Should there be any specific order in which I should write the following :
public static void main() ?
In other words, can I re-shuffle public,static,void in any order ?
Why or Why not ?
How do you handle clean up when the program receives a kill signal?
For instance, there is an application I connect to that wants any third party app (my app) to send a finish command. What is the best say to send that finish command when my app has been destroyed with a kill -9?
Imagine you have a NB Platform application and you would like to use that application via some other app that you've created.
In essence, how can you learn how to start an application if you don't want to use the NB Platform or IDE. You'd somehow need to figure out the stuff that NB Platform does for you when it loads up a module.
Hello,
I have an object of CalendarEntry
I know that http://www.google.com/calendar/feeds/[email protected]/allcalendars/full is the feed url of all calendars
but how I can get this feed url from CalendarEntry instance?
Because I wanna post a new entry in a specified calendar and I need this url.
Thanks!
How would i call this function in my main?
private JFrame getMainpageframe1() {
if (mainpageframe1 == null) {
mainpageframe1 = new JFrame();
mainpageframe1.setSize(new Dimension(315, 306));
mainpageframe1.setContentPane(getMainpage());
mainpageframe1.setTitle("Shopping For Less: Main Page");
mainpageframe1.setVisible(true);
mainpageframe1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
return mainpageframe1;
}
public static void main(String[] args) {
//call that function to output the JFrame?
}
thanks
Hello,
I have a datetime field in mysql table and i am using JPA for persisting data but only date goes in database. Time always shows 00:00:00. What should i do?
I am not doing any manipulation with Date. All i do is to assign new Date() to a variable and store it in database.
What am i doing wrong?
I'm working on a small sketch in processing where I am making a "clock" using the time functions and drawing ellipses across the canvas based on milliseconds, seconds and minutes. I'm using a for loop to draw all of the ellipses and each for loop is inside its own method. I'm calling each of these methods in the draw function. However for some reason only the first method that is called is being drawn, when ideally I would like to have them all being visibly rendered.
//setup program
void setup() {
size(800, 600);
frameRate(30);
background(#eeeeee);
smooth();
}
void draw(){
milliParticles();
secParticles();
minParticles();
}
//time based particles
void milliParticles(){
for(int i = int(millis()); i >= 0; i++) {
ellipse(random(800), random(600), 5, 5 );
fill(255);
}
}
void secParticles() {
for(int i = int(second()); i >= 0; i++) {
fill(0);
ellipse(random(800), random(600), 10, 10 );
background(#eeeeee);
}
}
void minParticles(){
for(int i = int(minute()); i >= 0; i++) {
fill(50);
ellipse(random(800), random(600), 20, 20 );
}
}
I need to generate n percentages (integers between 0 and 100) such that the sum of all n numbers adds up to 100.
If I just do nextInt() n times, each time ensuring that the parameter is 100 minus the previously accumulated sum, then my percentages are biased (i.e. the first generated number will usually be largest etc.). How do I do this in an unbiased way?
Process p;
String line;
String path;
String[] params = new String [3];
params[0] = "D:\\prog.exe";
params[1] = picA+".jpg";
params[2] = picB+".jpg";
try {
p = Runtime.getRuntime().exec(params);
BufferedReader input =
new BufferedReader
(new InputStreamReader(p.getInputStream()));
while ((line = input.readLine()) != null)
System.out.println(line);
input.close();
} catch (IOException e) {System.out.println(" procccess not read"+e);}
i don't get any error, just nothing
in cmd.exe prog.exe is working fine
What to improve in order to make this code working?
Hi Experts,
I want to write "Arabic" in the message resource bundle (properties) file but when I try to save it I get this error:
"Save couldn't be completed
Some characters cannot be mapped using "ISO-85591-1" character encoding. Either change encoding or remove the character ..."
Can anyone guide please?
I want to write:
global.username = ??? ????????
How should I write the Arabic of "username" in properties file? So, that internationalization works..
BR
SC
hi,
this might be trivial (please forgive me for that)
but my eventual goal is to have a string like
def newline= 'C:\\www\web-app\StudyReports\\test.bat'
but my old line only have one '\',
i tried different ways of using the following
def newline=oldline.replaceAll(/\\/,'//')
but did not work at ...
could someone help me out.
