75 Discussion / Question Topics
Remove Filter  | I was doing a bit of reading, and according to what I read, GUIs can be set up and realized in any thread, but doing more GUI work in a normal thread (non-EDT) after a call to setVisible can be dangerous. The explanation given is as follows: [QUOTE]The example constructs … |
| | In netbeans I added a scroll pane + bar inside one of my JPanels. When I drag enough items into the JPanel, the size of the JPanel increases in netbeans. How do I get it so that it stays at a fixed size, so I can use the scroll bar? |
| | I'm not sure what forum this fits into, if any, but the program itself is going to be written in Java (not that it matters much). My question is, what is the easiest software to use that I can create a drawing of a GUI with? The GUI I want … |
| | Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); Java Sun's site is down right now so I can't check but I'm guessing this is an old method since according to Eclipse, the method doesn't exist anymore. So my question is, are there any other ways to do the same thing? |
| | I have to write a program that mimics a digital clock w/ seconds, minutes, and hours. I'm sure I can get the displays working on my own and everything. My concern: what is the most efficient way to check the time? Should I just do Thread.sleep for 1 second then …  |
| | After some research I found this link [url]http://splainhow.com/jogl_eclipse.html[/url] which explains how to set up a project in Eclipse to use OpenGL with it. But I want to integrate the OpenGL libraries for JOGL with Eclipse so that I can import and use them with any projects. Does that make sense? …  |
| | I managed to delete the only up to date saved copy of an important Java project I had (I know, I know). I have the compiled .class files and I know it's possible to decompile them. Can anyone direct me to any references or anything to help me do this … |
| | If I have a hash function h(k, f(i)) and f(int i){ return c * i; } And the first index that it tells me to insert the element at already has an element there, what do I do? Would the proper way to insert an element the first time be … |
| | I'm trying to read in the whole file at once. If this code ever fails, my whole project will fail. I'm using the following: byte[] theFile = new byte[input2.available()]; then, input2.read(theFile); The API says something about blocking. What exactly is blocking, when will it happen, and how will it affect … |
| | [CODE]public void generateBits(Node root, int current, int counter){ if (root== null) return; if (root.left == null && root.right == null){ list.add(new HuffCode(root.theChar, current, counter)); } else{ current<<= 1; //move all the bits 1 spot to the left generateBits(root.left, current, counter+1); generateBits(root.right, (current | 1), counter+1); } }[/CODE] Somehow, this method … |
| | I had a problem w/ efficiency - The problem was that using String concatenation was inefficient for large text files, when reading the whole file into the String. I've since thought about it, and I guess this is because Strings are immutable - so every time concatenation is done, a … |
| | I'm having trouble with storing bits as a byte. I've read probably 30 different sources about this already. I'm doing Huffman Compression. Lets say I read in the character "c" and I am supposed to output "1010". How would I go about doing that? I know how to write bytes … |
| | I have two programs, one is a GUI and the other is a normal (non GUI) program. How do I make a method in the non-GUI program wait until a JButton on the GUI gets clicked before continuing? (No while loops) This is frustrating since I'm fairly certain somebody here … |
| | Hey, one of you guys suggested that I go on Wikipedia's page for hash tables. It was actually pretty informative. I'm pressed for time so I am doing separate chaining for my hash table because it seems like it will be one of the easiest to implement (and according to … |
| | parseInt does not seem to be throwing an exception when I pass a letter of the alphabet to it. I assume this is because ASCII letters are treated as integers. So my question is, is there a method that will do this: boolean isLetter(); And if not, how do I …  |
| | I need to build a hash ADT from scratch. This means no use of any java library methods or classes. Does anyone know of any good resources that will explain how hashing works and how this info is helpful to build one? For example, how find() works, how insert() works, … |
| | Is there any way that I can take a String and somehow use it as if its the name of one of my declared Objects? For example, if I have an Animal named germanShephard, is there some way I could say String gerSh = "germanShephard"; and then treat gerSh as … |
| | I read about data forwarding and according to my notes, a nop (no-op) is required before a beq operation and after a lw operation. What about sw? |
| | This is supposed to draw a line through the JButtons when square9 is clicked. It doesn't work but there are no errors and I don't see what the problem is. Ezzaral gave me the code to draw the line earlier. Obviously, the winning squares aren't always diagonal, so I will … |
| | I have a TicTacToe board and I need to draw a line through the X's or O's when someone wins. I know how to use the paint method, repaint, etc (as far as how they're called & the basics). I'm just not sure how to go about actually drawing the … |
| | I saw someone, I think it was s.o.s, recommend the use of BigDecimal to someone else. So out of curiosity, and having heard of BigDecimal before, I looked at the Javadoc to see how large the values it could hold were and how it held them. From the doc: "Immutable, … |
| | Its basically telling me it doesn't know wth the pow() function is. But at the top of the file, I have #include<math.h> so shouldn't that work? And right after I have the #include, I declared the function definition of bintodec, so that isn't the problem either. [CODE]int bintodec(char* array){ int … |
| | I'm confused how GridBagLayout can be used as if it was GridLayout(0,2). For example, I would like to lay out components like this: Label TextFieldForLabel Label TextFieldForLabel Label TextFieldForLabel Label TextFieldForLabel I thought by making a GridBagConstraints() Object, then setting the gridx and gridy variables, this could be accomplished (Java … |
| | All I can think is that there's something fundamentally wrong with how I programmed my GUIs. I have a program that initially displays a GUI which has 6 buttons. Each of these buttons, when clicked, displays a GUI. One of these GUIs in particular is a JTable of "Teams". Each … |
| | Ok so lets say I have any GUI that needs its contents changed while it is running, so that it will re-display the new contents. An example would be a JTable that just lists things from an ArrayList. So if I had an ArrayList<GroceryList> my JTable might have Cheese Crackers … |
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