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Replied To a Post in The Width of the Windows
Either Use an inner loop that prints the correct number of asterisks or blanks for each window or Have a long-enough string initialised to lots of asterisks and print a … -
Replied To a Post in Question about Socket/ObjectOutputStream Error
The client code above reads a single byte array from the socket then closes the socket. Obviously that's not going to read multiple objects! Is there some other code you … -
Replied To a Post in eclipse taking too long to open
Howmuch memory does your PC have? How much is free before you start Eclipse? -
Replied To a Post in Development Methodology
I'm a huge fan of Scrum http://en.wikipedia.org/wiki/Scrum_%28software_development%29 It's the exact opposite of the useless waterfall approach. It's one of the original Agile class of methodologies. I worked for Jeff Sutherland … -
Replied To a Post in creating objects and save them to a text file..
The compiler is your friend. If you compile this code the error messages wil show you some things to fix. In the meantime, here are some points: You create Person … -
Replied To a Post in Blue passenger train help
OK, that's ok. If there is anything you still want to verify or discuss please feel free to ask. -
Replied To a Post in Ascend/Descend
Once you have the array sorted ascending then you get the descending order by simply starting with the last element and working all the way back to the first. Ie, … -
Replied To a Post in run jar
> SomeClass.main(null) or something like that... Yes. That was the other solution I had in mind too, especially if he wants to interact with the classes in the jar directly. … -
Replied To a Post in run jar
In that case you can use the `ProcessBuilder` class - it lets you start an external process, set its working directory etc. See the usual API doc, or Google for … -
Replied To a Post in Passing an array between classes
What you suggest is what I would do too. I was pitching my response a beginner level, hoping to avoid something like this, which would leave him in the same … -
Replied To a Post in Login
There are lots of people here who will freely give their time to help you become the best Java programmer you can be. There's nobody here who is interested in … -
Replied To a Post in java
What is your question? -
Replied To a Post in run jar
Do you simply want to start the application in that jar executing, or do you want to use the classes inside that jar? -
Replied To a Post in Passing an array between classes
stultuiske's comments are correct, but his solution doesn't quite apply to your case. His advice is correct for printing an instance of a class you define, but not for printing … -
Replied To a Post in Groovy regulat expressoin
... and if not maybe someone has some ideas about how to write one? That would be a really ace project. -
Replied To a Post in Confused Java Learner
Hi Xabush. Welcome to Daniweb. I'm not going to join in any sematic debate about "intermediate", but I will refer you to the top sticky in this forum, which is … -
Replied To a Post in How do I create a pair of longitude and latitudes to show a 2 mile radius o
Maybe a misunderstanding? This is a forum where people can come for help with their Java code. It's not a free coding service. I posted some formulae and algorithms that … -
Replied To a Post in How do I create a pair of longitude and latitudes to show a 2 mile radius o
^ that's what I thought too, and I asked him if he had any circle-drawing methods available, but his answer is perfectly clear: "*by means of a polygon parameter expressed … -
Replied To a Post in How do I create a pair of longitude and latitudes to show a 2 mile radius o
You can generate a set of x,y distances to define n points on the circle relative to its center using x=sin(a), y= cos(a) for n values of a between 0 … -
Replied To a Post in How do I create a pair of longitude and latitudes to show a 2 mile radius o
You need to decide how "smooth" you want your circle to be if you are approximating it by a polygon. Three points is the minimum to define a 2D area, … -
Replied To a Post in How do I create a pair of longitude and latitudes to show a 2 mile radius o
So that's any three points on the circle? Eg 2 miles North, 2 miles South 2 miles East of the location? -
Replied To a Post in To display retrieved image from oracle database using java
^ yes. Whatever encoding is used to convert the blob to an Image must be the inverse of whatever encoding was used to create the blob in the fist place. … -
Replied To a Post in Java Address Book
Welcome to DaniWeb! People here will be happy to help you - but you'll get the best value from that if you ask specific questions. Looking at your code there … -
Replied To a Post in To display retrieved image from oracle database using java
Your second line creates a byte array of the right size, but you do not copy the data from the blob into that array, so the array is just full … -
Replied To a Post in Application Doesn't Terminate In Eclipse On Close
One that's declared in the class, but not inside the definition of any method or constructor, and isn't static. -
Replied To a Post in How do I create a pair of longitude and latitudes to show a 2 mile radius o
I'm no expert, but maybe this will help: There's a simple formula for the distance between two long/lat points (Google!). You can rearrange that that to make the distance fixed … -
