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Closed 10 years ago.
My servlet on receiving first request from client:
//1.
ObjectInputStream in=new ObjectInputStream(req.getInputStream());
String r=(String) in.readObject();
in.close();
ObjectOutputStream writer = new ObjectOutputStream(resp.getOutputStream());
writer.writeObject(pk);
writer.close();
//ON receiving second request:
//2.
ObjectInputStream in1=new ObjectInputStream(req.getInputStream());
String s=(String) in1.readObject();
in1.close();
OutputStreamWriter writer1 = new OutputStreamWriter(resp.getOutputStream());
writer1.write(reverseStr);
writer1.close();
But on both request only 1. is getting executed. why?
I asked this question without actually studying servlets. A servlet's method(doPost(),doGet() etc) are each called time a request is made to the servlet. Only the init() method is initialized or executed only once.
So each time a call is made to the above servlet, it starts executing from #line1.
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Closed 8 years ago.
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Hi I am new to programming, but I can't seem to get this to work.
When I try to run the method from another method every thing stops
-(void)rotateMmovment {
}
-(void)stickMove {
[self rotateMmovment];
stick.center = CGPointMake(stick.center.x + x, stick.center.y);
}
First you should check either your method is running or not via using NSLog.its does't seems that you are facing problem due to calling method which have empty body
-(void)rotateMmovment {
NSLog(#"My method is running");
}
-(void)stickMove {
[self rotateMmovment];
stick.center = CGPointMake(stick.center.x + x, stick.center.y);
}
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 9 years ago.
I need to create a queue that executes asynchronously, but the order in which the tasks execute must be serial
dispatch_queue_t queue;
queue = dispatch_queue_create("com.test.app", NULL); //create a serial queue can either be null or DISPATCH_QUEUE_SERIAL
dispatch_async(queue,
^{
//Mycode for doing background http
}
I think that you are doing it correctly,
dispatch_queue_t queue;
queue = dispatch_queue_create("com.test.app", NULL); //create a serial queue can either be null or DISPATCH_QUEUE_SERIAL
dispatch_async(queue,
^{
task1;
task2;
...
all this tasks wil be done done sequentially
}
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 9 years ago.
I'm writing a program for parsing xml file I need to continually read the file that means if any change happens to the xml file at run time it must shown in the simulator also
I tried
NSThread *myThread =[[NSThread alloc]initWithTarget:self selector:#selector(doParsing) object:nil];
[myThread start];
and it calls the xml file but its not showing the change .How can I achieve that
Possibly something like:
NSThread *myThread =[[NSThread alloc]initWithTarget:self selector:#selector(callTimer) object:nil];
[myThread start];
- (void)callTimer
{
[NSTimer scheduledTimerWithTimeInterval:10.0
target:self
selector:#selector(doParsing)
userInfo:nil
repeats:YES];
}
- (void)doParsing
{
//Do the stuff here
}
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 9 years ago.
.h
#property (strong, nonatomic) IBOutlet UITextField *responsibleField;
.m
#synthesize responsibleField;
responsibleField.text = [goal valueForKeyPath:#"responsibility.actorNaam"];
and actorNaam is of type String in my datamodel ..
and my textfield is correctly connected
Error:
* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFSet _isNaturallyRTL]: unrecognized selector sent to instance 0x6e8e9d0'
What could be wrong?
[goal valueForKeyPath:#"responsibility.actorNaam"]; is returning an object of type NSSet responsibleField.text is expecting an NSString. Check your code where you set the value for key path responsibility.actorNaam.
The object at goal.responsibility is an NSSet, invoking valueForKeyPath: on an NSSet returns an NSSet of the values at the specified keypaths.
If you just want to "pick one" from the set, use this:
[ [ goal valueForKeyPath:#"responsibility.actorNaam" ] anyObject ] ;
i.e. the question is which responsibility do you want?
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
how to get a field press event in blackberry。
I write a component extends Field class , want to get a press event( press down still not press up ) .
please help me.
You can override this method:
protected boolean keyDown(int keycode, int time)
About the key up presses, there's a keyUp which is the method you should override to perform an action when the key is released instead of pressed (you can press and hold, and the action doesn't normally get fired until released). However, the OS doesn't callback on key up events unless it is explicitly told to do so by your app, for performance reasons.
You can overide keydown method of any field variable , or you can override navigationClick method of click
public ButtonField btn = new ButtonField("Hello");
protected boolean navigationClick(int status, int time)
{
Field f1 = getFieldWithFocus().getLeafFieldwithFocus()
if(f1 == btn)
{
<Perform your business logics>
}
Thanks