35,618 Topics
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| | According to JLS, the [grammer](http://docs.oracle.com/javase/specs/jls/se8/html/jls-14.html#jls-14.14.1) of basic for statement is for ( [ForInit] ; [Expression] ; [ForUpdate] ) Statement It's also said on the JLS that 'The Expression must have type boolean or Boolean , or a compile-time error occurs.' So to check if the syntax is valid, the parser …  |
 | # Heading Here # **Design and implement a simple web application that automates few of the management aspects for the business of your liking.** ## Sub-Heading Here ## Please follow the following pattern, as this is to demonstrate and capture your understanding on the subject matter. **Version 1** ➔ Use …  |
 | I am new to java programming and I have to write an inventory program that can hold multiple items. I have my code from week 1 but I do not know how to write in the ability to hold multiple inventory items. Can anyone help with this? |
| | Please help me to generate random in java without using library function  |
| | Give definition of two classes, Customer and Seller, whose objects are records for a Sale. Customer and seller will be derived from the Person class with member variable for Person’s name. A customer record has the customer’s name (inherited from the class Person) while a Seller object has a Seller’s … |
| | 'Ello I just completed my final individual assignment for my first java programming course. This is what I want to do and learning how to do it is what brought me to school. Unfortunately my class facilitator has decided that it is not in his best interest to contribute to … |
| | hello guys. I would like to ask you a help of how i can remote server and view files located on it using JTree in java. |
| | Based on types of riding bicycles can be classified into different categories such as Touring bike, Mountain bike, cruising bike and so on. Though there are different bicycles there are some properties shared among many of them, for instance each them has its own color, number of gears, brand. On …  |
| | Hi All, I would greatly appreciate considered recommendations on books pertaining to HTML5, CSS and Javascript, for starters, either as dedicated subject reference or in some combination. If a combintion of these subjects are addressed in a given book then additional subject matter (such as game applications, jQuery, mobile applications, …  |
 | Hi,programmers Need pdf book to learn java as 14 year old student...! My 5 months holidays are coming and i want an easy pdf book for learning java.Just give me easy book because i am completely new to java.And i dont need the words like 'dont rush into programming' or … |
 | My project is finished but lecturer demands everything in one file i created multiple to help ease everything and now cant combine them  |
| | I'm working on a server and client program. Data will be exchanged between the server and client. This data will be encrypted. The server will always generate the salt and the IV. The client will receive the salt and IV and use it to encrypt / decrypt the data that … |
| | I want to output the annual salary for each employee individually but I'm not sure how. The way it is now it just pops up as one large box. Any help is much appreciated :) public static void main(String[] args) { // TODO code application logic here String increase, Salary, …  |
| | I am using a JTabbedPane with three buttons. The program is running fine except that the buttons remains small even if you resize the window. Is there a way of setPrefferedSize for them? here is the code if it helps: public final class JTabbedPaneDemo { JFrame frame; JTabbedPane pane; JPanel … |
 | hi I'am making a new runescape private server I need help by a good coder knows about rsps to help me coding it |
 | Can anyone tell me what im doing wrong here ? I just want to detect the last word of the sentence and if not found to show "Not found." here is the code: String[] items = { "Iphone", "Computer", "Car" }; String field = Field.getText(); String text = "I want …  |
| | I improved my AES encryption code, I now generate a key from a password of any length. But now I dont know if I'm generating a 128, 192 or 256 bit AES key. Here is my code: import javax.crypto.spec.PBEKeySpec; import javax.crypto.spec.PBEParameterSpec; import javax.crypto.SecretKey; import javax.crypto.SecretKeyFactory; import javax.crypto.Cipher; public class AESCipher … |
| | Hello All This is probably an easy one (I hope). I have a JLabel whose text I am trying to right justify. Should be <labelname>.setHorizontalTextPosition(JLabel.RIGHT). Simple, right? (wrong). It does nothing to the text on the label. The text just shows up with it's default left justification. However, when I … |
| | Hie everyone, I am trying to develop a GUI through hard coding. I encountered a challenge: I created a Jframe and onto this I added a JPanel. **I assigned thge flow layout manager of the frame to null**(because i want to do the positioning of my components manually) The program … |
| | hi,I want to learn java programming with start to end,Do you know any free website or books for me.plz answer i am nobb student. Thanks,uxama |
| | Hello. I'm working on a project that requires some data to be encrypted with AES 128. My encryption works fine but when I decrypt I get an `Exception in thread "main" javax.crypto.IllegalBlockSizeException: Input length not multiple of 16 bytes` exception. Code: import javax.crypto.Cipher; import javax.crypto.spec.SecretKeySpec; public class AESCipher { private … |
| | Hello everyone, I want to develop a GUI like the one shown in the image below. I want to do this through hard coding - no drag and drop. Please may you assist me with: 1. what should i include to come up with such a **layout**. 2. how do … |
| | type Exception report message Unable to compile class for JSP: description The server encountered an internal error that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: Unable to compile class for JSP: An error occurred at line: 22 in the jsp file: /index_submit.jsp name cannot be resolved to a variable … |
 | if i have html forms that takes data from the client with jsp code i want to save this data at mysql data base how can i do this with code ??? |
| | Write a function IsoTriangle() that takes a sizw parameter and displays an isosceles triangle with that many lines. Use the DrawBar() function as a Basis. it should look like this: * *** ***** ******* this is the drawbar() function: /*Overloaded DrawBar() program Illustrated overloaded DrawBar functions*/ #include <iostream> using namespace … |
| | please assist by explaining what this code is trying to do - i mean the logic. if ((InteractiveForm.this.tableModel.getRowCount() - 1) == row &&//i dont understand this line(the logic) !InteractiveForm.this.tableModel.hasEmptyRow()) { InteractiveForm.this.tableModel.addEmptyRow();//this is where we append a new row } the whole program can be found [here](http://www.javalobby.org/articles/jtable/?source=archives) any explanation is greatly … |
| | Hello everyone, I have my code that is supposed to append an empty row to a table at runtime when a user presses the enter button. The code is working fine. here is the code if it helps: table.addKeyListener(new KeyListener() { @Override public void keyPressed(KeyEvent e) { if (e.getKeyCode() == … |
| | Hi, I have been trying to create a game loop that is paused when a certain key is pressed. This seemed to work ok in Swing but in javafx the loop locks up the UI, even if i create a seperate thread. @FXML public void setPaused(KeyEvent e) { if (e.getCode().compareTo(KeyCode.P) … |
| | I have seen these two methods of using ItemListener. I am curios which is better and why. What are the differences? ItemListener a; Choice ce = new Choice(); ce.addItemListener(a); ItemListener itemlistener = new ItemListener(); itemlistener.handle = checkboxmenuitem; checkboxmenuitem.addItemListener(itemlistener); |
| | JMenuItem mItem[] ={copy,paste}; for(int b=0;b<mItem.length;b++) { mItem[b].addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e) { String mItemCommand = e.getActionCommand(); JTextArea copypaste = new JTextArea(scr.getText()); if(mItemCommand=="Copy"){ copypaste.select(0,scr.getText().length()); copypaste.copy(); } if(mItemCommand=="Paste"){ copypaste.setText(""); copypaste.paste(); String num =copypaste.getText(); try{double n=Double.parseDouble(num); if(num.indexOf(".")!=-1) isDecimal = false; isFirstDigit = false; if( n-((long)n)>0.0) // I just didn't understand codes starting …  |
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