32,204 Topics
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| | i have no insert method and still its adding node in linkedlist. code below have no error so you can run to see the problem better. if u run this it will ask u to enter a command. i only have two commands exit and display. display command will print … |
 | Hi everyone I am having trouble finding the nth node of a binary search tree in an inorder traversal. I am getting NullPointerExceptions for any numbers other than 2 and 3 and even those print out the wrong values. If anyone could help it would be greatly appreciated. The method … |
| | package battleship; public class BattleShip { public static void main(String[] args) { Addons a = new Addons(); Board b = new Board(); Computer c = new Computer(); Human h = new Human(); LinkedList list = new LinkedList(); while(a.intro()) { a.sleep(1); a.countDown(5); b.prepareBoard(); do { h.play(b.getBoard()); a.checkWinner(b.getBoard()); System.out.println("How the Board stands."); …  |
 | hi!guys i am very glade to told you that you guys must learn java programing language because i think aproximate one billion devices are running java...so first of all i recommeded you that you guys get the "The complete Java reference book 2"it is the best book for you guys …  |
 | public class HelloWorld{ static int a; public static void main(String []args){ System.out.println("Hello World"); HelloWorld h =new HelloWorld(); a = h.foo(); System.out.println(a); } int foo() { try{ throw new Exception(); } catch(Exception e){ System.out.println("catch"); return 9; } finally{System.out.println(a);return 10;} } } When I ran the above code output was: Hello World …  |
| | How would I put the output is rows of ten? public static void main(String[] args) { int count = 1; int j = 0; // for (the numbers from 100 to 200) for (int i = 100; i <= 200; i++) // if (this number is divisible by 5 or … |
| | I have a java project which is written by JCreator.I've never use JC before(I'm a netbeans user) I installed JCreator and now can't open the project.Maybe I don't know how... There is .project and .classpath files and src , bin and .settings folders. |
| | package battleship; import sun.audio.*; import java.io.*; public class Sound // Holds one audio file { public void playIntro() { AudioStream bGM; try{ bGM = new AudioStream(new FileInputStream("intro.wav")); AudioPlayer.player.start(bGM); } catch (IOException error){} } } I have that on one of my games and the music doesnt run, any help? If … |
 | Hello, I am trying to access a binary file with scanner functionality. I am trying to extract integer, long double value from the binary file. The binary file formation is as follows The binary file is in little Endian and is structured as follows: * * <ul> * <li>1 integer: …  |
| | Hi everyone I am trying to make a project "Remote Administration" in which i have to connect with computer using RDP I am beginner of android and I must submit this project soon so, anything you can help with?? i don't want source codes please tell me what to look …  |
| | Hi All, This is Bhanu Teja M. I just wanted to write a online quiz application, which various people can participate in quiz from different locations. For this, i need to maintain a single screen for all users and maintain and display the same data,status across the all participents. Can … |
| | i was test collision between ball and box. i have a ball and long rect(platform) on screen. the collision part works fine. but i want to test where the ball is touch the platform. so if ball touch the ball from left or right or top or bottom. but when …  |
| | Hello Friends, I am having trouble with a homework assignment and was wondering if you would please take a look at it for me. I have to write a program that receives a prefix expression. Then it calculates and displays the result. It does this by using a stack to … |
 | I'm currently try to write a program as below : A college would like to automate managing courses offered to students. initially only three courses are involved. each courses has a code, a name, students enrolled, a current number of student, a maximum number of students allowed (quota) which is … |
 | 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 … |
| | This might be a very basic question but still I am not able to figure out why is the foll code giving stackoverflow exception in main?? public class HelloWorld{ public static void main(String []args) { System.out.println("Hello World"); Animal c = new Animal(); } } class Animal { Animal e = … |
