36,051 Topics
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| | I am new to Java and am experimenting with the language. I am looking a way to convert a user-inputted date and convert it to the MSexcel format. So 1998/07/05 is 35981. Any clue on how to do this? This is what I have so far import java.util.*; import java.text.*; … |
| | My question is that what is ".in" in system.in and i am not understandin the workin of System.in suppose Scanner obj=new Scanner(System.in); plz understand me the working of upper line.  |
| | I've got all my parts to inventory part 5 to compile successfully but when I go to run the program I get this message, I am unsure what to do. I know that it possibly means something to do with the image. I've checked the errors that came back and …  |
 | I am looking for alternatives to setup a server in work place which does not allow to setup new software to computers to check and reserve rooms for meetings both through local network computers or possible from home / on the move. I of course would like to have thy … |
| | I opened a website business but i am programming at jsf mostly for big sites. Is there any good JAVA VPS or virtual Java server that i can buy because now i can not buy a server and set it up. Do you know any good one that i can …  |
| | I have a lookup table that contains 2 columns k_id, keywords as follow k_id | keywords 1 | hi 2 | play and so on I want to create another table using the previous lookup table where I want to put the k_id values as the columns of the other … |
 | Okay, so I have the following while(!connected){ if (details){ System.out.println("connected"); defaultHost = tfServer.getText(); defaultPort = Integer.parseInt(tfPort.getText()); program.run(); } System.out.println("Not connected"); } where details is true when a button is clicked. This works fine expect that my console is getting spammed by "Not connected" until I press the button and details … |
| | So, I've been making a gui for a client to connect to a server using it. What I want is when I press Login to connect with the specfied Server address and port name on the gui. If I have hardcoded the Server and port it works but I don't … |
| | JMenuItem mntmLoad = new JMenuItem("Load"); mntmLoad.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { JFileChooser chooser = new JFileChooser(); chooser.setMultiSelectionEnabled(true); int option = chooser.showOpenDialog(testgui.this); if (option == JFileChooser.APPROVE_OPTION) { File[] sf = chooser.getSelectedFiles(); String filelist = "nothing"; if (sf.length > 0) filelist = sf[0].getName(); for (int i = 1; i < … |
 | in below code , how can remove -1-1-1 ... in output this code a want output is equall 5 4 3 2 1 0 6 7 public class Homework3 { /** * smoosh() takes an array of ints. On completion the array contains the * same numbers, but wherever the … |
| | encryption is one of the thing through which we can hide our file folder or anything else now we wanted that to encrypt a folder usin aes algorithm i have compressed the file how to encrypt file or folder  |
 | I am using upload services and i have to use a request over http due to which IE gives me "Mixed Content" popup. My client do not want this. Is there any way to hide or handle it through java script or in Jquerry or C#? Additional Info: Web Application … |
| | Actually I have two questions 1) Why we not create Object with simple mathod like [(class name) (object name;)] in java 2) Why we use Constructor to create object code below class Run{} Run obj=new Run() why not use this code Run obj=new Run; Please relese my confusion |
| | I want the program to only allow integers at certain points. The code works but I have to enter a value twice then it skips a part of my code. My code is ` case 1: char ans; do{ Event event = new Event(); out.println("Please Enter the name of event"); …  |
 | Hello, since I have realised how little I have understood of the GridBagLayout, I thought I'd open a thread where I could clarify one by one all my doubts. I have produced a very small and simple GUI which I will use to test the GridBagLayout and ask questions as … |
| | Hello, I am new to android development and this is my first time using eclipse so sorry if this question sounds silly. I have created an android application called IFMApp. I have four xml pages and 4 java classes. My application, is cleaning and building fine and will install to … |
| | Hey there guys, I want to make a program that will track the number of times I have clicked a button. Thing is, I want this to write the information down and load it every time, so it doesn't start at 0 every time you start the program. How would … |
| | Hello! I'm new to programming and I'm trying to do a basic hotel application using threads in java. Here is what i've already done: //room class public class Room { private int idRoom; private int etaj; private boolean empty; public Room() { this.idRoom = 0; this.etaj = 0; this.empty = … |
| | I am considering learning some server side stuff with java, however I am getting mixed views and opinions when searching. I read a benchmark that claims java has superior performance than most alternatives, and I was considering taking a look at grizzly or spring, but I really don't know too …  |
| | I am a junior Java programmer trying to improve my knowledge in servlets. I have some experience in C++, PHP and SQL but mainly in small projects. It's nice to meet you guys.  |
| | Dear Experts When we create table in MS Access we enter description of field in description column. I am able to get the field name and data type from the table but how can I get the description from the table. Here is the code by which I am getting … |
 | Hi, I have linux based hosting. I need to upload and work the jsp/servlet pages. after i uploaded the files into the hosting, when i checked the files , it shows the code itslef. How to fix this. Please help me. Thanks in advance. |
| | Hi techies, I am new to webservices. The issue is regarding a SOAP request. The request contains a comment which has the charechter as "&" example., the comment is: You & me & is getting converted to "&" in the receiver side. We tried getting the SOAP request (from our … |
| | Guys, I need your help to finish up my assignment. I have JSP application naming myProject ,which has been deployed in webapp folder in tomcat. I want to provide security for myProject folder. I mean, I want to protect it from copying by someone else. Is there any way to … |
| | Please, i need a thorough tutorials on METHODS AND HOW TO CALL THEM. I also need some elinghtenment on classes in java. I want to really understand this concepts in java. |
