54 Solved Topics
Remove Filter  | The last time a major change happened, i remember in a community chat few people (including me) were saying that the new changes looked a bit girly :P That won't work this time though. This is so totally different from vintage Daniweb. Also, i see some stuff probably not working …  |
| | My Program is about Directed Graphs. It reads a list of edges like : `25 589` , and puts 589 into the adjacency list (a linked list) of 25. My input file has about 5 Million such `v w` edges, with about 800K nodes/vertices, for each of which there will … |
| | The below post is just something i thought of contributing here for young( or old ) members starting out in C. In (effectively) 3 lines of code , i hope to give an intro about pointer arithmetic and how endian-ness in windows affects the output. #include<stdio.h> int main(void){ int a … |
| | Remember High-school maths ? there was this greek letter Sigma ( if i remember correctly ) , followed by an algebraic function like `f(n)` , where `n = a to b` would be short-formed as `a` below the `sigma` , and `b` sitting on top of it. I want to … |
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| | viewed <M/>'s profile ... dude has 105 endorsements ! Congratulations :D  |
| | I think i have understood the basic locks , synchronized statements and methods etc etc . I would like to actually program something that used all this. Something that is prone to breaking if one is not careful , also would love if there is swing involved ( i read …  |
| | So anyone here who loves sublime text ? I do , and i use it on windows as my sql editor and compiler. (i have a batch set up which complies the code on mysql , and the output is tee'd back to another open text file) |
| | Since the underlying data-structure used here is an array , which is itself iterable via `for-each()` , i'm wondering how much benefit implementing `Iterable` will provide here. I would appreciate if someone could review my code and suggest any further improvements. **Code:** import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; class ResizingCircularArray<E> … |
| | i had previously worked with the GNS3 and cisco packet tracer console as a part of college lab work. It involved setting up and simulating LAN and VLAN topologies. Iv seen people in the CS dept , as part of their course , simulate various TCP/IP functions using C and … |
| | last night , the downvote counter was at 6. it hasnt been 8 hours , and my downvote counter rockets upto 27! all with just 2 members who have downvoted. one point though : when i click the "posts voted down" , shows only 3 posts. ps : i dont …  |
| | writting this : N = args[1].split("\\s+").length; with commandline argument like : `echo "A B C D E F G H I" | java Subset 3` , will this consume similar memory as would have been the case if i parsed the `"A B C D E F G H I"` … |
| | whats even more is that if i create any new file in the "src" folder of the project , it doesnt create any new bin folder to place the class file. i dont know where the class files are of the compiled source code . only when i manually `javac … |
| | while trying to compare times between two different ways of determing whether a number is odd/even without using modulo, i thought of using `long long int`s which my codeblocks compiler aint supports . and so i installed pelles c.( supports c99/c11 which inturn supports long long stuff.. ) and im … |
| | for a basic ascii checker code of less than 10 lines , i want to print out stuff immediately , instead of after a newline. i understand that stdout is a bufferedstream , and so it will by default wait for a '\n'. i was looking at [this](http://stackoverflow.com/questions/1716296/why-does-printf-not-flush-after-the-call-unless-a-newline-is-in-the-format-strin) page for …  |
| | im trying to do this : alter table project_info change column number proj_id int not null auto_increment, add primary key (proj_id); but mysql tells iv got an error. any help with whats wrong here ? i followed this from head first sql book (page 210 if anyone's interested ) . |
| | im on win 8. neither can i find the bin folder as i could on my xp machine , nor do i get any command line. googleing didnt help much either. either i got some really hard to understand mysql doc page , with no specific answer to my problem … |
| | my `display()` method is public and looks to be defined , however eclipse says that its not defined. this is a code for an amortized time resizing circular array. can someone help me out here ? also , please do point out if you see something else wrong with the … |
