36,051 Topics
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| | public class StringSet { public static void main(String[] args){ StringSet ss1 = new StringSet(); ss1.insert("the"); System.out.println(ss1); } /** * Creates an empty StringSet object. */ private String[] data; public StringSet () { data = new String[0]; } /** * If e is null, throws an IllegalArgumentException. * Else, if there … |
| | Hello, I am facing this difficulty here : First I'll give code public class Game extends JFrame { private JPanel contentPane; //private JPanel settingPane; protected JLabel lblPlayerName2; // I am using this one for my testing JLabel[] lbls = new JLabel[9]; private final ButtonGroup buttonGroup = new ButtonGroup(); public static … |
| | /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package primenumber; /** * * @author mcmanuel */ public class PrimeNumber { /** * @param args the command line arguments */ public static void main(String[] args) { int num, a, b, …  |
| | I have a homework question that I'm a little thrown off by. Mostly because we haven't messed with strings much in class. Any help would be greatly appreciated. Using the UML class diagram as a reference, complete the Student class declaration. (fill in the blanks) class Person { public String … |
| | I am trying to understand how exactly you are meant to prompt a user for two numbers and then list a menu for them to choose the course of action they want to do with those numbers however I am quite new to java and do not understand the concept … |
 | Hey everyone. So I'm trying to create a siple text editor for handling HTML. I got the majority of the program written to where when you click the toolbar the text is inserted. The only problem is that it only inserts it at the end. So Now I'm trying to … |
 | Hello I have the following: String somestring="203/9834/345"; somestring.replace("/",""); System.out.println(somestring); But it does not remove the slashes. How can I remove them? Thanks |
| | this code works fine. all it's doing is setting collision around enemy. and if player touches player from the right than player moves to the right. if player touches enemy from left than player moves to the left. playerX = player x postion playerY = player y postion playerW = … |
| | i am newbies here. i need help in build fuzzy logic in java. actually i did not have any idea how to built it. i want to built a fuzzy system using java for my final project. # i need a sample as my guide to build this system. # … |
| | >Write a Java program that recursively reads ten names from a file, and then outputs the total number of characters in the names, the list of names, and the list of names in reverse order. All looping must be performed recursively. > Jay Walker Erol Flintstone C. Erol Madre Billy … |
| | can anyone help me in this. **what is top level class in java?**  |
| | Hi, Can anyone guide me that how to create interactive graphics (like the following link) 1) http://www.nytimes.com/interactive/2009/03/10/us/20090310-immigration-explorer.html. 2) http://www.guardian.co.uk/business/interactive/2012/oct/17/eurozone-crisis-interactive-timeline-three-years. I am new to languages and dont have any specific knowledge.So any suggestions from where to start,any self help tutorials web links or websites,etc Thanks, Viv Please try this link http://www.marijerooze.nl/thesis/graphics/  |
| | **Write a single Program in Java that illustrates the use of following Object Oriented Programming (OOP) features Classes Objects Inheritance Methods State** |
| | Am trying to draw image on jpanel or jlabel when button is been click on, so i added actionperformed on my button as follows. private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: Image imag = new ImageIcon(this.getClass().getResource("img/top_bg.jpg")).getImage(); showPix1.setLayout(new BorderLayout()); showPix1.add(new paintPhotos(imag,20,20), BorderLayout.CENTER); } I have a … |
| | StringBuffer sb = new StringBuffer(new String("Hello")); //Case 1 StringBuffer sb1; //Case 2 String s = new String("Hello"); // Case 2 sb1=s; //Case 2 StringBuffer sb3; //Case 3 sb3 = new String("Hello");//Case 3 Case 1 compiles fine and outputs *Hello* but Case 2 and Case 3 gives compiler error saying incompatible … |
| | hi, i'm new to java ,can any one please tell me what is iterator in java? |
| | so i know japplet, jframe, jdialog, jwindow, jpanel windows to create gui. japplet = you use japplet for website with no resizeable or main buttons jframe = ??? ... try to explain as much as you can. i want to know adv and dis of these window. |
| | `** # I know it should be written that : ArrayList ar = new ArrayList(); while(rs.next){ int mxtype = rs.getInt("mxtype"); } int mxtypes[] = ar.toArray();//here will be point out ,need to convert to ...... # **` |
