35,619 Topics
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| | 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 …  |
| | Hi friends, Here is my code for selecting datas from myql database with the help of php.All i want to do is i want to pass and display image through intent from Activity 1 to Activity 2.im new in android so please help me. **Activity1** import java.io.BufferedReader; import java.io.ByteArrayOutputStream; import … |
 | Hi there, Has anyone know to use voice commands on Android phones? I am developing a clock that is capable of displaying numbers and words. I would like to extend my project and to add GSM module so it is capable of receiving msg. I would like to use Android …  |
 | I am developing a Java application that uses a JTable. I want to allow the user to enter data in a JTable that can later be printed or saved as PDF file. The issues is: Suppose the user has entered some data and the cursor is on the last cell … |
| | hello everyone, i am developing a quotation generator application using Java. I am using a JTable to capture user input(this input is taken from a database i.e. each cell of the tale will have a combobox where the user can select an input value). when the user is done he/she … |
| | I'm writing some custom encryption code in Java for my server. The only problem is that in my encryption I'm using XOR. The data gets encrypted fine, but when I decrypt it doesn't decrypt correctly. I am not sure what is cuasing this problem. Here is my code that I … |
 | hi, I am creating an android app that is supposed to retrieve data from a remote database (Mysql) I'd like to pass the parameter to my php file using url and get the result that I'll display in the apps can someone have an idea of how to proceed? thank …  |
| | hi i have changed a java process as the windows service. but in this whenever i am starting the windows service two java processes are running.it is spoiling my work totally can we have any way to remove a java process? |
| | it is told that in object oriented language every thing is an object.. ihave written two lines:- int a; Object b; when i do b. options appears but when i do a. options do not appear..accourding to theory a is also an object then why the same option appear for …  |
 | hello sir... i'm abhishek .Can you help me to solve out some issues on smslib . i cant read message on smslib. please help Thanks |
| | Can someobody tell me why i only see blank window. import java.awt.*; import java.awt.GridBagLayout; import java.awt.event.ActionEvent; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTabbedPane; import javax.swing.JTextArea; import javax.swing.JTextField; public class dic extends JFrame{ public JLabel label1,label2,label3,label4,label5,titlel; public JTextField ew,fw; public JTextArea txar1,txar2; public JPanel … |
| | am trying to implement the State Space of the game towers of hanoi the problem i cannot implement a deep copy to an object the results are very wrong :) and am in a hell miss , all am trying to do is to insert the potential changes between bigs … |
 | I have website project .user can log in to use it at the home page now the problem is if any user write URL for any other page without login it will show him the page I need to ensure that any user visit other page have already logged in … |
 | For a project, i have to create an address book and I am trying to get it to store the person data into an array list and read from a file text but have not been able to figure out how to do it. Here's the instructions: 1) Add a … |
| | Hello everyone, I have a page written in HTML5 which atuomatically resizes the page when used on different devices. I also have a menu which goes from a drop down menu in desktop mode to a sort of pull down menu in mobile mode. This video pop-up works in desktop …  |
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| | Hello i have an problem with an inheritance query using JPA (There is my Class Hierarchy) +UsuarioGenerico (MappedSuperclass or Entity - but is Abstract) -+Usuario (Entity) -+UsuarioPorEmpresa (Entity) Then, when i try make an select for Usuario, i not obtain results i try with an NamedQuery: `@NamedQuery(name="Usuario.findAll", query="SELECT u FROM … |
| | Why this doesn't work? class Faculty extends Employee { private long[] officeHours; private String rank; public Faculty(long[] hours, String rank) { this.officeHours = hours; this.rank = rank; } public static void main(String[] args){ //some code here Faculty f = new Faculty(newToken[], tokens[tokens.length-1]); |
| | import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import javax.swing.ImageIcon; import javax.swing.JOptionPane; public class Main { public static void main (String[] args) throws Exception { Class.forName("com.mysql.jdbc.Driver"); Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/convocation","root",""); //ImageIcon icon = new ImageIcon("C:\\Users\\a\\workspace\\MysqlName\\img\\U.png"); //JOptionPane.showMessageDialog(null, "Custom", "Custom Image", JOptionPane.INFORMATION_MESSAGE, icon ); int id_convo= Integer.parseInt(JOptionPane.showInputDialog(null,"Please Insert Student Convo ID\n(eg:01,02,03)", "U … |
| | 1. N-queen problem The n queens puzzle is the problem of placing n chess queens on an n×n chessboard so that no two queens threaten each other. Thus, a solution requires that no two queens share the same row, column, or diagonal. Solutions exist for all natural numbers n with … |
 | Hi guys. I'm working on a christmas present for my dad, it's a program that installs 8 Black Keys songs on his computer. I'm having some trouble with it though. I can't figure out how to get the files out of the jar file. I used to access them with … |
| | I am making my own component similar to the JOptionPane, but with some added GUI components specialised for my current project. I have finished with the GUI of the component, but I do not know how to make wait for the user to enter input before continuing, as the JOptionPane … |
| | hey you guys I just want to take this time to wish your guys a merry christmas and a bright and prosperous new year, I know that I will have to do over this programming course in the next semester even though i havent got any result yet. still havent … |
| | I have created a height score class by keep track of time. In this class top 5 score are saved in file using Preferences and than they are display on screen. First I am setting up top5Time array by filling in all zero's. Than I am getting top 5 time … |
| | I have a 2d array and I want to check if its in increasing order. here is a example of 2d array increasing order: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, here … |
| | How can I create a TextureRegion into button in libgdx-android(java)? I found a simailar solution here: http://stackoverflow.com/questions/21488311/libgdx-how-to-create-a-button problem is that it is using BitmapFont and I am not. I upload a image using TextureRegion and now I want to turn this image into button. any ideas? |
 | Hello Geeks; In the eve of new year i have some fresh topics for you. I heard that web is full of real life oop design samples and comprehensive object oriented design guides. Which sites would you offer or which tutorial sequence should i follow ??? PS. Of course other … |
| | Need Assistance Please. My code is not adding the size and the toppins: import javax.swing.*; import javax.swing.border.*; import java.awt.*; import java.awt.event.*; import java.util.EventObject; public class PizzaCalculator extends JFrame implements ActionListener { JPanel westPanel = new JPanel(); JPanel eastPanel = new JPanel(); JPanel centerPanel = new JPanel(); JPanel northPanel = new … |
 | Hello I am studying for the 1Z0-803 (Oracle Certified Associate, Java SE 7 Programmer) exam and I have the hardest time with following the flow of nested loops. On practice tests I do ok on more complex concepts like polymorphism but I miss over half of question with nested loops. … |
| | Hello, I am working on project of developing video stagenograhy. i have referred following link. http://www.dreamincode.net/forums/topic/269189-video-steganography/ also read a lots of material on it and found total 10 encoding and decoding algorithm. please send/suggest me good material for video steganography. Just let me know how can encode/decode my message using … |
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