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Replied To a Post in Problems with public static void main
The default access is not public, and public/private are not the only alternatives. See http://docs.oracle.com/javase/tutorial/java/javaOO/accesscontrol.html -
Replied To a Post in Creating/aligning the ascii table in a text file
Hve a look at System.out.printf - allows you to specify the format for what you print. -
Replied To a Post in problem in showing balls
No, I was referring to the post immediately before mine, specifically to `super.getGraphics()` etc. The code you just quoted is 100% OK as it is. The overall structure of your … -
Replied To a Post in Find the most frequently used words across multiple files
Using Java 8, or an inferior older version of Java? -
Replied To a Post in Find the most frequently used words across multiple files
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 Adding Controls to a background label, and structuring the source code
... in which case I'd ignore JavaFX for now. J -
Replied To a Post in Adding Controls to a background label, and structuring the source code
... and (another) final observation... You are using Swing - the current standard for cross-platform Java GUIs, but as of Java 8 Oracle are starting to push JavaFX as a … -
Replied To a Post in JavaFX multiple errors
> Caused by: java.lang.IllegalStateException: Location is not set. > at javafx.fxml.FXMLLoader.loadImpl(Unknown Source) > at javafx.fxml.FXMLLoader.load(Unknown Source) ... seems to suggest there's something missing in your scenebuilder FXML file? Update: It … -
Replied To a Post in Adding Controls to a background label, and structuring the source code
Excellent! Glad to help. One tiny bit of feedback - you explicity but unneccessarily set a few things that are the default values or inappropriate anyway: layered panes have a … -
Replied To a Post in problem in showing balls
No no no! Only ever draw on a Swing Graphics when you override `paintComponent(Graphics g)` (or, sometimes, `paint(Graphics g)`) Swing has all kinds of internal optimisation, including double-buffering that you … -
Replied To a Post in Java projects for learners
This thread is for people to suggest project ideas, not to post actual projects or solutions. If you want to discuss how to implement one of these, or discuss actual … -
Replied To a Post in Adding Controls to a background label, and structuring the source code
IDE screen designers are fine for data entry forms and the like, but hopeless for artistic or visually-excting games. You'll also see alot of advice here saying that it's better … -
Replied To a Post in Adding Controls to a background label, and structuring the source code
Right, your plea has melted my heart. Here's the simplest eg I can come up with. It adds a background label (z coordinate 0) (just solid yellow, but could be … -
Replied To a Post in Server split message and save data on a text file
Sorry, no time to digest all that today, but in general... Your "server" is just a place to accept connections and start a client handler thread for each connection. That's … -
Replied To a Post in Adding Controls to a background label, and structuring the source code
OK You have to master all the material in that tutorial if you want to work with overlapping ojects. I know it's not easy, but programming isn't easy. Just sit … -
Replied To a Post in Adding Controls to a background label, and structuring the source code
That's got too complicated - you seem to have kept code from each approach you have tried, and it's all in there muddled together. It's definitely time to start again … -
Replied To a Post in Basic ideas cannot understand?
No problem. Any time you get stuck, we'll be here. -
Replied To a Post in Basic ideas cannot understand?
> Could someone explain this could with deep detail? line by line? I doubt anyone has the time or motivation to do that. Look at some beginner's tutorials, and come … -
Replied To a Post in Java snacktime bot
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 place button on upper left corner of JFrame with GridBagLayout
Read the Oracle tutorial http://docs.oracle.com/javase/tutorial/uiswing/layout/gridbag.html in particular, see the comment under `weightx, weighty` about half way down. -
Replied To a Post in eclipse vs vim
Programming is 90+% thinking and 10-% typing, at best. I'm the world's worst typist, but it doesn't matter because I use NetBeans that does much of the typing for me, … -
Replied To a Post in JDBC
Do you really think you have given enough information for anyone to know what you have done wrong? -
Replied To a Post in SQL Execption cannot find database Driver
This answwer is a bit late for a 3 year old question -
Replied To a Post in Need help with 'super' constructors..
OK, that fits the second solution in my previous post. Initialise hoursWorked to zero by passing zero to the superclass constructor ps `System.out.println(e.toString());` the `toString` is superfluous in println because … -
Replied To a Post in Need help with 'super' constructors..
