35,619 Topics
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| | SA i ask if any one can help me in this grammar problem : Expression ::= Expression ( "&&" | "<" | "+" | "-" | "*" ) Expression | Expression "[" Expression "]" | Expression "." "length" | Expression "." Identifier "(" ( Expression ( "," Expression )* )? … |
| | Hello Friends, I have 6 to 7 threads which are running parallely. Thing is I have to put Thread.Sleep() between each threads. How Can I optimize it? [CODE]else if (__selectedString.equals("Master DataInput")) { try { if (RecordStore.listRecordStores() != null) { System.out.println("IT FOUND RECORDSTORE ......"); RecordStore.deleteRecordStore("Company"); RecordStore.deleteRecordStore("Product"); RecordStore.deleteRecordStore("Model"); RecordStore.deleteRecordStore("Customer"); RecordStore.deleteRecordStore("Sales"); System.out.println("Delete All … |
 | I have two JSliders that are both going to a common stateChanged Method, but I am having trouble separating them. I assumes they were somewhat like separating something in the actionPerformed method, but it doesn't seem to work. it does however go into the method, it is just the if … |
| | Hi all, I have 2 JSP Pages, page 1 contains attachment button for (attachment to be uploaded) and Done button for navigating to second JSP page. Currently Done button is not wait for the attachment to be uploaded .When user clicks on Done Button if attachment is in processing I …  |
| | I am thinking to use MySQL with my new Java project, it contains some code that creates database locally and store data in it. It is all fine on my machine as I have all requisites installed like MySQL server but what will happen when I give this developed software … |
| | Hi! Does anybody know how to recursively read in files from a specific directory on the internet, in Java? I want to read in all the text files from this web directory: [url]http://www.cs.ucdavis.edu/~davidson/courses/170-S11/Female/[/url] I know how to read in multiple files that are in a folder on my computer, and … |
| | I am new to MySQL and thinking to use MySQL for my new Java Project which creates a database on the local client machine and uses it to perform all data operations. But before proceeding with MySQL I'm in a bit of doubt that I have MySQL server installed so … |
| | I have several different classes and they have graphics in them. I told java to repaint in a class class called LongitudinalWaveGraphics, but it repaints a class called ResistorCCGraphics. Why is this? Thanks for the help. if you need any codes then I can post them. |
| | could someone plz help.. i'm stuck in one part where u have to access the array form the main class(random) ive juss posted the two classes i have doubt in.. the question goes soemthin like this: Q:Make a java class file for function that can do addition, then make a … |
| | i want to create a moblie application that consits of a form which user can fill and it can be submitted to a online postgres sql database it must be for s40 phones i am using netbeans mobility can some one tell me how should i proceed and it possible … |
| | hi there, I'm currently creating my first mobile app, a drinking game (I know, alcohol and technology don't mix. But alcohol and manual calculations are even worse!). All my data is stored in an 2-dimensional array. the number of users may vary from game to game (=number of rows) but … |
| | Number of pages =========== rate per page (cents) First 100 ============ 3.0 Next 100 ============= 2.5 Above 200 ============ 2.0 Example : Printing cost for 200 pages is $5.5 Printing cost for 301 pages is $7.5 write a java(application) program to do the following: - prompt the user for the … |
| | hi I am a beginner. I am building java application which is like a form. First the user fill the whole form and the click OK. I want to do that as the user clicks OK all the items entered in the JTextField will save in the variables that I … |
| | I am doing a project title "video chat" on web based application. Is there any java framework available to access webcam ? |
| | Hello, I have a JPanel (inside of a JFrame). I have a picture(.jpg), a JTextArea (with scroller) and a JTextField. On the JPanel, I want the picture left justified , the JTextArea right justified and the JTextField just below the JTextArea. What kind of layout would be appropriate? Thank you! … |
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| | Can anyone help me out i want to learn to become a software developer, i need to know how to get started. |
| | so i am trying to learn java on my own as a hobby, because well i didn't see my self doing this for a living, and i did terrible in the class, so i am going over the text book again, and starting from scratch. i am not sure if … |
| | Hi there, I have this long Q and I must solve it to get bouns or i will fail :( Develop a statistical program to compute the famous statistics. First, create a text file, data.txt, contains several observations. Then write a java program that displays the following menu: Main Menu … |
| | I have a java project, which runs fine on eclipse. Right now, I need to run it from command prompt, like java classpath ... How to setup this classpath based on the stored ones using in Eclipse. |
| | Hi, I am using eclipse and Netbeans 7 whit Java JDK 1.6 i am wondering how do i add java extensions. I want to add Appache libary : org.commons.apache.2.4.jar to my java because their libary offers a lot of good extensions such as coutnMatches method.  |
| | Hi, I have a jFrame with a couple of jLabels, designed in Netbeans so most of the code is generated. If I want to change the text of the label, I use .setText() inside my jFrame and it works great. Now here's the problem. If I just make a String … |
| | I need to run a javascript page from my app and receive the page that results from the script on a String. This is my code: [code=java] try { URL testurl = new URL("http://www.site.com/page.html"); try { String s=testurl.getContent().toString(); System.out.println(s); } catch (IOException ex) { Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex); } } catch … |
| | I have URL like this: [code]http://www.site.com/app/index.html#secret_code=gagh362%%23atg._f46&other=5449[/code] I need to pass gagh362%%23atg._f46 part to a string. All the examples i find are for simple PHP parameter parsing and i'm having difficulties to adapt them to this case. Can someone help? |
| | i am developing a BE final year project on Video Conferencing from Java with both unicasting and multicasting. I found there are some protocols such as SIP to implement it. are there any better and efficient way to implement it? |
| | The result for the code below is "ex [6, 7, b, d] [6, 7, b]". Therefore I am wondering how did the exception take place and why is the value 3 missing? [CODE] import java.util.*; public class Exam6 { public static void main(String[] args){ TreeSet<String> t1 = new TreeSet<String>(); TreeSet<String> … |
| | Could someone explain to me what it returns? int result2 = negative(-3); System.out.println("The final answer is " + result2); [B]public[/B] [B]int[/B] negative(int num){ [B]if[/B](num >= 20){ [B]return[/B] -5; }[B]else[/B]{ [B]return[/B] negative(num + 4) + 2 * num; } } |
 | Hello guys, I am pretty new at (good) programming, so I had some pretty bad code I was using until I ran across some code and decided to model my code after it. I have the code so it has no errors, but when I run it (NetBeans) it doesn't … |
| | Hello all, I have a window with a JList inside it. I would like each line in the JList to show up in a certain font. But when I try the 'setFont(font)' method where 'font' has already been defined it say that it cannot find the symbol 'setFont(java.awt.Font)'. Here is … |
| | Hie good friends! I have got a Jsp form for creating a database record for students. The form has got a drop down box for Countries, but the countries are too many that a user may spend a lot of time scrolling to locate his/her country. The drop down is … |
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