or arguments. It is best describe as passing value as a parameter and inserting those values on the string retrieved from the properties file.

To better understand what I'm doing, read and understand my example code below.

Property File Sample
message.welcome= Welcome {0} to {1}!
message.thank= Thank you for you visit {0}.

Read more »

by paul

1 Comment »

, , , ,

Embedded Jetty in Spring MVC, IoC/DI


I was trying to configure embedded jetty in a spring application that implements MVC(Model View Controller). I want to utilize single spring applicationContext xml file for IoC(Inversion of Control) and DI(Dependency Injection) on dispatcher servlets.

The goal is to be able to use or reference beans configured/located on already been loaded spring application context. Read and understand my resolution below.

Read more »

by paul

1 Comment »

, ,

Tutorial on Android Views - Part 2

In this article, we will be dealing with another types of Android views. They are the RadioGroup, RadioButton, ProgressBar and AutoCompleteTextView. By learning the following views, it will broaden your understanding on android views that will help you build your own android application. 

Lets start by creating a new android project on eclipse. See the screenshot beside for android project specifics. 
 
RadioGroup and RadioButton
This two views is basically used to let users choose something among available options. RadioButton has two available states. It is either checked or unchecked.  Once a RadioButton is checked, it cannot be unchecked unless its grouped along with other radio button on a RadioGroup. A RadioGroup is a type of view that is used to group one or mmore radio buttons, thereby allows a user to select only one radiobutton or only one option.

Read more »

by paul

0 Comments »

,

Check If a String Contains a Substring in Java

This article shows some useful ways on checking a string that contains a substring. I find this topic relevant to document as I may someday use this on another project. Also, other developers might look for an article online to help them solve their problem. Since this topic is very basic Java, I only added short description and sample code below. 

Read more »

by paul

0 Comments »

, ,

Tutorial on Android Views - Part 1

On my previous articles, we had a discussion on the android's definition and layout. I assume that you have already learn basics on manipulating android layout. In this and on the next article, we will be exploring and dealing more on the various types of commonly used views such as TextView, EditText, Button, ImageButton, CheckBox and ToggleButton. Those widgets are likely the most commonly used in developing android applications.

Lets begin by creating a new project on eclipse:

After which, create an Android XML under res/layout and name it basicviews.xml having written inside is the following code below:

Read more »

by paul

3 Comments »

, ,

Tutorial on Android Layout

On my previous article, I've discussed more on the theory and definition of an Android. In this article, we will be dealing more on the technical aspect of developing android application layout. I will walk you through various elements that make up the user interface(UI) and how to position different widgets on an android screen.

Terms to remember:
  • Activity - the basic unit of an android application. It contains views and ViewGroup. 
  • View - a widget that has an appearance on screen.
  • Widget - are user interface components like buttons, labels, text boxes, etc.
  • ViewGroup - a special type of View that provides the layout in which you can group views, order the appearance and sequence your views.
Just an additional information; In a typical android project, UI is defined using an XML file located in the res/layout folder. An example is main.xml located in res/layout folder.  During runtime, the .xml file where you defined your UI is loaded using the onCreate() event handler of your activity class and using setContentView() method of the extended Activity class. Moreover, during compilation time, each of the element in the defined UI xml file are compiled into an equivalent Android GUI class wherein its attributes are represented by methods.

Read more »

by paul

0 Comments »

, ,

Web Service Tutorial in Java

Web Service is a piece of software that makes a service available on web. It uses a universal standard XML processing. It is interoperable in a sense that it enables a .NET software on a Windows Server to communicate to a JAVA software on a Unix. In other words, its not bound to a specific programming language or an operating system.
  • "Provider agent" implements a Web service
  • "Requester agent" (a.k.a. "client") makes use of that Web service
  • WSD(Web Service Description) represents a "contract"
  • Specifies the message formats, transport protocols, locations 
What we want to do in this article is to create a project where it utilizes a web service online. I plot the step by step way of utilizing a web service through terminal.

Read more »