I have now slowly moving on the learning Database Connectivity.Found a simple example on one site and tried to execute it, Creating a database, connecting to it and displaying the output.
I am getting trouble with recordset in displaying all the records in the badabase. It displays the very first record correctly but if I try to enclose it in while(rs.next()) loop, it generates an error message saying "Invalid operation at current cursor position".
I am developing an application where blind person can interact with computer i have completed the part where computer responds as per command given by user.The part where i am stuck is i want to give voice feedback as user moves the curser for example if mouse is on d drive then user should get feedback that its d drive....i want to do it for whole windows ...
How can i assign current null value to current date, I only what to assign this if the current value coming from database is null otherwise i must use value from database
I want to be able to use the current date to solve a math problem, specifically as follows:If today is March 17, the math problem of the day should be:
(Month times Day of Month) + 99 = Answer of the Day
(3 x 17) + 99 = 150
How can I create a java script to find the current month and the current day of month, multiple those two together, then add 99 and display the answer as a result.
I'm programming in school using Netbeans and we've just started with graphical programming (i.e JPanel, JClass, JFrame). This is my first assignment and the purpose of this program is that when you press the mouse you will fill 4 circles with diffrent colors. I've managed to draw 4 circles with diffrent colors but I want my cursor to change color simultaneously. Here's my code so far ....
//Java klass "Klick" public class Klick { //Medlemsvariabler. private int x = 0; private int y = 0; private int r = 1; public int antal = Rityta.antalKlick;
I decided to change the mouse cursor based on the theme of the game. This is the code that I wrote for the declaration of the cursor:
ImageIcon imageIcon = new ImageIcon ("cursor / cursor.gif"); Image img = imageIcon.getImage (); Toolkit t = Toolkit.getDefaultToolkit (); Cursor cursor = t.createCustomCursor (img, new Point (0,0), "cur"); this.setCursor (cursor);
Having to click on different JButton in the menu of the game, a few screens later, I have to manage something in particular, such as determining the point of clicks that allows the action to take place?
In particular I would like to change the point of hotspots. The size of 136x163 is cursor.gif
Image - TinyPic - Servizio di hosting d'immagini, condivisione immagini & hosting di video gratuito
As you can see in the image I want to create the point of hotspots in the red dot of the image. How should I do to pass the correct coordinates in Point?
My problem is simple. Just set busy cursor on a scene. The scenarios is like this: I have simple application with a button on it. When I click the button, I will:
1. Set mouse cursor to BUSY 2. Do some work 3. Set mouse cursor back to DEFAULT.
I search the web and found some sample codes to set cursor. But they don't satisfy my need. So I wrote a simple application:
public class MainFormApp extends Application { @Override public void start(Stage stage) throws Exception { stage.initStyle(StageStyle.DECORATED); Pane root = new Pane(); root.setPrefSize(500, 300); Button btn = new Button("Click me");
[Code] ....
When I run application and click the button, cursor does not change to BUSY. I also tried to use Platform.runLater() but no luck.
I've been creating a digital clock using Java, and have made the mouse cursor invisible after a set period of time (40-seconds) and had the thought to make it visible again if mouse was moved.
Here's the code that makes it invisible:
ActionListener mouseTimeout = new ActionListener() { public void actionPerformed(ActionEvent e) { setCursor(blankCursor); } }; /* Make mouse cursor disappear after 40 seconds */ Timer mTimeout = new Timer(40000, mouseTimeout); mTimeout.start();
And here is what I have so far for making it visible again:
MouseMotionListener mouse = new MouseMotionListener() { @Override public void mouseDragged(MouseEvent e) { } @Override public void mouseMoved(MouseEvent e) { } };
I have tried using "setCursor(DEFAULT_CURSOR)" but NetBeans says that it "cannot find symbol" .....
This is my code. It is running great until I enter in the final color and hit enter. I get an Array Index out of bounds error, which I show at the bottom. I have fiddled with it, by moving the all answers correct into an if..else statement, hoping it would fix it. Needless to say, it didn't work.
Also, I am trying to figure out how to make the cursor appear in each guess box. It does in the first one, but after I hit enter, I have to click in the box each time to get one.
import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class RobertMaloneChapter17 extends JFrame { //final variables to set the width and height of my frame
[Code] ....
My Errors:
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 5 at RobertMaloneChapter17$Listener.actionPerformed(RobertMaloneChapter17.java:67) at javax.swing.JTextField.fireActionPerformed(JTextField.java:508) at javax.swing.JTextField.postActionEvent(JTextField.java:721)
I am working on a Java program that calls a stored procedure in an Oracle 11.2g database and retrieves a set of records via a ref cursor. The program follows the standard Connection/CallableStatement/ResultSet pattern. A ResultSet object is used to access and iterate through the returned cursor, processing each record in turn.
One of the database fields returned in the cursor is a CLOB, which I'm retrieving using the NClob class's getNClob() method. Two other methods - length() and getSubString() are then used to get the length of the CLOB and copy of it off to a String object respectively.
The problem is that these latter two method calls are relatively slow, taking around 80ms to complete for modestly sized CLOBs of, say, around 10KB in size.
Is this the most efficient way to access a CLOB and retrieve its contents? If so, is there anything I can do, to make it run faster?
Given a string of numbers and operator. Compute as follows:
Consider, "000293000002030403+0400293059694" is the input.
a. Separate the two operands and one operator: "000293000002030403" "+" "0400293059694"
b. On each string operand, take each digit. ADD them all. (2+9+3+2+3+4+3) + (4+2+9+3+5+9+6+9+4) The two string operands should now become two integers.
c. Lastly, perform the operation using the string operator specified on the original string. 26 + 51 = 77
I don't know why I get the sum of 52 when I use a for loop.
