36,051 Topics
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| | I am using NetBeans and I have the MySQL server with SQL db running on my computer. I have a desktop app with embedded db. I would like to find some good info on how to add button functionality to initiate another desktop app. I would like to explore possibilities … |
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| | import java.util.*; import java.lang.*; import java.io.*; class EncodeThePhase { public static void main (String[] args) { //set up keyboard input Scanner scan = new Scanner(System.in); //Ask for string from keyboard System.out.println("Please input your phase:"); String input = scan.nextLine(); //Ask for an offset number System.out.println("Please input your offset integer:"); int x …  |
| | The "Invalid Property" Error is thrown at Line 20, which is for the TextField. No idea as to why it is being thrown. <?xml version="1.0" encoding="UTF-8"?> <?import java.lang.*?> <?import javafx.scene.control.*?> <?import javafx.scene.layout.*?> <?import javafx.scene.text.*?> <VBox prefHeight="400.0" prefWidth="284.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1"> <children> <AnchorPane maxHeight="-1.0" maxWidth="-1.0" prefHeight="375.0" prefWidth="285.0" VBox.vgrow="ALWAYS"> <children><Button fx:id="zero" layoutX="14.0" layoutY="321.0" … |
| | ` Hey can u solve my prob. I was running an Applet program(.html file) with java Browser but it showing error = "your security settings have blocked a local application from running" So can u say ... which application is this |
| | I need to print out the titles for family members being stored in an array, but I am having issues with the report. It prints out all the stored names, instead of the ones that belong to each family member and one line for each. I'm new with arrays so, … |
| | Alright, so I have seen `<<` and `>>` in a few different Java Programs and I have an idea of what they do, but I have no idea what you would use them for. I haven't ran into a problem where I need to use them, so if someone could … |
 | Hi all, If we implementing an interface then is that should be inheritance? Kindly any one clarify my doubt  |
| | I'm trying to find all the prime factors of an inputted number. I was given the following Java code to convert to assembly. String getFactors(int number) { String answer = ""; for(int factor=2; factor <= number; factor++) { if(number % factor == 0) { answer += factor + "*"; number …  |
| | Create a class called PrintStars. In the main method, use nested-for loops to print 2 diagonal lines of stars accross a 9x9 grid.  |
| | I am new to java programming and I just created a simple program that connects to a mysql database to update a Jtable right on my laptop. Now I want to install the program on my friends laptop and we want to share the same database. Do I have to … |
| | Hi, I have got a doubt In String. String objects are Immutable and StringBulider/StringBuffer objects are mutable. Almost we can do all the String functionality in StringBulider. Then why we need to use String instead of String builder/StringBuffer. Is there any specific reason available for using String? kindly clarify my … |
| | hi all, As of my understanding hash set will not allow duplicates. But when I add two different object of same class with same value it is accepting, at the same time same object with different values are not accepting.Kindly clarify me Senario-1 TestBean testBean = new TestBean(); testBean.setId(1); testBean.setId(100); … |
| | In Jsp page, on selecting a table name, I need to display all columns associated with the table in a drpdownlist with checkboxes.can anyone plz provide code for that?.  |
| | Rather learning C++ and Java. |
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| | Hi there, I am taking a html/java script class and I am completely lost. Can anyone help? Here is what my assignment is: Create an HTML file with Javascript to do the following Have text boxes for the user to enter 2 numbers Have a button so that when clicked …  |
| | Hello everyone, I'm not sure whether this post belongs here. The thing is that I want to do a Page reload from my java code running on the server. After pressing a button, I wish for the page to do an automatic reload. So, inside the class file, I have … |
| | Hi there, Im currently designing a Dots and Boxes Game and ive run into a snag,where my Minimax Algorithm will go 4-1 against the AI but not make the next move to win.Any help with this would be great package players; import interfaces.GameState; import java.util.List; import data.Line; public class MiniMax … |
| | I need help with this problem, if someone can help me with this it would be appreciated. Part 1: Write a program that uses a while loop to loop 5 times. Each time it should prompt the user to input an integer and should add it onto a sum. After … |
 | I know I asked this before, so I appologize but I just need to write this program for an extra credit assignment and frankly I don't know a thing about arrays and don't have time to learn since I have another final coming up so if anyone could be so … |
| | I need to create a 2D array that holds the number of family members by the highest numbe of titles of one of the family members, and they input on one line. However, I am having trouble when I call the class in my other code in the main method. … |
| | Just like the title says, could you give me arguments for it?  |
 | hi thier i was wondering if you guys could hep me when i press equall it calculates but when i press equall again it adds the first number added, for example if i was to enter 3 + 2 = 5 if i press enter again it equalls to 8 … |
| | Hi there im trying to create a Minimax player in AI for dots and boxes Following this algorithm Max-Value(state) returns a utility value if Terminal-Test(state) then return Utility(state) v ← MinimalGameValue for s in Successors(state) do v ← Max(v, MinValue(s)) return v Min-Value(state) returns a utility value if Terminal-Test(state) then … |
| | Hi, I have follen behind on my inventory program. If I send what I have, can someone please help me finish it? I am on part 4 but part 3 is not finished as I am lost.  |
