32,204 Topics
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| | In my GUI class I am trying to make an instace of my ToolAction class, which extends AbstractAction. The compiler says [QUOTE]The constructor ToolAction(String, int, PowerPaintDrawingPanel, GeneralPath) is undefined PowerPaintGUI.java line 109[/QUOTE] which means my below attempt make an object of ToolAction does not work beacuse the arguments of my … |
| | Hi, I would like to ask if anyone knows how can I delete empty lines from a file. I thought that I have to crate a loop like [code] FileInputStream fstream = new FileInputStream("input.txt"); DataInputStream in = new DataInputStream(fstream); BufferedReader br = new BufferedReader (new InputStreamReader(in)); String strLine; while(br.readline()!=null) { …  |
| | .,'is any knows the code to delete a directory in java... help me pls... YOUR ANSWER IS HIGHLY APPRECIATED!.. |
| | Using java and netbeans to write a query How does the (:) colon change this String? [ICODE]String partial=("SELECT c FROM content c WHERE c.artist LIKE \"%" + like + "%\""); String partial=("SELECT c FROM content c WHERE c.artist LIKE \"%" + :like + "%\"");[/ICODE] |
| | Hello all! I am trying to create a form like structure using Swing to enter data into MySQL database. I have a combo box that has a list of items to be chosen. If the user does not find the option that he needs, he can choose 'Other' as an … |
| | Can someone help me figure out why this .form compiles yet the query to perform a search throws this error? I have one entity manager,at startup "query and list set the table with all data from [ICODE]<splashtemplateda.Content>[/ICODE] combobox and textfield and button(action) should config search specs and refresh table with … |
| | Hi all, I am getting Null pointer exception while getting other applet in the same page, can guide what i am doing wrong here is demo code [code] // First applet import java.applet.Applet; public class Applet1 extends javax.swing.JApplet { Applet applet1 = null; public void init() { try { java.awt.EventQueue.invokeAndWait(new … |
| | .,'is there any software in w/c we can simply creates a frame in java by just click and drop only???I still didn't know it????help me to know this pls....:)  |
| | Please can anyone tell me how to convert a string in a text field to an integer. im using [ String q = answerField.getText(); int n1 = Integer.parseInt(q);] in my programme but i get the errors: Exception in thread "main" java.lang.NumberFormatException: For input string: "Enter Answer here!" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48) at … |
| | Hello everyone!!! I hope you could help me with this one... In VB.NET ...If you want to display the content of your database in a datagridview component what you just need to do is to call odbc.odbcDataAdapter so that it will display all the data in datagrid as exactly as … |
| | I'm having a little trouble trying to nest two component classes (both extend JComponent) together. When I create the frame in my tester file, instantiate each class, and try to add both of them to the frame, it doesn't come out correctly. For instance, I want my frame to display … |
| | can anybody tell me how to send login info to yahoo server? thanks........ |
| | Create a class named Package with data field for weight in ounces, shipping method, and shipping costs. The shipping method is a character A for Air, T for Truck, or M for mail. The Package class contains a constructor that requires arguments for each weight and shipping method. The constructor … |
| | hi all, i need javascript function to validate the Date of birth field...it should check,leap year condition and also the year should nt be the future one.. Thank u...  |
| | Can anyone tell me where I can get some tutorials regarding Socket programming over http. I want to make an application that enables the user to login to Yahoo IM. pls help me... Thanks... |
| | Hi. First of all, I am new to java and I am having some problems in understanding arrays. I was asked to do the following program. [COLOR="red"]2[/COLOR] 5 9 8 7 3 [COLOR="red"]4[/COLOR] 8 5 3 7 6 [COLOR="red"]9[/COLOR] 6 3 8 9 5 [COLOR="red"]3 [/COLOR] 2 1 3 1 … |
| | how to delete objects to free memory ????????????? and when did Garbage Collector work to delete unused objects ???????? |
| | My program compiles and runs okay, but is not displaying my restocking fee and I am not sure why. Attached is my printout of how it displays. [CODE]//Product.java works with Inventory4.java file import java.util.Scanner; // program uses class Scanner public class Product4 { //Private Variables private String name; //Product name … |
| | I have a JButton with both an ActionListener and a MouseListener: [code=Java] b.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ae){ performLeftClickAction((JButton)ae.getSource()); } }); b.addMouseListener(new MouseAdapter() { public void mouseReleased(MouseEvent me){ if(SwingUtilities.isRightMouseButton(me)){ performRightClickAction((JButton)me.getSource()); } } }); [/code] Here are the 2 actions for right clicking and left clicking: [code=Java] performLeftClickAction(JButton b){ //problem … |
| | hi guys , how could i to lock a the parent frame if the child frame is generated, (i.e. i generate joptionpane message how to lock the parent frame till the user responding to child frame)  |
| | hi all, how to set the location of joptionpane dialogs to the locations of the parent frame |
| | Hi Everybody I am in need for help. I have a program which is surppose to allow the user to input a boat and a time and date of hire for that boat. Problem is that the button wont work and i dont know how to get the time in … |
| | The Dearest I have done engineering in SOFTWARE and now doing masters in COMMOUNICATION SYSTEMS AND NETWORKS. I need VOIP Applications basic architecture project developed in any language either Visual basic or Java OR if you have any project on Wireless Technology ,Wimax, Adhoc Networking ,Network security or network auding …  |
| | Hello Everyone!!! Does anyone here knows how to display the content of the database in a JTextArea? For example.... In mydatabase, I have a column name 'username' and I want to display all the contents of that 'username' in JTextArea.. What shall I do and what classes I need to … |
| | 1) How do I tell if I have java 5 or java 6 installed? 2) I have my program commented using javadoc syntax. However, when I run javadoc from the command prompt and then open the html files, I do not see any documentation. What am I doing wrong? For … |
| | Hi, i am new to this forum, and also new to JAVA, at the moment i have an assignment in which i am desperately in need of help. I don't know much about MVC and i was wondering if there is any one out there that could help me. regards. |
| | [CODE]import java.text.DecimalFormat; import javax.swing.JOptionPane; public class PayrollSystemTest { public static void main( String[] args ) { String workerType; String first; String last; String ssn; int month; int day; int year; float salary; float rate; float hourlyWage=0; float hours; float wage; float sales; DecimalFormat twoDigits = new DecimalFormat( "0.00" ); // … |
| | I want to write a project using netbeans ide 6.0 to read a xml file and display its fields to user then user changes some fields and program updates xml file.How can do this By JAXB and Marshal\Unmarshal Commands. thnks |
| | I would like to draw an array of robots. How do i complete this class to draw the head, body, legs of a robot given that the robot is to be drawn within an invisible rectangular Container. The position and dimensions of the Container are given as parameters to the … |
| | [COLOR="Green"][B]How is your experience with java handling databases? very simple please post your Feedback? thank you[/B][/COLOR] actually i am going to build a library database application; but don't have any idea of handling database with the java!!! and is it possible if you create database table in ms access and … |
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