36,051 Topics
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| | So ive been trying to get an average of this array needed, and I seem to be having trouble with it. So far, my current code just adds the numbers up, but doesnt really average them out at all: [CODE]import java.util.Scanner; import java.util.Arrays; public class Grades { public static void …  |
| | import java.util.Scanner; public class EventFrequency { /** * main method: * ask the user for the average number of events per time interval * (lambda) and the number of time intervals to observe * draw a horizontal and vertical histogram of the number of heads */ public static void main(String[] … |
| | This was the assignment: Write a class with methods to help you balance your checking account(an object class-main method is not in this class). The CheckingAccount Class should have at least two instance variables: the balance and the total service charges, along with methods to get and set each instance … |
| | Hi Why am i getting error i the below code. abstract class SuperHeroes { abstract void perform(); } class IronMan extends SuperHeroes{ String action="Blowing bubbles"; IronMan(String action){ this.action = action; } void perform(){System.out.printIn(this.action); } } |
| | I'm making a connect 4 like game in Java and everything I choose a column to drop the piece it goes where I want it to however, when I want to drop a piece on top of that I, my program throws an error and makes me select another move. … |
| | Hello, I was looking for a way to post multipart/form data to a servlet using java standalone application. Any information would be helpful. |
| | Hi, I have to write a recursive method to count the number of user entered even integers in an array (the array size is up to 100). Here's what I have.... public static int countEven (int numbers[], int startIndex, int endIndex) { if(startIndex==endIndex) if (numbers[startIndex]%2 == 0) return 1; else …  |
| | In one class i have a back button(java Swing)...i want when i click this button it will go to another class and close the current class...however, when i use System.exit(0)...it closes both 2 class...if i use setVisible(false) for the current class...that class still running...how can i close the current and …  |
| | Hi everybody! I made an applet, and was trying to put it in web page. When I run my applet by itself it works fine, but when I'm trying to run it thrue the web page it doesn't work at all. I mean I have just grey box (like a … |
| | package com.batch; import java.sql.*; import java.text.SimpleDateFormat; import java.util.ArrayList; import DBConnection.DBConnect; public class Batch { @SuppressWarnings({ "unchecked", "rawtypes" }) public ArrayList BatchAction(String ik) { Connection conn = null; Statement st1 = null; Statement st2 = null; ResultSet rs1 = null; ResultSet rs2 = null; ArrayList al = new ArrayList(); conn = … |
 | Hi friends, i was recently started writing a program on java needed for my practicals but as i started i found an error which deletes last element of queue actually i want to delete first element of queue anybody can solve it import java.util.*; class VQueue { int size; int … |
| | I'm trying to connect a DB from Postgres with a program in Java. I'm including this code: Class.forName(driver); Connection con = DriverManager.getConnection(connectString, user , password); Statement stmt = con.createStatement(); ResultSet rs = stmt.executeQuery("SELECT * FROM students"); But I'm getting this erros in Statemen and stmt.excuteQuery: With Statement: *incompatible types. Required: … |
| | Hi below is an example.I want to know,what does one mean by, 1.create a new class that extends SuperHeroes. 2.have a non static field named: action. thank you. abstract class SuperHeroes { abstract void perform(); } class Thor extends SuperHeroes { void perform() { System.out.println("*Snap your neck with his hammer*"); … |
| | Hi every body My teacher assinged us a lab to draw a 200 X 200 square at the top-left corner and the right bottom corner of the monitor then continue drawing squares that become steadily smaller as they are displayed to right side and left side of each preceding square. … |
| | I am trying to assign some values to static class and it does not work as I expected. I was expecting to see different values for different classes. However, they fall into the same value because it is static??? See code snippet here: NewOperationResponseSimpleType[] resp=new NewOperationResponseSimpleType[3]; NewOperationResponseSimpleType[] res1=new NewOperationResponseSimpleType[3]; NewOperationResponseSimpleType[] … |
| | hello everybody first of all thanks to Daniweb and all its users for helping me lot of time. now come to the problem I've just started studying servlets 1 week back it was going well but i got one problrm when i try to run a packaged servlet code. path …  |
