32,199 Topics
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| | Write a program to find the transpose of the graph G, where the input and the output of the program are represented as adjacency list structure.  |
 | I've written the code already, and it compiles, but gets the following runtime exception: [COLOR="Red"]java.lang.IllegalThreadStateException at java.lang.Thread.start(Thread.java:595) at threads.ThreadStarter.run(ThreadStarter.java:52) at java.lang.Thread.run(Thread.java:619)[/COLOR] I've higlighted the line that throws the exception. I have no idea what's wrong, my knowledge in threads is sadly lacking. If anyone could help me out it would … |
| | Hey, I am trying to use this program, it is supposed to ask one multiple choice question of the user and get the response. For some reason it will not work for me. I am using Ready to Program by HoltSoft. Please help me. [CODE]import java.awt.*; import java.applet.*; import java.io.*; … |
| | ok, so i have an int[][] that i need to be printed out into a file. it needs to be printed line by line with each number seperated by a comma. how does this look? im not getting any output... [CODE]import java.io.*; import java.util.*; public class TestingII { public static …  |
| | I tried making a Java desktop application to learn Java. So far, a mouse click event draws rectangles in the document and stores the rectangle in an array in ProjectApp.java. This isn't the problem but my rectangles disappear when I minimize and maximize the window. I normally use VS C++ … |
| | Hello all, I am new to java and programming. You will be able to tell that by my post. I have a program that needs to take info from my textField and store it in an 2d array. Then do calculations and output the calculated data into a textArea. So … |
| | plxxxxxxxxxxx help me thts ma java assg for mean median and mode i have calculated some part of it for group data can any 1 help me to find out the rest offfffffff [code]String ans; int total=0,small=0,large=0; int numEntries=0; float range=0.0f; float wid = 0; // user enters number String … |
| | I'm writing a program that reads information from three seperate classes. Here is my code: [CODE] public class Animal { protected int id; protected String type; protected double mass; //------------------------------------------------------------------------ // Sets up an animal with the specified ID number, type and weight. //------------------------------------------------------------------------ public Animal (int animalID, String animalType, … |
| | I'm having a problem changing an abstract class to an interface. I changed the abstract class (Bounceable) to an interface but I'm not sure what I need to do with the concrete classes (Tennisball, Basketball) that implement the interface. The change to an interface is also affecting the output test … |
| | Hello, can anyone help me please..I have four tables in mysql as follows: Employye1,Employee2,Employee3,Employee4. I need to retrieve records from any table i choose and display the record on a JSP page. I just need to know how to pass the table name as parameter? for e.g Select Emp_name from … |
| | I created a JApplet game for a class project. My game is basically a dodge-ball game. I have 5 dodgeballs bouncing around the screen with a player starting in the middle. The object is to mouse drag the player dodging all of the balls bouncing. The problem I am having … |
| | Yeah, this is homework, but I have spent many hours and have asked many other students at my school to help and so far we haven't solved my problem. I am trying to write a program to figure out the first fit, best fit, and worst fit. I have randomly …  |
| | what is the actual difference between java and javax packages  |
| | [QUOTE=peter_budo;695619]Not enough that you opened thread that is 4 years old, you did not bother to read [URL="http://www.daniweb.com/forums/faq.php?faq=daniweb_policies"]forum rules[/URL] (hijacking thread, no emails in the post) you also did not even consider to read sticky thread "[URL="http://www.daniweb.com/forums/announcement9-2.html"]We only give homework help to those who show effort[/URL]". On top of all …  |
| | Hey, i dont get any compile errors on this code but when i run it i dont get an evaluated value, what have i missed??? [CODE] import java.util.Scanner; import java.util.StringTokenizer; import java.lang.Math; public class main { static Stack<String> stack = new NodeStack<String>(); static final String operators = "+-/*^"; static Scanner … |