Sounds like you need to supply a value for hoursWorked in the parameters for the constructors for Janitor and Lawyer, then you can pass those values up to the superclass … -
Replied To a Post in Need help with 'super' constructors..
hoursWorked is defined and initialised in HourlyEmployee. In class Janitor's constructor you have super(name, hoursWorked); now the parameters of a method (or constructor) are evaluated before the method is called, … -
Replied To a Post in Adding Controls to a background label, and structuring the source code
With overlapping controls JLayeredPane is the way to go. You use just ONE layered pane, put enerything in that and use the `depth` variables to define which things overlap in … -
Replied To a Post in Java nullpointer exception from mouse pointer
So `GameKeys.mouse[0]` is null, meaning you ctreated the array but you didn't initialise its elements. Maybe you just forgot to do that, or maybe one of your events is being … -
Replied To a Post in java swing JButton Problem
Add ActionListeners to the buttons of the second window. -
Replied To a Post in Adding Controls to a background label, and structuring the source code
Simply placing components on top of each other in an ordinary JFrame doesn't work. There are (at least) two ways to put controls over a background image: 1. Subclass JPanel … -
Replied To a Post in JoptionPane check conditions
If you do anything except press OK then the dialog returns a null instead of a String. So you need to assign the returned value to a String and test … -
Replied To a Post in JoptionPane check conditions
There are lots of ways to do this, here's one that is easy to read... have an `isNumeric` boolean. Start with it true, then set it false in the catch … -
Replied To a Post in Server split message and save data on a text file
Use a multi-thread client handler as per the Oracle tutorial! Then the client can do wahtever it likes without upsetting the thread where the server socket is listening. Maybe this … -
Replied To a Post in Java snacktime bot
This sounds like a cunning re-phrasing of the classic "Travelling Salesman Problem" with its O(n!) time for a brute force solution. There's a vast amount of info on the TSP, … -
Replied To a Post in How to implement AVL tree to store words read from input file
Sounds like either: there's some odd formatting in some of the files that's messing up your parsing or: it's to do with the sort order in which the words appear … -
Replied To a Post in How to implement AVL tree to store words read from input file
There's nothing in that code I can see that would just print "java.lang.NullPointerException". That suggests it's in one of your other methods -
Replied To a Post in How to implement AVL tree to store words read from input file
That's surprising. Maybe you can re-post the latest code? -
Replied To a Post in How to implement AVL tree to store words read from input file
That's because you carefully told Java not to tell you the line. In your catch block replace System.out.println(e); // just prints the type of error with e.printStackTrace();; // prints everything … -
Replied To a Post in How to implement AVL tree to store words read from input file
NPE mans you have an unitialised variable (it's still null). Catching it doesn't help, you have to find why it's happening and fix it. The exception message tells you the … -
Replied To a Post in How to implement AVL tree to store words read from input file
Line 22 you create a brand new new tree for every single word you read. -
Replied To a Post in Array throwing NPE
I didn't see why that would fail, but have you tried printing `ability` at each of those stages to see where the null creeps in? -
Replied To a Post in whats wrong with this code
If you hover on the red flags you should see a proper error message. Please post the complete exact text of the error messages. -
Replied To a Post in Loan Repayments Calculator by Java
Yes, people here will help - but do read the DaniWeb rules first, especially "Do provide evidence of having done some work yourself if posting questions from school or work … -
Replied To a Post in value not incrementing in Timer class
(I just ran your code) - as well as the countdown variable, you also have a problem with `clicked`. You start the "even" timer when clicked == 2, but that … -
Replied To a Post in value not incrementing in Timer class
After printing "even" are you clicking twice more to get to the "odd" case? (I notice you don't mention that in your descritpion of the desired functionality) -
Replied To a Post in value not incrementing in Timer class
No. The Timer looks OK. It's the `countdown` variable that looks wrong. Trying printing it inside the Timer's actionPerformed and you'll see what I mean. -
Replied To a Post in value not incrementing in Timer class
Countdown starts at 1 and decrements in the timer, but seems never to be reset, so it hits zero exactly once, then continues -1, -2, -3 etc. Keep going 2^32 … -
Replied To a Post in value not incrementing in Timer class
Is that the desired or the actual behaviour? What's wrong with it? -
Replied To a Post in how to create automated code reviewer using java
Time consuming to program? Yes, very. You'll probably end up with a complete java source code parser plus a raft of individual rule checks - all of which is perfectly … -
Replied To a Post in value not incrementing in Timer class
Please give a proper description of what should happen ve what actually happens.
The End.