| | Hello everyone, I am looking for some assitance with an assignment that requires a user to input tutor time and earnings into a gui and then calculate the totals and averages in a text area. I have succeeded in getting the program to work, however it is totaling the user … |
 | I am trying to create an oval shape using Netbeans but the oval shape never draws itself. Here is the code : /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package learn; import java.awt.Color; import java.awt.Graphics; import javax.swing.JPanel; /** … |
| | I have these 2 classes: [CODE]import javax.swing.JOptionPane; public class Theatre2D { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub // declares an array of integers int[][] myTheatre2D; // allocates memory for 2*10 integers myTheatre2D = new int[2][10]; myTheatre2D[0][0] = 20; myTheatre2D[0][1] = … |
| | Hey all, I have been busy building my own chess game and as of now im a bit stomped. Well you see i have an object Board, this object will be initiated and it will create a new frame with various panels one of them being the panel which holds …  |
| | hi all, I have doubt in my project,I have created Login page using MVC, If user name and password correct then LoginServlet navigates **user.jsp** page which has has user name ,latest events,andd other user informations, In user.jsp i have one link for **editsettings.jsp** which helps to edit user details,after edit … |
| | i want to know how to add put images or array of image (icon) in a JList any helpp . |
| | hello Folks, I would really appreciate if I could get some help on this. I have an Integer lets say number = 12345 I want to get a string out which is 12,345 so basically puts a commas after every three digits... the number of digits in the number can … |
| | I have a programming question that calls for me to write a program that concatenates the contents of several files into one file. For example, java CatFiles chapter1.txt chapter2.txt chapter3.txt book.txt makes a long file, book.txt, that contains the contents of the files chapter1.txt, chapter2.txt, and chapter3.txt. The output file … |
| | I'm working on a program that calls for me to write a program that opens a binary file and prints all ASCII characters from that file, that is, all bytes with values between 32 and 126. Print a new line after every 64 characters. Here is a sample program run: … |
| | Hi, I am vishnu kumar. I knew the basics of Java but this is the first time i am building a project based on java (Java Swing actually). This is my final semester project and for last two months, i am doing my project. I initially thought the database(along with … |
| | Write a program that rolls a dice (but hide the number from player) and then ask user enter a number in range of 1 - 6. If player enters same number of computer rolled, then the player earns $10. If player enters a number that is smaller or larger by …  |
| | I have an assignment that calls for me to Write a program Find that searches all files specified on the command line and prints out all lines containing a keyword. For example, if you call java Find ring report.txt address.txt Homework.java then the program might print report.txt: has broken up … |
| | I need to find a word in JTextArea and highlight it, can you help me with this code? [CODE]class managerClass implements ActionListener { @Override public void actionPerformed(ActionEvent e) { String myWord = txt.getText(); Highlighter h = textArea.getHighlighter(); if (e.getSource() == bFind) { pattern = Pattern.compile("\\b"+myWord+"\\b"); Matcher matcher = pattern.matcher(myWord); while( …  |
| | Hi Friends, I need to some help in connecting to webserver using c shell or tcl scripting in linux ie in my office in linux system we have some intranet which is run by tomcat server so i need to connect to that server and read some data existing in …  |
| | Hello, I have created a game in java and I would like to insert enemies. For now I placed them on plaftforms that I made invisible. How can I have the enemy on its own? |
| | guys, I need help in swing framework... what method is being used when you have to pressed exit button first before opening other frames? It's like an equivalent of showDialog() from C#.net. |
| | here i have code it work well here i have assigned size of the row and column. how can i get the row and column value from text file.[CODE]import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.io.IOException; import java.util.StringTokenizer; public class csvimport5 { public static void main(String[] args) throws IOException { … |
| | Hi Sorry i was doing a little program and i need helps i would like to something similar to that [url]http://i42.tinypic.com/2mys23d.png[/url] this is my code so far [code] private void makeFrame() { frame = new JFrame("Jubilee Estate Agency Property"); makeMenuBar(frame); Container contentPane = frame.getContentPane(); JLabel label = new JLabel(); contentPane.add(label); … |