 | Let us know which language you are coding in and we can move this to the correct forum. |
| | Ok, so I wrote a very simple programme, just to practice multithreading. I know it can be coded better, but I'm still learning about this, so please be lenient. This is my code so far: [CODE]package threads; // Create a thread import java.io.File; class threads implements Runnable { // This … |
| | hello every one i am haveing problem in code i.e whenever i try to write in file it overwrite tthe previous one.I am using this code [code] File f=new File("c:\\paul.txt"); //f.createNewFile(); BufferedWriter br = new BufferedWriter(new FileWriter(f)); BufferedReader br1=new BufferedReader (new InputStreamReader(System.in)); FileReader fr=new FileReader(f); // FileWriter frt=new FileWriter(f); // … |
| | [B]Card.java[/B] [CODE] package poker; public class Card { int suit; int rank; public Card () { suit = 0; rank = 0; } public Card (int s, int r) { suit = s; rank = r; } public int getSuit () { return suit; } public int getRank () { … |
| | Hi , how do i write a program on touch screen zoom , sroll left to right and right to left , how to open keyboard(virtual) when we focus on textfield or textarea. |
| | @SuppressWarnings("unchecked") class MyBooks implements Comparable{ static final CompareLastName c1 = new CompareLastName(); static final CompareFirstName c2 = new CompareFirstName(); static final CompareTitle c3 = new CompareTitle(); static final ComparePrice c4 = new ComparePrice(); static final CompareISBN c5 = new CompareISBN(); static final CompareDate c6 = new CompareDate(); private String lastname, … |
| | hello i am trying to write in file and when ever i do this previous lines overwrites in file .i am trying this code File f=new File("c:\\paul.txt"); //f.createNewFile(); BufferedWriter br = new BufferedWriter(new FileWriter(f)); BufferedReader br1=new BufferedReader (new InputStreamReader(System.in)); FileReader fr=new FileReader(f); // FileWriter frt=new FileWriter(f); // BufferedReader brz=new BufferedReader(fr); … |
| | Posted below is currently my main class that works for a java blackjack game, i do have 3 other classes for the full game to work but this class is where my problem is. my problem is in the west border i have so much being written to the GUI … |
| | I have deployed a simple web service using Apache Tomcat 6.0 and Axis 1.4 in Windows XP. Now the server is very simple: [CODE] import java.io.*; import java.util.*; /* HelloWorld.java This is our web service */ public class HelloWorld { public String getHelloWorld(String id) { String retName=""; try { File … |
| | I'm a little new to programming and for my class I've been asked to do a recursive program where you input a directory and it will find all the files in that directory and any subdirectories in that directory, etc etc until there aren't any more subdirectories. Quite honestly, I'm … |
| | I've been trying to figure out the code for this problem for a long time and I'm stumped. The problem is: The library for which we design this system has only books and magazines that are available for library members to borrow from its circulation. Users of the library are … |
| | Hello, I am trying to do a first fit allocation in java my problem is how do i keep track of which memory block i have cheked and if there are no suitable blocks put the job in a waiting queue. Thanks for all help [CODE] import java.util.*; import java.util.Scanner; … |
| | Hi All, I am just wondering how i would check if the below checkbox was clicked or not? [CODE] private JCheckBox postage = new JCheckBox("Postal Delivery?");[/CODE] When the form is submitted i need to check the box and get a boolean saying true or false based on clicked or not … |
| | I need to get my jlist to simply display a one word subject. When I do it the way below, it obviously prints: "subject: blah location: blah date: blah path: blah." How can I get to set an JList to simply display the string title of the picture rather than … |
| | I need to know a way to read a XML file from java. for example if the XML file is >> [code] <PHONEBOOK> <PERSON> <NAME>Joe Wang</NAME> <EMAIL>joe@ffff.com</EMAIL> <TELEPHONE>202-999-9999</TELEPHONE> </PERSON> </PHONEBOOK> [/code] I need to get the persons name, as in when i specify "NAME" the name 'joe wang' should display. … |
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