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Differences between action and actionListener
....
The actionListener method has by default the following signature:
import javax.faces.event.ActionEvent;
// ...
public void actionListener(ActionEvent event) {
// ...
}
And it's supposed to be declared as follows, without any method parentheses:
<h:commandXxx ... actionListener="#{bean.act...
Where are shared preferences stored?
...ame was always the same for them. See initial commit for PreferenceManager.java, getDefaultSharedPreferences function here: android.git.kernel.org/?p=platform/frameworks/…. And it wasn't changed in the latest version of PrefencesManager.jave too: android.git.kernel.org/?p=platform/frameworks/…
...
Creating an API for mobile applications - Authentication and Authorization
...this is the case, then I would approach it as follows (but only 'cos I'm a Java developer so a C# guy would do it differently):
The RESTful authentication and authorisation service
This will work only over HTTPS to prevent eavesdropping.
It will be based on a combination of RESTEasy, Spring Secu...
When should you NOT use a Rules Engine? [closed]
... noticed that the rules files (the project used Drools) contained a lot of java code, including loops, functions etc. They were essentially java files masquerading as rules file. When I asked the architect on his reasoning for the design I was told that the "Rules were never intended to be maintaine...
How to create a drop-down list?
..."@android:drawable/btn_dropdown"
android:spinnerMode="dropdown"/>
Java:
//get the spinner from the xml.
Spinner dropdown = findViewById(R.id.spinner1);
//create a list of items for the spinner.
String[] items = new String[]{"1", "2", "three"};
//create an adapter to describe how the items ...
What can MATLAB do that R cannot do? [closed]
...e: MATLAB includes a JVM and has flawless and robust interoperability with Java. All of Java's vast universe of libraries is accessible to the MATLAB user. The MATLAB IDE can be almost be used as a poor man's Eclipse. In comparison, rJava is very immature, despite the very valuable effort of its cre...
What is Dependency Injection and Inversion of Control in Spring Framework?
...l(IoC) Container:
This is common characteristic of frameworks, IoC manages java objects - from instantiation to destruction through its BeanFactory. - Java components that are instantiated by the IoC container are called beans, and the IoC container manages a bean's scope, lifecycle events, ...
Understand the “Decorator Pattern” with a real world example
..., or the Decorator pattern. Due to the nature of dynamic languages such as Javascript, this pattern becomes part of the language itself.
// Person object that we will be decorating with logging capability
var person = {
name: "Foo",
city: "Bar"
};
// Function that serves as a decorat...
Difference between a virtual function and a pure virtual function [duplicate]
... function implicitly makes the class it is defined for abstract (unlike in Java where you have a keyword to explicitly declare the class abstract). Abstract classes cannot be instantiated. Derived classes need to override/implement all inherited pure virtual functions. If they do not, they too will ...
Unrecognized SSL message, plaintext connection? Exception
I have a java complied package to speak with the https server on net. Running the compilation gives the following exception:
...