Replied To a Post in Application Doesn't Terminate In Eclipse On Close
That's just a restriction on inner class binding to local variables (just ask if you want he full explanation). Simply make your timer variable an ordinary instance variable and the … -
Replied To a Post in Sort a text file into an object class in descending order
There's a lot of very tangled code there, so maybe best to start again and go one step at a time. First, you need to read the file and create … -
Replied To a Post in Add item to combobox
How many times have we said this in the Java forum... Never NEVER *NEVER* do this when writing new code: } catch (Exception e) { } If/when there is an … -
Replied To a Post in reading int from file start from number 2
Your file name looks wrong - too many back-slashes. YOu only need two backslashes in your String literal to represent a single backslash in the file path -
Replied To a Post in error: cannot find symbol - I do not see where I am wrong
Line 10 - the method name is spelled differently -
Replied To a Post in Most Repeated char in a String
Not in the standard API, no. May I guess that you have been set this as an exercise? -
Replied To a Post in JavaFX Label setText NullPointer
Yes, there's no reason for Swing Timer when you're using JavaFX, so your solution is correct. There must be a JavaFX equivalent to `javax.swing.timer`, maybe `AnimationTimer` or maybe `Timeline` ?? -
Replied To a Post in JavaFX Label setText NullPointer
`start` returns when it has executed all the code you put in it. It's `Application.launch` that never returns. Where exactly did you put the code to start the Timer? Did … -
Replied To a Post in JavaFX Label setText NullPointer
You still have exactly the same problems I described in my previous post: tick() contains an infinite loop that just runs at 100% CPU usage start() never finishes because it … -
Replied To a Post in JavaFX Label setText NullPointer
Maybe because you never finish the start method? (It calls tick() which never returns). Anyway, that while loop in tick() looks very wrong to me - depending on what update() … -
Replied To a Post in Memory Allocation on Object Creation
Classes and instances are all allocated on a JVM heap. Parameters and local variables in methods are allocated on the stack. -
Replied To a Post in JavaFX Label setText NullPointer
That's why its better to `System.out.println("controller: " + controller);` etc! I just did a little test case, running from a main that starts with an Application.launch(...) and, just like it … -
Replied To a Post in JavaFX Label setText NullPointer
*Maybe* that code is running off the Application.launch - before you initialise the game variable? <update> Javadoc for launch... > public static void launch(java.lang.String... args) > > Launch a standalone … -
Replied To a Post in Memory Allocation on Object Creation
Beuase all the methods are the same, there's just one copy in memory. That's loaded when the class is loaded ie sometime before you first use it. The same is … -
Replied To a Post in mysql search in java
Hello Sardar. Welcome to DaniWeb. Please take a few minutes to familiarise yourself with DaniWeb Memnber Rules before posting. eg "Do ensure that all posts contain relevant content and substance … -
Replied To a Post in Cache using Java Maps. Clearing unwanted entries
Why not just a scheduled clean-up that uses `map.remove(key)` to remove unwanted entries? -
Replied To a Post in JavaFX Label setText NullPointer
Standard procedure: print all the variables at that line to see which one is null. It could be controller, controller.totalGoldLabel, game, or the returned value from game.getTotalGold() -
Replied To a Post in JFrame.DISPOSE_ON_CLOSE
Somewhere you have some code that creates the JFrame - somewhere in there you need a mainPanel = (your new JPanel) - without seeing the code I can't be more … -
Replied To a Post in multithreading in parallel in java
You just created a new topic with exactly the same question and exectly the same error. If you persist in ignoring the DaniWeb rules you will get infracted - possibly … -
Replied To a Post in JFrame.DISPOSE_ON_CLOSE
Becuase the JFrame disposes correctly the first time, that shows the mainPanel variable correctly refers to that JPanel. Then you create a new JFrame for the second user, but the … -
Replied To a Post in JFrame.DISPOSE_ON_CLOSE
You really haven't posted enough code to show where the problem lies, but from those two lines here's a guess... are you sure you are updating the mainPanel variable when … -
Replied To a Post in multithreading in parallel in java
You started a new thread for no apparent reason, and without marking this solved - we'll continue the discussion here. Please read my previous post. Your latest code makes exactly … -
Replied To a Post in Problem when accessing applet and oracle forms(runs in jinitiator)
This is from WikiPedia... > In 2007 Oracle announced, that for the upcoming release of Forms version 11, Jinitiator would no longer be needed and that users should migrate to … -
Replied To a Post in how to create jar file in java?
If you Googled you would very quickly find the Oracle tutorial: http://docs.oracle.com/javase/tutorial/deployment/jar/index.html but if you are using NetBeans or Eclipse then both those IDEs have their own tools to simplify …
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