How to load value to a static variable on the run

hi all
i have a question about static variable. i need to have a variable to keep a value from DB shared by all instances. the variable is given value when the first instance is created. but from time to time, the value in DB may change, but i still need to maintain this shared value among instances. the static variable has life time as long as the program runs, does that mean if i need to change the value, i need to stop the program, and restart to load the new value? thanks.

can the static variable be accessed within a
non-static method, for instance, set the value by
setXXX() method?Yes, and oddly enough, that usually how I access all my variables...
Example...
public class StaticTester {
       static String theString = " My Message ";
       public void setMessage(String mess){
                  theString = mess;
       public String getMessage(){
                  return theString;
       public static void main(String[] theArgs){
                  StaticTester myTest = new StaticTester();
                System.out.println(myTest.getMessage());
                myTest.setMessage(" a New Message ");
             System.out.println(myTest.getMessage());
}Hope this helps...
- MaxxDmg...
- ' He who never sleeps... '

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How to give different value to a static variable???

Hi all:
Is there any solution to set different values to a static variable???I had try two ways but all have errors!
1.Way_1
protected String tmp=null;
protected void initSituation(int sayorpress)
if (sayorpress==0)
tmp = "string1";
else if (sayorpress==1)
tmp = "string2";
protected static String RESOURCE_STRING = tmp; <---error
Error:non-static variable tmp cannot be referenced from a static context
2.Way_2
protected void initSituation(int sayorpress)
if (sayorpress==0)
protected static String RESOURCE_STRING = "string1"; <---error
else if (sayorpress==1)
protected static String RESOURCE_STRING = "string2"; <---error
Error:illegal start of expression at
not an expression statement at
Thank you very mich!!!

Try this:
protected static String RESOURCE_STRING = null;
protected void initSituation(int sayorpress)
if (sayorpress==0)
yourClass.RESOURCE_STRING = "string1";
else if (sayorpress==1)
yourClass.RESOURCE_STRING = "string2";
You cannot declare a static variable inside a method. But you can access a static variable thorugh your class.

My friend synced a video to my ipod but it erased all my data on my ipod,but i cant figure out how to load my old libray back without deleting the movie. my friend cant tell me the password. How can I get my old library back without deleting the movie?

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Linnwarner wrote:
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This is illegal. There is no doubt about it

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java.sql.Connection conn = null ;
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Hi,
I am using a CMP query in websphere, in which i am trying to execute a select query.
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SELECT OBJECT(o) FROM HrTmmbrAct o WHERE o.tmmbrActC IN ( 1,2,3 ) AND o.effD BETWEEN '2000-02-11' AND '2008-02-22'
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How to load 2 records out of 4records to the datasource....

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How to load a unknown number of variables?

Hi!
I'm trying to load a known number of variables. So I set up this code in flash:
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How to reference a static variable before the static initializer runs

I'm anything but new to Java. Nevertheless, one discovers something new ever' once n a while. (At least I think so; correct me if I'm wrong in this.)
I've long thought it impossible to reference a static variable on a class without the class' static initializer running first. But I seem to have discovered a way:
public class Foo {
public static final SumClass fooVar; // by default initialized to null
static {
fooVar = new SumClass();
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public static final SumClass barVar;
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}Warning: Speculation ahead.
Normally the initial reference to Foo would cause Foo's class object to instantiate, initializing Foo's static variables, then running static{}. But apparently a static initializer cannot be triggered from within another static initializer. Can anyone confirm?
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public class Foo {
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DMF. wrote:
jschell wrote:
But there are times when you need to use it. I seriously doubt that.
I would suppose that if one did "need" to use it it would only be once in ones entire professional career.Try an initializer that requires several statements. Josh Bloch illustrates one in an early chapter of Effective Java, IIRC.
Another classic usage is for Singletons. You can make one look like a Monostate and avoid the annoying instance() invocation. Sure, it's not the only way, but it's a good one.
What? You only encounter those once in a career? We must have very different careers. ;)
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This thread is bizarre. Why ask a question to which the only sane answer, you have already ruled out?

Value of x , static variable..

In the method callMe() i am returning x , which is 0, that gets assigned to x in main(the same static variable), then i am incrementing x. But the value of x is 0.
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In the method callMe() i am returning x , which is 0,
that gets assigned to x in main(the same static
variable), then i am incrementing x. But the value of
x is 0.
Whats happening.
public class TestClass {
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syntax subtletly... i++ and ++i both do the same thing : increment 'i', but...
i++ // value : i BEFORE incrementation
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hth

Urgent!!! How to give a value to a BEx variable in the planning fuction?

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hongwei

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I have one problem. I want to load a class, which isn't in the classpath
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How to load value to a static variable on the run

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