This is in the context of a local Processing program. I would like to run an external program to get some data. Is there a popen() or equivalent function I can use?
I am testing the performance of a data streaming system that supports continuous queries.
This is how it works:
- There is a polling service which sends data to my system.
- As data passes into the system, each query evaluates based on a window of the stream at the current time.
- The window slides as data passes in.
My problem is this, when I add more queries to the system, I should expect the throughput to decrease because it can't cope the data rate.
However, I actually observe an increase in throughput.
I can't understand why this is the case and I am guessing that it's something to do with the way the JVM allocates CPU, memory etc.
Can anyone shed any light to my problem?
Hi All.
I'm implementing a web based document management system and I'd like to implement ACLs in my system.
My formal requirements are hierarchal permissions (documents inherit permissions from their folders) user groups (users can dynamically create groups and associate users with groups). Such groups can have permissions on objects in the system.
My code will query permission on objects in two cases:
1. Manipulating a single document
2. Listing all documents where a manipulation is possible
The latter requirement seems the achilles heel for Spring Security ACLs (their method seems likely to incur multiple DB hits for each document I manage)
Anyone know of another ACL implementation?
Thanks!
This has been asked several times for several languages but I can't get it to work.
I have a string like this
String str = "This is a string.\nThis is a long string.";
And I'm trying to replace the \n with <br /> using
str = str.replaceAll("(\r\n|\n)", "<br />");
but the \n is not getting replaced.
I tried to use this RegEx Tool to verify and I see the same result. The input string does not have a match for "(\r\n|\n)". What am i doing wrong ?
I'm trying to exclude the zero in this nested for loop here using != 0; but it is not doing anything. I'm trying to get the probability of each out come of 2 six sided dice when rolled. I must figure out the amount of times they are rolled first, but a die doesn't have a zero in it, so I must exclude it. I can't figure out why this doesn't work.
for( die2 = 0; die2 <= 6 && die2 != 0; die2++)
for( die1 = 0; die1 <= 6 && die1 != 0; die1++)
System.out.println("Die 2: " + (die2 * userInputValue) + " " + "Die 1: " + (die1 * userInputValue));
I have a question that I dont really know where to start. So I thought i'd ask it here.
Basically, I have a drop down with names in it. I want these names to be in alphabetical order.
Populating the drop down happens as follows;
I query a database and pull down an Id and Name, make a object called "UserList", and set the name and id variables with what I get back.
I then add this object to an ArrayList. I do this over and over.
I then convert this collection to an array, and pass it to my JSP page using
session.setAttribute("userList", UserList);
I then populate the drop down as below.
<c:forEach items="${usersCompanysList}" var="c" >
There probably is a simple answer but how to I sort these names?
I have about 4 threads. One thread keeps checking some data that the other thread is updating. The others are doing some processing in the background. All have been started at this point.
My question is when the checking thread sees that the data has not been updated yet I currently sleep for a little bit but is there any way for me to tell the system to back to executing the thread that does the updating?
That or is there any way I can put something like a listener on the data(a String) and once its updated an event will fire that will do what it needs to do?
I tried using yield() and it seemed to just keep returning to the thread I called yield() from.
Thanks
I need to setup LookAndFeel Files in JDK 1.6.
I have two files:
napkinlaf-swingset2.jar
napkinlaf.jar
How can I set this up and use it?
I would like a GTK look and feel OR Qt look and feel, Are they available?
I have a cookie that is formatted like partA:partB. The colon is not escaped in any fashion. I need to read this cookie in a JSP script, and request.getCookies() is only returning partA. I can't change the cookie because it is used in multiple applications, and fixing the cookie would break production code. Any ideas how I can read the full value of this cookie?
I need to do a search in a map of maps and return the keys this element belong.
I think this implementation is very slow, can you help me to optimize it?.
I need to use TreeSet and I can't use contains because they use compareTo, and equals/compareTo pair are implemented in an incompatible way and I can't change that.
(sorry my bad english)
Map m = new TreeSet();
public String getKeys(Element element) {
for(Entry e : m.entrySet()) {
mapSubKey = e.getValue();
for(Entry e2 : mapSubKey.entrySet()) {
setElements = e2.getValue();
for(Element elem : setElements)
if(elem.equals(element)) return "Key: " + e.getKey() + " SubKey: " + e2.getKey();
}
}
}