32,204 Topics
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| | please consider the following file of given staff. [CODE]Bob 100100653 5860 London H3ll0 1[/CODE] How do i extract the 6th line for multiple files and generate a report in java for each files under same directory? the above is just one file data. i want to read multiple files and … |
 | I am reading the book Head First Java. Reading the chapter 'networking and threads' I tried to run a project in my Eclipse IDE that consists of a chat server and chat clients. The problem is that I am getting no feedback in the clients text area and debugging seems … |
| | Hi, I'm a beginner with Java and I've encountered some trouble with simple I/O. Thing is, I have to enable the command line and write a file name of a textfile which holds a simple number. That number I have to get from the file and into JGrasp and print …  |
| | So, I need to make a flash card app on java and I'm planning on using blueJ. My main problem is that I don't really understand how to make a menu interface in which you can choose to flip the card, go to the next card, etc. Thats my main … |
| | Can someone help me with this? I have proble with Array Lists , As you can see in the ouput I get same values but I need to put in different values , what am I doing wrong? Thanks in advance and Happy New Year! [CODE] import java.util.*; public class … |
| | My task is to: Pick 10 of my favourite NBA or NHL players from 2 top teams and display the player name, team name, points, rebounds, and assists for each of them. I then have to store this information as a table in a .txt file (This part is completed). … |
| | Hi i am trying to connect with the data base with the following code but it is giving me an error. [B]CODE:[/B] [CODE]/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package dbaccess; import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import …  |
| | Hi Friends, I have a doubt in accessing the memory address . In java there is no pointers like c . then how can we access the address of the memory variable. |
| | hello! i m reading servlets these days and i want to read about structs and sessions.please give me links here so that i can read about them and so that i can make some application(web) based on concept of these two. i have searched google and also find many things, …  |
| | please tell me what exactly buffer is ? i have searched google.com a lot but not find what exactly it means ? what it means if i say "flushing the buffer"..? please tell me..what exactly is it ?? |
| | [CODE]PrintWriter file= new PrintWriter(new FileWriter("league1.txt",true)); file.print(value1); file.print(','); file.print(value2); file.print(','); file.print(value3); file.print(','); file.close();[/CODE] i m using this code to write in a file.. i m using this in servlet.value1, value2,value3 are Strings. and i wana to write it in file named "league1.txt". i have made this file in WEBPAGES folder in … |
 | [CODE] Set<Integer> set = new HashSet<Integer>(); Integer i1 = 45; Integer i2 = 46; set.add(i1); set.add(i1); set.add(i2); System.out.print(set.size() + " "); set.remove(i2); System.out.print(set.size() + " "); i1 = 47; System.out.print(set.toString()); set.remove(i1); System.out.print(set.size() + " "); [/CODE] The result of this code is 2,1,1 but my expectation is 2,1,0 Could any … |
| | I have a extremely small problem, I think its my own fault, but i just cant seem to find what it is. I'm making a program with a gui, and in the gui there is a main menu with 2 JButtons. When I click on a JButton the JPanel/JFrame is … |
| | hello all my part of code give me message to recompile with -Xlint:unchecked How to fix this code so the message gone thank you denny [CODE] if(file.exists()) { FileRead fr=new FileRead(); String astring=fr.Read(filePath); System.out.println(astring); /* delimiter */ String delimiter = ","; /* given string will be split by the argument … |
| | this is the program i have to write you have to write a program using java language which will realize the following scenario project scenario:when you run your program it will display a welcome messege (you choose ur welcome messege). then program will ask to input a number beetween 1-9999, …  |
| | hello everyone... i need some good open source Graphs and Charts gui(2d and 3d) for java. Please suggest me some.  |
| | I am trying to design a file reader with some sort of GUI so I decided to use JOptionPane. I am a complete noob trying to learn java. So far, I have managed to make my program produce a pop up for the file location, and also an error message … |
| | I have a project, it's simple game just to make a game called congklak. it is traditioanl game from Indonesia. The project has finished, and work, well compiled, all components like package, database (*.mdb), and all the pictures are read by programs. But when it's deployed, the pictures and database … |
| | complie first java type the fllowing command & view the bytes codes java-c first.  |
| | I installed Java using .bin file. The folder i installed is JDK(/usr/lib/jdk1.6.0_29) and JRE(/usr/lib/jre1.6.0_29). I googled to set classpath but that things didn't work for me. Can any one suggest me commands using the folders that i mentioned above, to set classpath to execute a sample java program. |
| | hey! i have made a List object as follows: List error = new LinkedList(); and then as per my requirements, i have added strings in it. like error.add(); like this. so, now at some time, i want this list to be empty, so i was doing error=null; which is giving … |
| | Hey there, is there a way to convert a string to a tree path? i can convert a path to a string, but not the other way around... [CODE]jTree1.getSelectionPath().toString()[/CODE] thats the only way i know.. nooo idea how to convert it back?? |
| | Hey there. I have a program that uses access, and everytime i go to install it for some one i have to keep my fingures crossed and hope they have office installed on their pc. Is there a way to run my program without buying microsoft office? (using access database) … |
| | I am getting java.lang.nullpointer exception for this code plzz help me out all database linked programs are creating same error [code]import javax.servlet.*; import javax.servlet.http.*; import java.io.*; import java.sql.*; public class retser extends HttpServlet { Connection c; Statement st; ResultSet rs; ServletConfig config; public void init() { config = getServletConfig(); try … |
| | import java.net.*; import java.io.*; import java.util.Date; import java.util.*; public class crawling { //Properties private String startUrl; private int maxUrls = -1; private boolean limitHost = false; private boolean crawling = false; private Date currentDate; private int counter=0; // Set up crawl lists. HashSet crawledList = new HashSet(); LinkedHashSet toCrawlList = … |
| | Im trying to make a simple program.It just has a couple JButtons and JTextFields, but its looks kinda odd, and I was wondering how to change their size. Thanks In advance Scheppy |
| | Dear Master, I have some confuses problem, I have an java window application that has been used almost 2 years more, suddenly today, when i run the application, error message come out "this application is corrupt". I try to run in others (almost 5 workstation), the result is same. any … |
| | I have to create a midlet using netbeans. It says have 1 form that allows the user to enter data. Second form shows a gauge. The third form displays results. It must also have 2 threads. 1 thread that reads the users input and another thread that carries out some … |
| | Hi Friends how to extract following data and store in string variable. All variable are string no need to use any other data type like datetime and so on. [CODE] Deposits and Additions Date Description Amount Refe 11/01 Test1 201f13050000100 NEWEDGE 1,500,000.00 OBI:FFC SAN LAZARO, SA A/C 430 11/01 Test2 … |
| | [CODE] import java.awt.*; import java.awt.event.*; import javax.swing.*; /* *Created by ************ *on Dec 28 *to calculate the area of multiple shapes */ public class AreaCalculator extends JFrame implements ActionListener { static JTextField triwidth, trihieght, recwidth, reclength, cirradius; static Container contentPane; static JPanel infoPane; static double circlearea; static JLabel circleanswer; public … |
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