| | for(int i = 0; i < program.size(); i++) if(program.get(i).contains(remp)) with the coding above, i can search and display all string in my arraylist that contains "hit2080". for example HIT2080___Introduction to Programming___ALL___Core___NULL___NULL HIT1307___Internet Technologies___ALL___Core___NULL___HIT2080 but i just want to search and display the first token that contains string "hit2080". Is there … |
| | how do you display image from a access database into a jtable in java |
| | I know with Lists you can instantiate them to an ArrayList, but is this generally a good idea? Is it better to do 'List<?> list = new ArrayList<?>();' rather then 'ArrayList<?> aList = new ArrayList<?>();'? |
| | I know you can create nested classed (or just classes declared outside of the class in the same file) but what is the point of doing this? Why not just create a new class file? |
| | I am linking to a webservice all works fine. Below is my codes. private static void printSOAPResponse(SOAPMessage soapResponse) throws Exception { TransformerFactory transformerFactory = TransformerFactory.newInstance(); Transformer transformer = transformerFactory.newTransformer(); Source sourceContent = soapResponse.getSOAPPart().getContent(); System.out.print("\nResponse SOAP Message = \n"); StreamResult result = new StreamResult(System.out); transformer.transform(sourceContent, result); } I am not too …  |
| | You have been hired by an amusement park company to write a JAVA program that prompts a Person to enter their age and height and to find out if they are eligible to ride. A person is eligible to ride if their age is above 9 years and their height … |
| | I dont know is it usful? Its now Oracle , not SUN ,please tell me whether this book wil be helpful for exam?Thanks! |
| | I tried dreamincode but the mods there all seem to be on their periods tonight so i have come here to humbly beg for help. First off let me start by saying I'm a new programmer and I am frustrated and cofused by the class i'm in prg 420. I … |
| | # I am using: # -- Libgdx and Box2d. ------------- # what I am trying to do: # -- I want enemy to move right and left. if enemy hits the wall than move the over way. ---- # My plan: # -- I have two senors set up on … |
| | //My objective of the program is using scanner class to get the input from the user and use a dialog box(JOptionPane) for output. When I compile the file I was able to enter the input from the scanner class, but I did not see the dialog box for the output … |
| | //When ever I add TextFields the frame disappears.line 73-76,108-111; import javax.swing.*; import java.awt.*; import java.awt.event.*; public class fitness extends JFrame { private double height=13.5; private double weight=45.3; private int age=20; private String sex="Male"; public fitness(int x){ this.age=x; } public fitness (double wei,double hei){ this.weight=wei; this.height=hei; } public fitness (double height,double … |
| | Hello developers, i have got a problem that i have been trying to solve all day and would be glad if anyone here can help. I have a Java port scanning application which scans for open ports and displays the results in a textarea called "taOutput" when the user clicks …  |
| | Hi All, Really, I need your help to create phonebook application with MVC. in which the application contains a contacts database. also the application should contain a login screen to delete or edit contact information. the links of update and delete a contact record should appear at the end of … |
| | hey, i have stored a few images in mySQL database as BLOB.Now i want to retrieve and display the images on frame as a gallery/grid view.I have displayed one image in a frame but when i tried to add more images it fails...Can anyone help with sample code,coz im new … |
| | I have text file that has multiple x and y coordinates. I'm reding them in and trying to send them to drawrect. The problem I'm having is that the drawRect will only draw the last x and y that is read in here is how I'm reading in. for (int … |
| | how do I make a pictur move?.code: public class picture extends JFrame{ private static final long serialVersionUID = 1L; JLabel ball; int h = 100; int l = 200; public picture() { System.out.println("working"); Icon bb = new ImageIcon(getClass().getResource("ball.jpg")); ball = new JLabel(bb); ball.setBounds(10, 10, h, l); ball.addKeyListener(new KeyListener() { public … |
| | To my Inventory Program Part 4 there are three parts and I was able to compile successfully with the first two. I end up get several errors with part 3 and I am unsure to why. This is what I have. import javax.swing.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.FlowLayout; import … |
| | Hi, What is the main aim of the callable statement? How it is differ from prepared statement? |
 | Hi All, I'm running through "Head First Java" and I'm hitting a snag with an exercise involving RMI. My Classes ---- package myremoteimpl; import java.rmi.*; import java.rmi.server.*; /** * * @author Michael */ public class MyRemoteImpl extends UnicastRemoteObject implements MyRemote { public String sayHello() { return "Server says, 'Hey'"; } … |
| | CharToString.java: Declare a character variable (char ch). Read a character into the variable ch and then store it in a String variable using the valueOf method. Print out both the char and string value at the end to test your program. (Note that the valueOf method is static... this means … |
| | [CODE]Hi every one, hope u r fine. i have a java program and it call matlab exe file ,but i have a problem in run time it is so so slow . i need a help in how to make this faster, i will be grateful for any help Hint: … |
| | Hi guys I've written a very simple program that reads in some files, does some cleanup on the data and then creates a sql statement to insert the data into a table. Now I have 125 of these fies of varying sizes and on some (not all) of the files … |
| | I wanted to know how i can print the purhcase that the user got. Thank you. import java.util.Scanner; public class VendingMachine { private double chips; private double cookies; private double soda; private double gum; private double candy; private double energyDrink; private Scanner kb; private int dollar; private int quarters; private … |
| | 1) What are three ways of creating a String object ? 2) What is the difference between string concat method and simply adding 2 strings ? |
| | Hi all, What is the difference in inheriting a class and instantiating a class, as both allows to inherit properties from the base class.I know there is a difference in both, but i want a clear idea on this. Kindly, can anyone help.Thanks in advance. |
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