| | [This](http://docs.oracle.com/javase/tutorial/essential/concurrency/deadlock.html) is the example i was looking at. The docs say that trying to access the bowBack() method is creating the deadlock , but im new to threads , and i really dont understand why this is happening. In need of some guidance here... |
| | 1st of all , let me mention my hardware : **HP G6 laptop with win8** : amd a4 4300M, radeon graphics : 512 MB 7420G + 1GB 7670M , 4 gb 1600 Mhz ram. **4 yr old Desktop running xp sp2** : amd athlon x2 250 , inbuilt graphics : …  |
| | doing this works : contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); contentPane.setLayout(new BorderLayout(0, 0)); textArea = new JTextArea(); scrollPane = new JScrollPane(textArea); contentPane.add(scrollPane,BorderLayout.CENTER); setContentPane(contentPane); however this doesnt : contentPane = new JPanel(); textArea = new JTextArea(); scrollPane = new JScrollPane(textArea); contentPane.add(scrollPane,BorderLayout.CENTER); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); contentPane.setLayout(new BorderLayout(0, … |
| | i was looking up some websites for small scale companies around my area, during which i found a few websites that didnt really look much. i saw the html code , and also , seemed fairly easy and simple to me , a newbie html learner. i was wondering if … |
| | [this](http://docs.oracle.com/javase/tutorial/uiswing/examples/components/TextComponentDemoProject/src/components/TextComponentDemo.java) is the code i was looking at.Its about how to use JTextPane and related swing text Components along with actions and keymaps. my question is that in this part textPane = new JTextPane(); textPane.setCaretPosition(0); textPane.setMargin(new Insets(5, 5, 5, 5)); StyledDocument styledDoc = textPane.getStyledDocument(); if (styledDoc instanceof AbstractDocument) { doc … |
| | i saw the docs for both .. but found the terms a bit hard to get. i was hoping to get some simple answers here. thanks for your time :) |
| | can the members suggest some books/links that takes advantage of what i already know about oop (the basics , from java) and utilises it to make learning C# a faster process? perhaps i should have posted this on the C# forums , felt i should keep it here as my … |
| | one of my good friends wrote [this](http://developertimes.wordpress.com/) blog here. he asked me for an opinion , however , i havent used linux much... only used centOS for about a semester in college for a networking course. i was hoping the members here could give some opinions about the blog. thanks … |
| | i started html from the book head first html n css , and just in the second chapter , they're talking about having your own website and that it would help out in learning html. i dont really know anything about this, can anyone suggest if having my own website …  |
| | this is the problem code : import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.io.IOException; public class Prepared { public static void main(String[] args) { try { readerHelper r = readerHelper.GET_INSTANCE; System.out.print("enter username: "); String user = r.is().readLine(); System.out.print("enter password: "); String pass = r.is().readLine(); Connection con … |
| | the following is taken from joshua bloch's effective java. pg 82: public class InstrumentedHashSet<E> extends HashSet<E> { // The number of attempted element insertions private int addCount = 0; public InstrumentedHashSet() { } public InstrumentedHashSet(int initCap, float loadFactor) { super(initCap, loadFactor); } @Override public boolean add(E e) { addCount++; return … |
| | i basically need mySQL for learning JDBC connections. will be thankful to any information regarding this matter. didnt find anything concrete on the net... |
| | hi everyone :) im trying to open this project , but when i double click it , vs2010 opens with error on the forms. double clicking the forms shows that the file doesnt exist at the particular directory , even when its visibly there. its probably a trivial thing , … |
| | i was thinking of downloading some database software that would help me learn sql. so far i have only *read* sql , ie havent done any practical sort of thing. i made a post earlier in this forum , where i was told that sql server express will be a … |
| | hi everyone :) i want to learn vb6 , but i dont know where to start. I have a college project related to creating banking software where vb6 is being used as the frontend. i have around 1 month to get my vb6 skills up , as the project has … |
| | i was wondering if there could be some notification system like facebook which pops up a number as soon as something in your daniweb world has changed. currently , i have to refresh to get the info if im already watching the opened page , and if im opening daniweb … |
