Guys do we inherit from Object like from any other class (except of course that we don't have to explicitly state that) or there is some special privileges to Object class and it's not inherited as other classes?
I have the following interface:
public interface MyFunctor {
int myFunction(int x);
}
And I created a class which implements this interface :
public class Myfunction1 implements MyFunctor {
}
how use in main project? i have corrected mistake now i need how run it in main project?
i mean in public static void main(String[]args)?
Is there an analogous form of the following code:
if(month == 4,6,9,11)
{
do something;
}
Or must it be:
if(month == 4 || month == 6 etc...)
{
do something;
}
I am trying to write an if statement that checks if this month has more than 31 days.
I have a certain value of date and time say 28-3-2012(date) - 10:36:45(time) . I wish to convert this whole timestamp to nanoseconds with the precision of nanoseconds. As in the user would input the time and date as shown but internally i have to be accurate upto nanoseconds and convert the whole thing to nanoseconds to form a unique key assigned to a specific object created at that particular time.
Could some one please help me with the same..
I have a control which is listened for both mouseDown and mouseDoubleClick events. However when mouseDoubleClick occure, I don't need mouseDown event to be handled. (Now both events fired when doubleClick happens)
How can I stop handling mouseDown event when mouseDoubleClick occured?
I have a LinkedList of Components, each of which I would like to add into two different JTabbedPanes. For some reason, Swing is only letting me put each component into one or the other. The code I'm using is the following:
/* The two tab panes */
JTabbedPane leftTabs = new JTabbedPane();
JTabbedPane rightTabs = new JTabbedPane();
for (int i=0; i<tabPanes.size(); i++) {
rightTabs.add(tabPanes.get(i));
leftTabs.add(tabPanes.get(i));
}
Whichever add call I put last is the one that works; if I add to leftTabs last, then rightTabs ends up empty, and vice-versa.
Any ideas on how to get this working? Thanks!
Can any one please share their experience on
"When do we make a call to use between Synchronised statement and Synchronised Block"
Any Performance Issues?
I don't know why this condition is never satisfied:
I'm comparing two ArrayList values, and it is always false.
if ( (Integer) results.get(rank) == (Integer) experts.get(j))
I'm debugging and I have exactly the same 2 values: 3043 and 3043
However it doesn't work.
thanks
I would like to parse this Gstring with groovy :
Format type : CodeClass, Name, Accession, Count.
def txt = """ <Lane_Attributes>
ID,1
FovCount,600
FovCounted,598
...
</Lane_Attributes> """
And get a map like :
Map = [ID:1, FovCount:600, FovCounted:598]
How can I :
- extract text between tag and ?,
- and convert to a map ?
i need to implement a project with visual intimacy between persons,can anyone recommends an algorithm for person's intimacy in phone contact?
intimacy attenuate over time(the intimacy attenuates automatically if you havnt click/dial it for a long time).
Assume in my address book:
Person Intimacy(0-100%)
A 40%
B 80%
C 10%
A's intimacy needs raise after i call A ,like this
Person Intimacy(0-100%)
A 42%
B 80%
C 10%
nothing happens after follow 5 days, A,B,C's intimacy need decline,like this
Person Intimacy(0-100%)
A 37%
B 78%
C 8%
thanks for everyone's answer
Hey.
I was coding here the other day, writing a couple of if statements with ints that are always either zero or one (~bools), and I asked myself:
Should I use if (int == 1) or if (int != 0) ?
Is there any difference at all?
Please, don't answer with stuff regarding the int may being more/less than 1/0, that's not what I want to know.
I have an ObjectManager class that is used to process payments. It is wrapped over the Order entities, so new instance has to be created when processing is required. I need to prevent the situation when several ObjectManager instances are dealing with the same order simultaneously (it happend once because of some errors on the remote payment processing center, somehow they called our callback urls twice). I'd love to get an advice how to implement it more efficiently.
For now, I am thinking about something like that:
public class OrderManager{
private static final CopyOnWriteArrayList<Integer> LOCKER =
new CopyOnWriteArrayList<Integer>();
private static synchronized boolean tryLock(Integer key) {
return LOCKER.addIfAbsent(key);
}
private static void releaseLock(Integer key) {
LOCKER.remove(key);
}
public void processPayment(Integer orderId) throws Exception{
if (!tryLock(orderId)) {
return;
}
try {
//operate
} finally {
releaseLock(orderId);
}
}
//remainder omitted
}
Instead of going through each (+) sign at the left and clicking them to expand the collapsed code snippets, is there a shortcut or menu item (I couldn't find it, VS has that) to expand all the collapsed code/comments at once?
Thanks.
Is there a pretty print API for a mathematical String somewhere?
For example:
"10000000 - 234564"
Becomes
"10,000,000 minus 234,564"
I can make my own but can someone give me some pointers on how to do the "," part?
I'm on my first week with android and would appreciate any insight if it's possible to hook or override the default behaviour when an android application reads their values from the resource-files to the shown layouts.
What I want is to over time be able to add new/updated strings OTA and store locally and then on launch of application load new values instead of the ones in the default /res.
Ideally i guess, would be an override of setContentView.
Files holding updates will be in same xml-format as those in /res.
(Please, no advices in other ways to do this. Just need to know if it's at all possible, without hacking the SDK)
regards,
/t
public class Node{
Node p,l,r;
int height;
String s;
{
/** class body**/
}
}
String[] S=new String[5000];
int i=0;
while (i<5000){
Node x=new Node();
x=S[i];
}
I want to make 5000 Node object.
above code assign same variable name x every time but i want different variable name .
then how to declare 5000 class variable name without declaring it manually.
is there something by which i can create 5000 Node class object with ease.
Few questions on over riding.
I am interiting a method openRead from another class, the method is to be overridden so that the scanner class uses the provided delimiter pattern, which is referenced. I need to make use of the scanner class useDelmiter method
method from another class
[code]
public boolean openRead() throws FileNotFoundException
{
sc = new Scanner(new File(fileName));
if (fileName != null)
{
return true;
}
else
{
return false;
}
}
[/code]
delimiter
[code]
protected final String DELIMITERS = "[\s[^'a-zA-Z]]";
[/code]
I'm at a loss to how i over ride this using the constant delimiter.
Public Class A
{
public A()
{
system.out.println("con call");
}
static
{
system.out.println("static call");
}
{
system.out.println("ins call");
}
Public static void main(string[] args)
{
new A();
new A();
}