The static initializer is a static {} block of code inside java class, and run only one time before the constructor or main method is called.
Questions tagged [static-initializer]
89 questions
10
votes
1 answer
C++0x static initializations and thread safety
I know that as of the C++03 standard, function-scope static initializations are not guaranteed to be thread safe:
void moo()
{
static std::string cat("argent"); // not thread safe
...
}
With the C++0x standard finally providing standard…
R Samuel Klatchko
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9
votes
4 answers
get static initialization block to run in a java without loading the class
I have a few classes as shown here
public class TrueFalseQuestion implements Question{
static{
QuestionFactory.registerType("TrueFalse", "Question");
}
public TrueFalseQuestion(){}
}
...
public class QuestionFactory {
static…
randomThought
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9
votes
7 answers
Use of static init block
I know how a static init block works.
Can anyone please tell me some typical uses of it.
gameover
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8
votes
6 answers
Invoke static initializer again
Once a class is loaded is there a way to invoke static initializers again?
public class Foo {
static {
System.out.println("bar");
}
}
Edit:
I need to invoke the static initializer because I didn't write the original class and the…
Kalecser
- 1,143
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8
votes
2 answers
Loading, Linking, and Initializing - When does a class get loaded?
My understanding of classloading was that a class gets loaded when it is first needed (to put it in a very simple way). Running the following sample with -verbose:class and a modified version of the Iterators class that prints a message when its…
Haasip Satang
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8
votes
3 answers
C code involving {}
I saw this in some C code:
Wininfo W = { sizeof(Wininfo) };
What the heck does this mean?
Paul Reiners
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7
votes
1 answer
C# Static Initializer With (and Without) Mixed Static Constructors
I've been through the relevant section of C# Language Spec (v5.0) but I can't find the piece that's relevant to what I'm seeing.
If you have a run of the code below, you'll see the output below, which is what I expect:
using System;
class Test {
…
Tom Baxter
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7
votes
3 answers
Why can't an inner class use static initializer?
Quoth JLS #8.1.3:
Inner classes may not declare static initializers (§8.7)......
This is demonstrated as such:
class A {
class B {
static { // Compile-time Error: Cannot define static initializer in inner type A.B
…
Pacerier
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6
votes
4 answers
Do objects of built-in types have special static initialisation order precedence?
I'd have expected the following code to yield a segmentation fault (or otherwise UB):
struct T {
T();
};
T t;
char const* str = "Test string";
T::T() {
std::cout << str; // zero-initialised, only!
}
int main() {}
That's because t is…
Lightness Races in Orbit
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6
votes
6 answers
Java basics: a static function without a name, or return type
public class Main {
public static final Logger LOGGER = Logger.getLogger(Main.class.getName());
static {
try {
LOGGER.addHandler(new FileHandler("errors.log",true));
}
catch(IOException ex) {
…
Itako
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6
votes
4 answers
can not initialize static final variable in try/catch
I am trying to initialize a static final variable. However, this variable is initialized in a method which can throw exception, therefor, I need to have inside a try catch block.
Even if I know that variable will be either initialized on try or on…
Mayday
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6
votes
3 answers
What does the {{ syntax on ArrayList initializer really do
I have recently found what appears to me to be a new syntax for statically initializing an ArrayList:
new ArrayList() {{
add("first");
add("second");
}};
My question is, what is really happening there? Is that a shortcut for defining…
Gus
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6
votes
3 answers
Can a Java static initializer call a static method?
Can I call a static method from a static initializer in Java? Is the following valid and guaranteed to work as per the Java specification?
public class Foo {
private final static int bar;
private static int generateValue() {
return 123;
…
Garret Wilson
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6
votes
2 answers
Static final field initialization from static initializer
Why isn't it possible to access static final fields from a corresponding static initializer using the declaring class as qualifier (in a static way)?
At first, I thought this was an Eclipse bug:
I also consisted some lack of knowledge, because…
Franz Ebner
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6
votes
6 answers
Java: what is static{}?
Can someone explain me what the following is?
public class Stuff
{
static
{
try
{
Class.forName("com.mysql.jdbc.Driver");
}
catch ( ClassNotFoundException exception )
{
…
Omu
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