| | from today morning , my keyboard just cant keep up. i type a few words , and then it starts displaying the first letters! quite a trouble this ! i tried google-ing about keyboard becoming slow , but the few forum threads i found suggested a format, but thats not …  |
| | can anyone help me understand this code part ? this is about binary minimum heap , ie root has the lowest key.. the part of the code im trying to understand checks whether the subtree ( of a certain minHeap pq[1..N] ), rooted at k is also a min heap … |
| | i want to sort a list of two dimensional points based on their polar angles with respect to a particular point. this will a part of a bigger code to find collinear objects from a set of points. the method i thought of for doing this is is: 1. create … |
| | i have to create a queue where the dequeue operations will be random. that is , a random location will be chosen, and deleted after returning the data stored at that location. i was going through the two underlying datastructures that im allowed to use **:** linked list , and … |
| | in an assingment, i have to implement a deque ( double ended queue ). the underlying datastructure is allowed to be arrays or linkedlist. only that im not allowed to use any prebuilt java api that does the above. (like the java.util.LinkedList api) implementing the above using doubly linked list … |
| | forgive my ignorance, there must be a really simple answer to this, but im unaware of it, also, tried google-ing for it, but didnt know what to look for exactly, and didnt get much good answers either. my question is, since 2^32 is around 4Gb, so max usable RAM on …  |
| | code for : Percolation using Weighted Quick Union Find Algorithm. this is a homework assignment. iv made the code do what its supposed to do, and it works perfectly. The only problem im facing now is to model the code structure according to the given API. when i try to … |
| | im learning some algorithms , and trying to come up with a version for Quick find using union find. the algorithm works like : 1. get user input for size of the array (the array holds the data on which quickfind will work) 2. create and initialize the array based … |
| | this is an exam question i failed to answer properly, im trying to work it out. the code i came up with is below, it works ok, but i was hoping if anyone could help in improving it. iv read in various threads in daniweb itself about making a code … |
| | this code gives the correct result upto size 6 (i'v run this a few times, and 6 seems to be the boundary), although the intermediate steps are all insane! then onwards, from size 7, it returns minimum value 0 /*minimum of an array using recursion*/ #include<stdio.h> #include<stdlib.h> int findMin(int* arr,int … |
| | i dont understand the reason why im geting the errors i am with this code... errors with arraylists, also a few other errors like symbol not found etc s.. i corrected the ones i could, but the ones (5 of them in total )im still geting, i dont understand them... … |
| | this code is my attempt at modifying a simple game i found in the book "head first java".. (pg-98 if anyone's interested) the game is about sinking battleships! ... actually... its just about declaring some blocks of a virtual array to comprise a battleship, and the user makes guesses about … |
| | this is my code, from the book *Head First Java* ... class Echo { int count=0; void hello() { System.out.println("Helloooo....."); } } public class EchoTestDrive { public static void main(String[] args) { Echo e1 = new Echo(); Echo e2 = new Echo(); // output 10 //Echo e2 = e1; // … |
| | **the code works perfectly, just i got something i dont understand...** i'v been trying to get a hold of recursion and sorting for about 3-4 days now, im getting some of it, but still not happy enough.. i searched for some good code for binary search and merge sort on … |
| | i was watching [this video](http://www.youtube.com/watch?v=jTSvthW34GU&list=EC9D558D49CA734A02&index=2&feature=plpp_video) about type conversion and what the compiler does while converting from small byte formats to large byte formats(and vice versa) etc etc, and tried to write a code for it... but seems that function calls in my code are getting completely bypassed... once again, here … |
| | # code to convert any base input to any base output (base limited upto hexadecimal) # ## scanf() works , but gets() stops working from 2nd iteration ## *i apolozise beforehand for the length of this post, i hope there will be someone who'll bear with me :(* **here is …  |
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