Here are my codes:
public class string2math { public static void main(String[] args) { String input = "000293000002030403+0400293059694"; String [] operand = input.split("+"); String firstOpera = operand[0];
We are running a set of unit tests using the latest ojdbc 7 driver and the highest open cursor keeps going up, until it hits our 300 limit, then throws the cursor limit exception. If we run these tests using ojdbc 12.0.1.1, the highest open cursor stays at 17 and doesn't cause this exception.
The query used to monitor these cursors is below:
SELECT max(a.value) as highest_open_cur, p.value as max_open_cur FROM v$sesstat a, v$statname b, v$parameter p WHERE a.statistic# = b.statistic# and b.name = 'opened cursors current' and p.name= 'open_cursors' group by p.value
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production Java 8 version 31
When addition operation is performed on the character variables ,then it specifies actually that the ASCII values are added because the character variable stores ASCII value of the character constant ,then why after the addition the result cannot be stored inside a character variable ,why it needs to be stored in an integer variable only ,when actually the character variable stores the ASCII value then why is it an error to store the added result in an character variable.
*Write a program to simulate this airport's operation. You might assume a simulated clock that advances in one-minute intervals. For each minute, generate two random numbers: If the first in less than LandingTime /60, a "landing arrival" has occurred and is added to the landing queue, and if the second is less than TakeOffTime /60, a "takeoff arrival" has occurred and is added to the takeoff queue*.
*Next, check whether the runway is free. If it is, first check whether the landing queue is nonempty, and if so, allow the first plane to land; otherwise, consider the takeoff queue. Have the program calculate the average queue length and the average time that an airplane spends in a queue.*
I have most of the code done as you can see below:
Right now, I am stuck on the first calculation which is trying to figure out the average size of the landing queue. For some reason, as you can see at the bottom of my demo program, the average always comes out to be 0.0 and I'm not sure what's wrong.
Secondly, how to calculate the average time a plane stays inside a queue for. Write a program to simulate this airport's operation. You might assume a simulated clock that advances in one-minute intervals. For each minute, generate two random numbers: If the first in less than LandingTime /60, a "landing arrival" has occurred and is added to the landing queue, and if the second is less than TakeOffTime /60, a "takeoff arrival" has occurred and is added to the takeoff queue.
Next, check whether the runway is free. If it is, first check whether the landing queue is nonempty, and if so, allow the first plane to land; otherwise, consider the takeoff queue. Have the program calculate the average queue length and the average time that an airplane spends in a queue.
I have most of the code done as you can see below:
Right now, I am stuck on the first calculation which is trying to figure out the average size of the landing queue. For some reason, as you can see at the bottom of my demo program, the average always comes out to be 0.0 and I'm not sure what's wrong.
Secondly, how to calculate the average time a plane stays inside a queue for.
I am currently learning recursion, and i have a query. I have a program that receives user input, and outputs the decimal input into binary form. In my recursive function, I have a if else loop to check if operation is completed.
public static int Converter(int input, int weight) { System.out.printf("Input is now %d, weight is now %d ",input,weight); if(input==0) { return 0;
[Code] .....
The final return, when input finally hits zero is concatenating 0 to whatever i have this far. e.g. Decimal 10 should give 1010, but because of the "return 0", instead of getting 1010+0, i am getting 10100.
I can solve the problem by creating a variable sum,and passing along, but i am just curious why the final return 0 is giving me not a +0, but a concatenate 0.
I am able to perform column operation but not able to perform row operation because i am not able to store data say a 2 matrix [][]. I need to store the data into a 2-D matrix. Here is my code:
Java Code:
import java.awt.List; import java.io.BufferedReader; import java.io.FileReader; import java.util.ArrayList; import java.util.Scanner; public class colRowRead {
Write a program to simulate the operation of a simple robot. The robot moves in four directions: Forward, backwawrd, left, and right. The job of the robot is to move items and place it in the right slots in each station. There are 8 stations plus the pickup station. Pick up station is the initial start where the robot picks the items. 8 items can be placed on each station. The nearest station must be filled before placing items on the next station. The items are marked with identification or serial numbers. The items with odd serial number go to the right and items with even number go to the eft. The last slot, number 7 is reserved for light items which are less than 80kg. The serial number is a five digit number, the MSB digit 5 indicates that the product must be placed in the fifth station which is keeping the product at 20 degree F.
When editing a cell, the existing code would use the right/left cursor keys to move from cell to cell as opposed to from character to character when editing a cell. I planned to override the functionality by tossing in the above code as a test to see if it stops the functionality before I override it.
After placing in the above code, the above functionality no longer occurs, but now the cursor moves within the cell as I wanted which is to move from character to character instead of cell to cell. Its great it works, but it really shouldn't. Essentially the default behavior has been restored when it should have really disabled the left/right keys.
I assume there is some underlying class someplace that is doing something to affect the behavior. Since a sample can't be provided I am wondering in what scenarios would the e.consume() restore default functionality?
I am trying to write a program which asks the user to enter two numbers and then do the arithmetic operation based on user's input . No compiling errors but when I run the program I keep getting "StringIndexOutOfBounds" error .
class arithmetic { public static void main(String[] args){ Scanner in = new Scanner(System.in); int ent1 = 0;
So, there's a new requirement to log which user issues what database operations. The dumb way is to pass the session object around, but I hope said dumb way is not the only way to achieve this. Hopefully there's another cleaner and smarter way to do this.