| | I wrote a code to represent the factory design pattern as below: package com.factory2; public interface CreditCheck { Double creditLimit(int id); } package com.factory2; public class CreditCheckFactory { public boolean isAgencyUp(){ return true; } public CreditCheck createCreditCheck(){ if(isAgencyUp()){ return new CreditCheckOnline(); }else{ return new CreditCheckOffline(); } } } package com.factory2; … |
 | **I use Netbean Platform in learning coding in Java, but now it has gotten to a level where i need a server application to further my learning,but i saw Apache Tomcat and Glassfish server as part of plugins that came with my netbean, so i want to know what i … |
| | Iv been developing a parser using java, however due to testing on multiple machines i have errors now on one machine i corrected as the machine was using jdk/jre v1.6, and on my newer machine jdk/jre 1.7 The question i have is, what are the implications of using the String … |
| | Hi Friends, I have PSKC XML file.. That contains my Salt/Key,IV(Initialization Vector),Encrpted Data,password also. Now, I am trying to Do Password Based Encyption and Decryption Using PBEWITHSHA1AND128BITAES-CBC-BC Algorithm. It works,If i generate salt and IV randomly. But,it fails to work,if i dont generate it randomly... Instead of generating Salt and … |
| | i had a question but i am not sure what the problem is. if user keep right key down. than camera should move left.and my player should fall down bc there are two empty(sky,'0') under player. move camera. 2d map: (0=sky,1=ground,2=player) 0,0,0,0,0,0,0,0,0 0,0,0,0,0,0,0,0,0 2,0,0,1,0,0,0,0,0 1,1,0,0,1,0,1,1,1 int camera_pos_x = 0; int … |
| | My TCP/IP server socket is not accepting connections from other systems. When i try to send data from the client to server within the same system i see them working fine, Here is what i get by printing the stacktraces - Waiting for client on port 50000... java.net.SocketTimeoutException: Accept timed … |
 | Hello everyone, I am puzzled... when I run a JUnit test, there is no main method in the class and it still runs. Alo, a java/maven web app does not have a main anywhere. My assumption is that it is hidden somewhere on some class I somehow extend or something. … |
| | I am making a video poker game for my class assignment. I have the program running that gives out 5 cards. I don't know the easiest way to do this but say after card1 suit1 is dealt I want those values stored so card2 suit2, card3 suit3, etc.... cannot have …  |
 | Hello guys, I am currently doing my final year project on OCR. I will have to come up with chain-code algorithm as the recognizer. Any of you guys have sources or links that will lead me to the solution? I have googled much but I could not find a Java-based … |
| | Hi everyone! I am having troubles making the second IF statment execute in my code: Pattern dl_noise_rates_p = Pattern.compile("\\d+\\s(.+)\\s(.+)\\s(.+)\\s(.+)"); Matcher dl_noise_rates_m = dl_noise_rates_p.matcher(lineString2); if(dl_noise_rates_m.find()){ String s_dl_nr1 = (dl_noise_rates_m.group(1)); //checking for non numbers pulled in the regex if(s_dl_nr1 == "NaN"){ //| s_dl_nr1 == "NaN" | s_dl_nr1 == " NaN" System.out.println ("OMGOMGOMGOMGOMGOMGOMGOMGOMG … |
| | Hello! I am using for the first time the JTabbedPane. The problem that I have is that I want to apply the paint method only for the first tab, but it also paints the second one. How can I solve this problem? |
 | Hi, So i'm trying to write a program that will work like a credit card database. The instructions say to add a file with 10,000 names that was given to us and add it to our project file. a scanner is suppossed to read through that file and add each … |
 | I'm going through a netbeans tutorial on Java ecommerce located here: http://netbeans.org/kb/docs/javaee/ecommerce/setup-dev-environ.html When I get to "running the web project, step 1", I click the green run button in the NetBeans IDE. In my browser, it goes to http://localhost:8080/AffableBean, but no HTML is displayed. If I view the admin domain …  |
 | Hello Dont ask why but lets say I want to encrypt "hello" and the encrypted forum is "238324" I want to do: String avariable=dcrypt(238324); //avariable should now hold hello public string dcrypt(String encryptedtext) { //do decrypt stuff return descriptedtext; //decriptedtext should be hello } Basically thats what I want.....Dont care … |
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