[java] Forum Topics

code in java for send a free msg from internet to mobile phone like way2sms or 160by2 sites................. what are the requirments for that???? pls reply as fast as possible...........

I downloaded eclipse to my windows 8 computer along with the jdk and when I launch eclipse it tells me that it cannot not find the jre or jdk and that it is not in my current PATH. I have tried setting the path to the jdk folder but it …

Hello guys i want to show a data in my combobox when i click on an item ion my jtable i tried this but it doesn't work. i would apprecite it if any one can help thanx String add5 = rs.getString("Id_branch"); branch_combo.setSelectedItem(add5); String add6 = rs.getString("User_Role"); UserRole_combo.setSelectedItem(add6);

I am trying to write a program to calculate mean & standard deviation. I sort of figured out how to find mean (it is not correct yet, so i am going to need help on this part as well) but how do you do standard deviation? import java.util.Scanner; public class …

This is a code that I wrote and for some odd reason it doesn't count the number of inputted integers properly. import java.util.Scanner; public class IntegerCount { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.print("Enter an integer, the input ends if it is 0: "); int …

**HEre is my checkout.java** index LCval = new index(); final String LCnum = LCval.getVal(); JButton btnNewButton_1 = new JButton("Finish"); btnNewButton_1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { try{ int bal = 0; Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); String connectionURL = "jdbc:sqlserver://ROHAN\\SQLEXPRESS;Database=sys;user=rohan;password=rurouni;"; Connection con = DriverManager.getConnection(connectionURL); PreparedStatement pst =null; ResultSet rs = null; //Statement st=con.createStatement(); …

Is this correct? I wrote a decimal format and it doesn't work. how do i correct this: return sum / myFormatter.format(Math.sqrt(x.length - 1)); I will submit the full code if needed.

I learn Java programming language. I have a .exe file that was produced with lunch4j. I can easily run that application in my computer but I can't run it in other computer. I got error ""Window can't access the specified device, path or file, you have the may not have …

My requirements are as follows: 1. use main method 2. use the following array- `int[] grades = new int[] {` `82, 70, 99, 90, 92, 75, 87, 85, 91, 100, 91, 87 ` `};` 3. Write code to step through the array of grades and calculate the average grade. Modify …

Hey everybody, Lately I have written the game Hangman in many different languages (C, JavaScript, Java and PHP so far). Here is the code snippet for Java! It uses a words file, on the bottom of this post you will see a small example of a few words. The source …

I am trying to do an assignment that requires us to do something with pentagonal numbers. This is my code: import java.util.Scanner; public class Pentagonal { public static void main(String[] args) { System.out.print("The Pentagonal Numbers: "); getPentagonalNumber(10); } public static int getPentagonalNumber(int n) { Scanner input = new Scanner(System.in); System.out.print( …

I am trying to reverse the number that is doubled from the user input. Problem is that if they enter a number like 20000 it gets doubled into 40000 but it reverses it to 2 rather than 4. How do i get it to make the doubled number reversed and …

Okay, so for another assignment I have to find the distance of two points. I understand how that works but for some odd reason, when the program the professor set up tests it, the numbers are way off. This is what i have done: public class Distance { public static …

I made this minesweeper game earlier this summer. It shows many things, including: array use, 1D array to 2D array, gridlayout, changing the way a JButton works depending on mouse button used, floodfill, loops, GUI. slightly long, 382 lines, can probably be condensed. There is one known bug that i …

This is how you calculate the area of a triangle, hope you guys find this useful. import java.text.DecimalFormat; import java.util.Scanner; public class Exercise2_15 { // find the area of a triangle public static void main (String [] args) { double side1 = 0; double side2 = 0; double side3 = …

Hi guys, i am trying to find the area of a triangle and for some odd reason i can't get it to produce the right numbers. Here is my code: import java.util.Scanner; public class Exercise2_15 { // find the area of a triangle public static void main (String [] args) …

[CODE] try { Class.forName("oracle.jdbc.driver.OracleDriver"); Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl", "scott", "tiger"); if (con == null) System.out.println("Connection not successful"); else System.out.print("successful...."); con.close(); } catch (Exception e) { e.printStackTrace(); } [/CODE] Error: [CODE] java.sql.SQLException: The Network Adapter could not establish the connection at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:412) at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:531) at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:221) at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32) at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:503) at …

Hello I'm new to programming and I'm trying to make a java application that will "hear" (not record necessarily) the sound and display how loud is.I'm thinking of converting the sound recordings to numbers,so I can see the difference on the sound levels.I got this code and I added the …

I have following questions, can someone tell me if i answered correctly Can we configure portlet wiring for two portlets mapped on two different pages? no Custom Validators in JSF will be executed during the Render phase, is it correct? yes SOAPUI is specialized in optimizing the web services message …

How do you add a membership records in java(bluej) First Name, Last Name, phone number. Please can you help me

Hi, I was asked to make a Phone Book thats saves entries and call them up. Then the teacher added a new task. The Program should delete entries. He gave us a methode and said we are not allowed to use ArrayList or Hashmaps, ONLY Arrays. I tried alot but …

Hello guys i want to know if its possible to format a text as it is done ms-word on a jframe? i want to be able to edit the text i put on my jframe by specifying the heading, making some texts bold, adding font color to som texts and …

Okay, last question of the night. My program is to have a program collect a number, double it, and reverse. I am having problems with reversing it... Here is my code: import java.util.Scanner; import java.text.DecimalFormat; public class ReverseNumber { public static void main(String[] args) { Scanner s = new Scanner(System.in); …

hi guys, I wonder if anybody can clarify something for me. Take these 2 fragments of code (2 constructors belonging to 2 different applications): First one: public MouseTrackerFrame() { super( "Demonstrating Mouse Events" ); mousePanel = new JPanel(); // create panel mousePanel.setBackground( Color.WHITE ); // set background color add( mousePanel, …

Testing the following code from a book public class RunTime { public static void main(String[] args) { Runtime r = Runtime.getRuntime(); //MEMORY MANAGEMENT long mem1, mem2; Integer intmatrix[] = new Integer[1000]; System.out.println("Total memory is :" + r.totalMemory()); mem1 = r.freeMemory(); System.out.println("Initial free memory is :" + mem1); r.gc(); mem1 = …

Okay, so this is a similar error to the code before. So I created this: import java.util.Scanner; public class IntegerCount { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.print("Enter an integer, the input ends if it is 0: "); int num = input.nextInt(); if (num == …

On my code, it says that there are 2 mistakes and I can't fix them. Here is my code: import java.util.Scanner; public class Exercise4_1M { public static void main(String[] args) { int countPositive = 0; int countNegative = 0; int count = 0; int total = 0; Scanner input = …

// Create the cboSelectGroup, and add it to the navigation panel: //String[] strDefaults = {"Defaults"}; //cboSelectGroup = new JComboBox(strDefaults);Public Class Form1 cboSelectGroup.setPreferredSize(new Dimension(150, 40)); cboSelectGroup.setMinimumSize(new Dimension(150, 40)); cboSelectGroup.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnImagesActionPerformed(evt); } });

Hi guys, I am working on an assignment for a class of mine (Java) and I am really frustrated with it. This was my very last attempt (out of like 20)... System.out.print( "Enter temperature in Celsius to convert to Fahrenheit: " ); double c = kbinput.nextInt(); double f = ( …

How does java handle exception automatically?