35,619 Topics
 | |
 | Hi Dw I have a multi-threaded server that connects thousands of clients. The clients sends in data that the server must write to a text file. As there are a thousands of clients sending in data the server has about 60 texts files but the data sent by the client …  |
| | hi i need the answer of :- write any 3 java programs, but their is no java programs in the computer  |
| | Java swing component jtabbedpane is opaque even after jtabbedpane.setBackground(new Color(0,0,0,0)); or jtabbedpane.setBackgroundAt(index,new Color(0,0,0,0)); |
| | trying for the longest while to get this program to run at least properly, havent finished entering all of the codes as, just testing each part of the statement before i add in the rest of the codes the program is not working properly dont know where I have gone … |
 | Every time I try to compile this code I get the same error but it doesnt seem to make any sense. This is the code: public class Software Development { public static void main(String[]args) { System.out.println("Hello World"); System.out.println("2name"); System.out.println("name: \n"+name); System.out.println("\"name:\""+name); } } And this is the error: Software Development.java:1: … |
| | I am currently working on a program that asks a student to answer 5 simple maths questions after each question it will state whether the answer is right or not. which it will out put a grade and grade average percentage. Currently I'm stuck on the if statement where it … |
| | package deviation; import java.util.Scanner; public class Deviation { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.println("Enter n: "); int n = input.nextInt(); System.out.println("Enter " + n + " numbers: "); double[] x = new double[n]; int i; for (i = 0; i<n; i++) { x[i] = … |
| | Sorry for the misleading question guys, I know how to generate two random numbers but I want to use them in One JOptionPane input Dialogbox so the user can add the two numbers. Below is my code of what I have done so far I know it's not a lot … |
| | hi all i am doing a programing and got stuck on two condition. here is the code that I have done so far. it is as far as i reach. for(int i=1; i<=3; i++){ System.out.println("please enter the employee id number"); emp_idnum = input.nextInt(); System.out.println("please enter the employee first name"); empfirst_name … |
| | Hello, Thank you for your time! I am trying to understand the Quick Sort algorithm. I have some questions about the partition method. I found the following implementation online: import java.util.Scanner; public class QuickSorts { public static int partition(int a[], int left, int right, int size) { int pivot = … |
| | At my work we have an internal webite that only uses Java 6. 7 and up will crash the site locally. I am aware that it really needs to be update for many reason. Does any one know of a way to launch IE to use an older version of … |
 | I have a JTable that has four columns. In the second column I have assigned a JComboBox to be the cell editor of my column.The problem that I encountered is that I cannot handle the combobox the way I want. **What I want is that after a user select an … |
| | Hello I am new to Java & I am trying to find ways(in built Java objects/ways) to parse HTML. Can you suggest some objects in the Java Standard Library? I have extended the object HTMLEditorKit.ParserCallback but when parsing a web pages' source code it literally takes 2 minutes or more! …  |
| | here is my code and i have tokenized the data in my .txt file.I want to insert them into a database. import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; import java.util.StringTokenizer; public class test1 { public static void main(String[] args) { BufferedReader br = null; try { String sCurrentLine; br = new … |
| | <html><head></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">import java.text.DecimalFormat; import java.util.Scanner; public class BookBillSystem { public static void main(String[] args) { //create the Scanner instance for taking input from console Scanner scanner = new Scanner(System.in); //take input customer name System.out.print("Customer Name: "); String customerName = scanner.nextLine(); //take input noOfBooks purchased System.out.print("No of books … |
| | When I try to type in a set user to add to the friends list, it shows up blank via [[]]. I know I'm missing something or it's the way I set up the input, but I can't figure it out. Main Driver import java.util.*; public class main { public … |
| | I want to ask >>what is the use of (string args[])??? and how can I use system.exit >>without intially import the package (java.lang) ? thanks ^^ import javax.swing.JoptionPane; public welcome1 { public static void main (stirng args[]){ JoptionPane.showMessageDialoge(null,"welcome to java"); system.exit(0); } } |
| | i am using eclipse to write code that allows me to take a text file containing data (in my case it looks something like this :20 30 40 50 etc).i want to write the code in java and i am using eclipse as my IDE.i need the database to be … |
 | Here my code. package formsign; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import javax.swing.*; public class textF extends JFrame{ private JTextField fname; private JTextField lname; private JPasswordField pass; private JTextField country; private JTextField zip; private JTextField month; private JTextField day; private JTextField year; private JTextField phone; private … |
 | Hello all, I am trying to take input from user using scanner. The problem is, when the loop starts, it skips taking input for the first iteration. Here is the code: import java.util.Scanner; public class TrigTriangles{ public static void main(String[] args){ int N; double a,b,c; double A,B,C; Scanner s = … |
| | Hi i have an application created in grails.. class Route { Integer prlNo String name String address String address2 String address3 String month Integer week Integer day Integer position String van String period Integer rang static mapping={ sort:["rang","day","position"] } and i have a controller that look for same van to … |
| | - Hi there. - I'm learning Distributed System and having an assignment of building a simple Game server using RESTful webservise. I'll use Java to build this server. And i need some help. - The game server provides the following services: + Register an account using for all game provided …  |
 | Hi, I have been searching out a lot of things to sove my problem but none of the solutions I found worked in my case :'( Here is what I am trying to do: 1. When the screen is off, my BroadCastReceiver detects it. 2. Once screen_off is detected, acquire … |
| | Hello All, I am working on a project for class and I have everything work except for one little thing. I can compile there is no issues with running the program. However, when get prints the information I get a null as the value for the Mobile OS. I do …  |
| | I'm in AP Computer Science A* I was doing the following problem: int i = 1; while ( i < 10 ) { int j = 10; while ( j > i ) j--; i += j; } System.out.print(i); The output is 16, but can someone please explain why it …  |
| | what input statement is used in a float..` import java.util.Scanner; public class Program1 { public static void main(String[] args) { float Fahrenheit, celsius; Scanner input = new Scanner(System.in); System.out.print("Enter temperatue in Celsius"); celsius = input.nextDouble();<---- this line is giving a run time error. Fahrenheit= ((9 * celsius)/5 +32 ); System.out.println(celsius … |
| | Hi I am a senior at high school. The school is making us create a product to present and I want to create a Java computer program for my product and present that. I want to make something cool and something that'll make you go "wow". I've narrowed my category …  |
 | somebody can help me... |
| | [This article](http://lifehacker.com/the-top-programming-languages-ranked-by-job-demand-po-1601752302) will give you at least one good reason...  |
| | I am developing a java application that uses a jtabe to allow the user to capture data. This data would be written to a text file later. The application is working fine. Good. However, I wanted to add a button such that when a user click this button, the application … |
The End.