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How does the Java 'for each' loop work?
...
for (Iterator<String> i = someIterable.iterator(); i.hasNext();) {
String item = i.next();
System.out.println(item);
}
Note that if you need to use i.remove(); in your loop, or access the actual iterator in some way, you ca...
Spring @Transaction method call by the method within the same class, does not work?
...andle the transactions, your code will work.
The simple and probably best alternative is to refactor your code. For example one class that handles users and one that process each user. Then default transaction handling with Spring AOP will work.
Configuration tips for handling transactions with Asp...
Which equals operator (== vs ===) should be used in JavaScript comparisons?
I'm using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing idSele_UNVEHtype.value.length == 0 inside of an if statement.
...
What is android:weightSum in android, and how does it work?
...e weightSum will be calculated to be equal to 3 as shown in the comment.
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
<!-- android:weightSum="3" -->
android:orientation="horizontal"
android:layout_gravity="center">
<Im...
At runtime, find all classes in a Java application that extend a base class
...ions:
Reflections reflections = new Reflections("com.mycompany");
Set<Class<? extends MyInterface>> classes = reflections.getSubTypesOf(MyInterface.class);
Another example:
public static void main(String[] args) throws IllegalAccessException, InstantiationException {
Reflecti...
Download attachments using Java Mail
...
Without exception handling, but here goes:
List<File> attachments = new ArrayList<File>();
for (Message message : temp) {
Multipart multipart = (Multipart) message.getContent();
for (int i = 0; i < multipart.getCount(); i++) {
BodyPart bodyP...
Check if a Class Object is subclass of another Class Object in Java
...rface;
Example:
assertTrue(Arrays.asList("a", "b", "c") instanceof List<?>);
b) Check if an Object is an instance of a Class or Interface (including subclasses) you only know at runtime:
Class<?> typeOrInterface = // acquire class somehow
boolean isInstance = typeOrInterface.isInst...
how to pass an integer as ConverterParameter?
...
Here ya go!
<RadioButton Content="None"
xmlns:sys="clr-namespace:System;assembly=mscorlib">
<RadioButton.IsChecked>
<Binding Path="MyProperty"
Converter="{StaticResource IntToBoolCo...
Delete ActionLink with confirm dialog
...onfuse routeValues with htmlAttributes. You probably want this overload:
<%= Html.ActionLink(
"Delete",
"Delete",
new { id = item.storyId },
new { onclick = "return confirm('Are you sure you wish to delete this article?');" })
%>
...
How do I address unchecked cast warnings?
...en affect the entire method.
Example:
@SuppressWarnings("unchecked")
Map<String, String> myMap = (Map<String, String>) deserializeMap();
There is no way to determine whether the Map really should have the generic parameters <String, String>. You must know beforehand what the pa...