| | I receive error at camera.Camera.<init>(Camera.java:19) at camera.Camera.init(Camera.java:32) at camera.Camera.<init>(Camera.java:21) at camera.Camera.init(Camera.java:32) at camera.Camera.<init>(Camera.java:21) at camera.Camera.init(Camera.java:32) at camera.Camera.<init>(Camera.java:21) at camera.Camera.init(Camera.jav and continues. Please help, last day [CODE]package camera; import javax.swing.*; import java.awt.event.*; import java.awt.event.ActionListener; /** * * @author FDR */ public final class Camera extends JFrame{ private JTextArea txt; private Camera … |
| | Can you help me with this code, I need to find a word, but it only finds first word, how to find multiple words? [CODE]lass managerClass implements ActionListener { @Override public void actionPerformed(ActionEvent e) { String myWord = txt.getText(); Highlighter h = textArea.getHighlighter(); String searchArea = textArea.getText(); if (e.getSource() == … |
| | Hi, We are developing a software in j2ee/jboss appserver. I have designed a login page the source code of which is given below, loginpage.jsp <%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <title>index of third eye</title> <link rel="stylesheet" href="stylepage.css"> <meta http-equiv="Content-Type" content="text/html; … |
| | Given a UML diagram of: Oval ------- ------- +draw (g:Graphics, x:int, y:int) +toString(): String I have currently [CODE]import javax.swing.*; import java.awt.*; import java.awt.event.*; public class Oval extends Shape { public Oval (Color color, boolean isFilled, int width) { super (color, isFilled, width); } public void draw (Graphics g, int x, … |
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| | so heres my code [CODE] import java.awt.*; import java.text.*; import java.util.*; import java.util.List; // Explicit import required import javax.swing.*; public class Sort { public static void main(String args[]) { Runnable runner = new Runnable() { public void run() { String words[] = {"Sean", "Beth", "Ryan", "Bree", "Jim", "Bob"}; List list … |
| | [I]This exercise will explore the queue and stack data structure implemented with linked lists. The Koch snowflake can be implemented without recursion by using a queue or a stack. Assume that L is either a queue or a stack, L.add( seg ) adds a segment, and L.remove() removes the segment. … |
| | Hi everyone... i am currently doing a java system concerning file transfers between server and client... file transfer starts from the server.. So far, i have done one file transfer. However, i would like to program my code in such a way that the client actively still listens to the … |
| | Hello! I have two Hashmaps: [CODE]POINTS (String/int) Player A: 0 Player B: 3 Player C: 5 Player D: 2 Player E: 5 Player F: 3[/CODE] [CODE]TIME (sec) (String/int) Player A: 0 Player B: 15 Player C: 9 Player D: 8 Player E: 12 Player F: 15[/CODE] The progrom should first … |
| | good evening everyone, uhmm can someone here please help me how to get the internet history of a browser(gchrome, ffox, ie) using java.... thank you! ;) |
| | Hello All, I am a newbie on this forum. My name is Krunal. I am a beginner of JAVA and JSP. I would like to learn more and more from this forum. Thank you in advance. :):) |
| | OK, i'm working on a hangman game in cmd prompt. I'm about halfway done, but i have hit a wall regarding the secret word, and the user guess. Now mind you, my professor has not taught the class any array manipulation methods or techniques for finding specific char in an … |
 | Hi, I've got an error message on "public static void save_data" and "public static void retrieve_data". Please help, thanks [CODE] import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.io.*; public class face1 extends JFrame implements ActionListener { JPanel pm,menup,fp,f1p,f2p,f3p,f4p,f5p,pf_1,pf_2,pf_3,pf_4,pf_5; static String f1[] = new String[2]; static String f2[] = new String[2]; … |
| | Hello, I havr created a program in which there are two classes. One ship, and shooter. However it is not working. Any idea? [CODE] package shooter; import java.awt.Color; import java.awt.Graphics; import java.awt.Rectangle; import java.awt.event.KeyEvent; public class Ship implements Runnable { int x, y, xDirection; boolean shoot = false; boolean ready … |
| | Hi @all! I have a array with three numbers: num[0] = 5 num[1] = 2 num[2] = 5 I need to find out which of these numbers are the largest ones, it could be one, two or all of them, and need the index. Here for example "0 and 2". … |
| | I am new to programming. My code are listed below. [CODE]public abstract class Mark { private double mark; public double getMark() { return Mark; } public void setMark(double mark) { this.mark = mark; } public abstract void calculateMark(double x, double y, double z); }[/CODE] [CODE]public class Test extends Mark { … |
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