| | My logic for run background music when click button. b.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e) { ContinuousAudioDataStream loop=null; AudioPlayer mgp=AudioPlayer.player; try{ AudioStream bgm=new AudioStream(new FileInputStream("C:/Users/Public/Music/Sample Music/Sleep Away.mp3")); AudioData md=bgm.getData(); loop=new ContinuousAudioDataStream(md); } catch(IOException ex){ } mgp.start(loop); loop=null; } }); Hello EveryOne, I am new to Java and creating a small …  |
| | I am writing a java netbeans platform application that alerts end users when certain dates, conditions are met, etc... So I want to give the option when the end user installs the program of whether or not the program starts when they log into the computer or not. I also … |
 | Hello!!! mmm am learning OOP in Java ... and now I'm facing a prob in reading/writing .txt file here's my code: import java.util.Scanner; import java.util.Formatter; import java.io.File; import java.io.FileNotFoundException; public class Tester { public static void main(String[] args) { Scanner scan = null; Formatter formatter = null; File fileI; File … |
| | Hi, I am currently working on a script that will compare two numbers from a file. I am thinking that I need to use a regular expression in order to get the numbers, however I don't know what the regex would be since there are multiple numbers through out the … |
| | Hi all - I am having a little trouble getting going on the methods for this assignment. I need to use a method which passes a Scanner as the object to create an array that is the correct size, but has null values. It reads in a file which contains … |
| | For part of my project, I need to write a piece of code that will perform a task (beeping) once per second for ten seconds. I found this code online and tried to modify it to fit my needs, but I couldn't seem to get it. This code doesn't beep, … |
 | 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 … |
| | I wrote this program, when i run it, everything seems to work ok, but in the eclipse console i get a long list of errors, what is wrong with my program and how should i fix it? thanks import java.applet.Applet; import java.awt.Color; import java.awt.Graphics; import java.awt.List; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; … |
| | 1. need to read details of customer in a Account class 2. need to inheritence Account class to define a method for fixed deposit & saving deposit in main class i have to just call all this class pls help .... |
 | Thanks in advance Shanti |
| | Hi, what is the best way to provide followings? 1) Server Client sides 2) File serving by client request 3) Streaming by segments with iteration sample code also please. |
 | What is a flag in java? when do we need it in our program? what it is used for? |
 | Thanks for the support! I have been working on a program with 7 classes, one the main and one starts the program, and I have been troubleshooting for a few hours trying to see why for one of the output constructors I'm not getting the classes to update the output. … |
| | note i want to do this code in background class. not in main class. so i have a main class and a background class. getting error at url = getDocumentBase(); also getting error at getImage drawImage background class import java.awt.Color; import java.awt.Graphics; import java.awt.Image; import java.awt.Rectangle; import java.net.URL; //#2 public … |
 | import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Bank1 extends JFrame { private JLabel l1; private JLabel l2; private JTextField t1; private JPasswordField p1; private JButton b1; public Bank1() { super("Bank System"); Container container = getContentPane(); container.setLayout(new FlowLayout()); l1=new JLabel(" ID :- "); container.add(l1); t1=new JTextField(25); container.add(t1); l2=new JLabel(" Password … |
| | Like me you may be curious about the "closures" or "lambda expressions" that were supposed to be in Java 7 and are now the centre-piece of Java 8 (due next year). Also like me you may have Googled for some info, and discovered a smattering of technical articles explaining the … |
| | i need help finish this program for an assignment, It should play the Rock, Paper, Scissors game. The nextPlay methoded needs to be filled in with nested switches. thanks for your help import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Rps extends JFrame implements ActionListener { private final char moves[] … |
| | note x = player x postion y = player y postion so iam trying to set up collsion between player and enemy. i want it so my player touch the enemy than my player should stop. and not go though it. this code below kind of works. if my player … |