 | Ok, I hope this is the right place for his kind of disccusion. I assume that this kind of question is rather apsurd but I may get killed for this. I have had expirience with both java and c++ but non in field of system programming. I am finishing my …  |
| | i had created a java application that has netbean frame work , but now am not able to run its exe file on other computeer then mine , its showing main class not fine error . can anyone help me in creating manifest file for the same |
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| | I am working on PHP Framework now.I am 23 old . I will have 2 years of experience by 2016.And Company Bond will be over ,and i will be able to leave the company. I worked on cakePHP,Wordpress,WHMCS,Smarty etc.and will work on other PHP Technologies by 2016. I want to … |
| | Hi guys , please look here . Consider code segment String a=new String("SMS Message"); String b=new String("SMS Message"); if(a==b) System.out.println("they are equal"); i) why it does not generate an output ? ii) how can we rewrite the program such that it will print the output ? |
 | Hello Everyone, I am trying to achieve pagination using jsp javascript and servlets. Here is my code below: SearchUserViews.java `package TestPackage; /** * * @author Sagar */ private String _userid; private String _firstName; private String _lastName; private String _emailAddress; public userProfile(){ _userid = ""; _firstName = ""; _lastName = ""; … |
 | I'm trying to create a sorted linked list without using Collections. I don't want to use Collections since I'd like to learn how to work with Linked List manually. I'm getting NullPointer exception when I'm comparing strings and comparison <0. Any suggestions and help are appreciated. This is the part … |
| | Hi guys i am using sax to extract data from an xml file but i can't seem to discover how to extract <![CDATA[%s]]> from the xml below is the xml and the java code //java codepublic class XmlParser { public XmlParser(String xml) { try { SAXParserFactory factory = SAXParserFactory.newInstance(); SAXParser … |
| | Hello guys, I created two database in derby: DB1 with one table Customers and its columns id,name,last And DB2 with one table Purchases anf its colums CustID, total I would like to makes queries from data in both of these database. I tried SELECT C.name, C.last, U.Total FROM DB1.Customers C … |
| | consider the following code segment String a="hello"; String b= "hello"; if (a==b) System.out.println("they are equal"); i ) Why does it not generate output? ii)How can we rewrite the program such that it will print the output?  |
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| | what is the notion of event driven architecture in context of GUI ? |
| | "a menu must be provided that asks the user of the software what task they would like to perform; it then activates the required task. The menu should loop until the user requests to exit"- that is the requirement. And i haven't learn about switch-case. So how can i create … |
| | Hi guys , I dont have idea on how to solve this problem . I attach my question but I dont know whether it is true or not. Can you please help me Given an output file named "data.txt" write the code fragment to i ) set up the file … |
| | Hi and good day to all, Just a curious question, when I am comparing a String object with blank space(" "), I type x.equals(" ") in my Netbeans IDE(x is a String type variable), but Netbeans automatically shows it's an error and change it to " ".equals(x) instead. Anyone here … |
| | import javax.swing.JOptionPane; public class StudentReport { String name; //name of the student String schoolName; //name of the school String schoolGrade; //grade in school int numOfGrades; //number of grades or number of classes double grades; //grades received double average; //average of the grades double total=0; //initialize total String trash; //to convert … |
| | hello, i am in need of some help with a bit of code i been working on. i am getting "illegal start of expression" and "reached end of file while parsing" errors and its been bugging me for awhile as i am not sure why. can anyone help me to … |
| | I'm implementing a generi method that's supposed to traverse a binary tree in PostOrder but when I attempt to use it, the Iterator doesn't work as It should when I attempt to use ot on a Binary Tree, can anyone spot my mistake in the code? Thanks. The method makes … |
| | import javax.media.*; import java.io.*; public class MP3Player { public static void main(String[] args) throws Exception { File file = new File("xyz.mp3"); MediaLocator mrl = new MediaLocator(file.toURL()); Player player = Manager.createPlayer(mrl); player.start(); } } }`` when i execute above program, it shows error : Failed to configure: com.sun.media.PlaybackEngine@ce124a7 Bad header in … |
| | How would I write this program: Wrte a program that will read a line of text that ends witha period, which serves as a sentinal value. Display all the letters that occur in the text, one per line and in alphabetical order, along with the number of times each letter … |
| | I'm trying to show data from mysql database in JSF, but getting error: javax.servlet.ServletException: /index.xhtml @16,70 value="#{userBean.getUserList()}": The class 'com.dev.UserBean' does not have the property 'getUserList'. javax.faces.webapp.FacesServlet.service(FacesServlet.java:325) I'm using http://www.devmanuals.com/tutorials/java/jsf/database/viewdata.html tutorial UserBean.java package com.dev; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.util.ArrayList; import java.util.List; import javax.faces.bean.ManagedBean; import javax.faces.bean.SessionScoped; … |
| | Please help me I cant answers these questions at all . Question b Suppose a class named FootballClub is to be definêd. i. Suggest THREE (3) data members for the class' ii. suggest TWO methods other than accessors and mutators for the class' iii. code the class in Java based … |
 | public class NumFormat { public static void main (String [] args ){ int quarter = 2; int dollars = 3; double total = dollars + quarter * 0.25; final double TAX_RATE = 8.5; double tax = total * TAX_RATE ; NumberFormat formatter = NumberFormat.getNumberInstance (); formatter.setMaximumFractionDigits (2); System.out.println ("Totali:$" + … |
 | how to search in double linked list in java ? |
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