| | I was trying to building a java project with a run function. Problem is, the build file is located at the base directory and file with the main method is in the /contents/username/ subdirectory - I can't seem to properly call the file even though when I run Ant compile, … |
| | I have two classes: (1) **Class A**, which extends JApplet, implements Runnable + some Listener stuff (2) **Class B**, which has a main method and is not an applet My question is, how do I create **class A** with **class B**'s main method? Is this even possible? What I'm doing … |
| | Hi, Jim and All, How do you handle a java applet in a webbrowser control? It seems that no event fires up when a java applet is loaded in webbrowser control, by the way, the applet is in full screen and this is a company applet, meaning I did not … |
| | **I am doing a mini project, I need help with how I can store the scores in an array. ** import javax.swing.*; // import the swing library for I/O class fi_project { public static void main (String[] param) { questionfilm(); System.exit(0); } // END main //************************************************************ public static void questionfilm() … |
| | Today , i came across this code class Something { public static void main(String[] args) { try { System.out.println("In try block"); return ; } catch(Exception e){ System.out.println("Hello World in catch!"); } finally { System.out.println("Hello World in finally!"); } } } Now can anyone tell me the output with reason plz... … |
| | The instructions are long but here goes. The starting code they provided me is after the instructions. The bar codes used on products in a store are visual encodings of Universal Product Code (UPC) numbers. For example, 036000291452 is a UPC code (in this case for a box of tissues). … |
| | ok here's what i am trying to do. i ask user for a value or just assign a value my self for example int a=150; now i want the output like this: 1 5 0 so is this possible?? please use simple programming i guess it can be done with … |
| | public class j_01_FLOW_06 extends JApplet implements ActionListener { //Choice shoplist = new Choice(); //ButtonGroup bg_group = new ButtonGroup(); CheckboxGroup cg_group = new CheckboxGroup(); JCheckBox cb_i1 = new JCheckBox("fafa"); JCheckBox cb_2 = new JCheckBox("wfw"); JCheckBox cb_3 = new JCheckBox("Computer"); String s_value[]={"white sox","red sox","mets","cordianls","blue jays"}; JList l_list = new JList(s_value); Container c; … |
| | public class J_01_FLOW_08 extends JApplet implements ActionListener { String s_value[]={"white sox","red sox","mets","cordianls","blue jays"}; JList l_list = new JList(s_value); JLabel l_label = new JLabel(); Container c; FlowLayout flow = new FlowLayout(); public void init() { c = getContentPane(); c.setLayout(flow); c.add(l_list); c.add(b); l_list.addActionListener(this); } public void actionPerformed(ActionEvent e) { String pick = … |
| | so i now awt is the old version. which is Applet swing is the new version which is JApplet. code at bottom, is it normal to mix awt and swing? for ex i am using continer which is awt. and let say i dont want to mix awt with swing … |
| | Hi, I am making a program to open the application TextEdit on a mac (not a specific file, just open the program). I have been researching it, but have not come across much help. I have seen that I should use Runtime or Desktop classes, but i'm not sure which … |
| | protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); PrintWriter out = response.getWriter(); try { int c=0; String u1=request.getParameter("u1"); String e1=request.getParameter("e1"); String user=request.getParameter("user1"); request.setAttribute("u1",u1); request.setAttribute("e1",e1); request.setAttribute("user", user); out.println("welcOme"); Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); Connection con =DriverManager.getConnection("Jdbc:Odbc:db5"); String str = "select * from Table1 where email=?"; out.println("welcOme"); PreparedStatement statement = con.prepareStatement(str); statement.setString(1,user); ResultSet … |
| | hello, i am corrently making a desktop application which store the username and passwords from different account. now,i want to know that how can i fill this username and password in particular web site when i click on button. i have written the code for opening the web browser,when i … |
| | Hi all, I was looking to make an android app that gets data from a C# wcf server - at the minute I can pull some basic data and they are communicating - however what is the best way to create an app like this? I know that networking operations …  |
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