Cannot Create Prefs Warning On Windows
Jun 12, 2014
When I run the following code from Java HeadFirst, everything goes fine but along with one error ( i don't know is it an error or exception, or some other windows stuff). The code is
import javax.sound.midi.*;
class ExceptionHandling {
public static void main(String[] args){
ExceptionHandling o = new ExceptionHandling();
o.play();
[Code] ....
And what I got on cmd ( I am using Windows 7) :
Jaspreet javac ExceptionHandling.java
Jaspreet java ExceptionHandling
Jun 11, 2014 5:19:40 PM java.util.prefs.WindowsPreferences <init>
WARNING: Could not open/create prefs root node SoftwareJavaSoftPrefs at root 0
x80000002. Windows RegCreateKeyEx(...) returned error code 5.
We got the sequencer
What is meant by code in blue? I know its some message from windows os and not from jvm. but i didn't understand it.
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Jan 3, 2015
What does this error mean, and also, when I get it, the command line hangs so that I can't do anything else (Is there a way to recover from that?). I'm running Windows 7.
Jan 03, 2015 5:00:59 AM java.util.prefs.WindowsPreferences <init>
WARNING: Could not open/create prefs root node SoftwareJavaSoftPrefs at root 0
x80000002. Windows RegCreateKeyEx(...) returned error code 5.
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Oct 26, 2014
What step to know to develop software..
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Mar 26, 2014
import javax.swing.*;
import java.awt.*;
import javax.swing.event.*;
import java.awt.event.*;
/* display selected number
if selected, bg is green
if not selected bg is pink
*/
[code]....
my compiler is telling me that the getList... method is not being overridden.but when I change the JList<String> to JList and Object to String in the parameters, i get a warning from the compiler that it's an "unchecked call".
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May 18, 2014
public void init(Board board) {
JPanel Panel = new JPanel();
Panel.setLayout(new GridLayout(board.getWidth(), board.getHeight()));
getContentPane().add(Panel, BorderLayout.CENTER);
Panel.setBorder(new LineBorder(Color.BLACK)); // it does not work also
[code]....
I have a JFrame. I added two JPanels to the JFrame. The first one is GridLayout and it should be situated at CENTER. Another one is bottomPanel, and that one should be situated at SOUTH.I would like to add two new JPanels(kit and another one) to the bottomPanel.Compiler does not show any warning or errors.The problem is, that bottomPanel situates at NORTH, not at SOUTH. kit situates at CENTER of bottomPanel, not at WEST.
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Mar 26, 2015
There are 2 methods and a main one. The first is a void that creates a 3x4 2d array and the second is to search for a value in the array, if found it will return the number of the row that contains that value. If not, it will return -1, but I am getting 1 error and 1 dead code warning.I will put comments at the lines that contain the problems
import java.util.Scanner;
class Question4{
public static void main(String[]args){
Scanner s = new Scanner(System.in);
int x,n;
System.out.println("Please input the value that will be used in the array");
x=s.nextInt();
System.out.println("What is the value you want to search for?");
n=s.nextInt();
createArray (x,n);
[code]....
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Sep 2, 2014
I'll start off by showing my full code:
Main class
import javax.swing.JFrame;
public class groupingTest {
public static void main (String[] args) {
groupWindow test = new groupWindow();
[Code]....
At the start of the groupWindow it turns yellow and it says "The serializable class groupWindow does not declare a static final serialVersionUID field of type long".
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Jun 23, 2015
This the output of java from my PC under linux platform (rhel 6.5).
[pentaho@vertica-srv1 Downloads]$ java -version
java version "1.7.0_79"
Java(TM) SE Runtime Environment (build 1.7.0_79-b15)
Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode)
[Code] ....
But the problem is while trying to open ETL program under linux platform [pentaho@vertica-srv1 data-integration]$ ./spoon.sh .... I received the following error messages.
[pentaho@vertica-srv1 data-integration]$ ./spoon.sh
Trying to add database driver (JDBC): RmiJdbc.RJDriver - Warning, not in CLASSPATH?
Trying to add database driver (JDBC): jdbc.idbDriver - Warning, not in CLASSPATH?
Trying to add database driver (JDBC): org.gjt.mm.mysql.Driver - Warning, not in CLASSPATH?
Trying to add database driver (JDBC): com.mckoi.JDBCDriver - Warning, not in CLASSPATH?
[KnowledgeFlow] Loading properties and plugins...
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Oct 26, 2014
I am getting notification about "The value of the local variable result not used" in my program when i am using boolean data type.But code execution was successful. Results are also displayed accurately.I am using Eclipse, there i i have noticed this warning.
* program to practice about comparison operators */
public class compoperators {
public static void main(String[] args) {
boolean result;
}
[code]....
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Feb 26, 2014
I have a question: I have a Java/JSP/JavaScript project that access back end Oracle database, and provide interaction through tomcat. After we deployed our project, I found one button does not generate necessary warning message from server, but when I deployed and tested our project on local PC, it does generate correct warning message. I am using the same IE, same tomcat version, and I am sure my container is pointing to the same database, and I am sure I using same version of project code by checking with GIT.
Here is the button that I click:
<a target="frmMain" href="RealignServlet?button=REALIGNMENT" title="Procedure Alignment">Align</a><br>
And here is part of the code of RealignServlet:
public class RealignServlet extends SiapBaseServlet {
private static final long serialVersionUID = 1L;
private static final Logger logger = AppLogger.getLogger(RealignServlet.class.getName());
private static final String PROC_QUERY_JSP = "ProcQuery.jsp";
private static final String REALIGN = "REALIGNMENT";
[Code] .....
Our problem is server could not generate alignMsg. But we can get it on local deployed project.
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Feb 13, 2014
I'm using windows.. and our server is UNIX.. I knew that it's possible to create DOS commands in java programs, I have tried it already..
What I want to know is, is it possible to create a java program (from windows) that can execute UNIX command?
Something like: I have a java program in my windows, and it will create a directory in UNIX server /home/dir..
Based on my research, I can connect to our server in command prompt of my windows using ftp <domain> but the commands there is limited.
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Dec 4, 2014
Im looking for the Java JDK 32-Bit for Windows 7, all i can find is 64Bit.
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May 13, 2014
i am using a frame over which i am loading a dialog. The singleton dialog holds a progress bar. I have created my own swing worker. i am controlling the construct method of swing worker(which functions like doInBackground method).I am trying to call hidedialog from an external file. The dialog gets stuck sometimes. How do i solve it . It works fine on win7 but fails on win8.
public class LoadingProgressDialogSingleton extends com.manu.scpoweb.common.ds.client.swing.dialog.Dia log {
protected static LoadingProgressDialogSingleton oneAndOnlyProgressDialog = null;
JProgressBar progressBar = null;
DFULoadStatusBean dfuLoadStatusBean = null;
[code]....
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May 28, 2010
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Also another problem is after trying this and it not working i tried to add a path to the system variables. I added a new path variable but i think once i did that it deleted the one that was already there. Is that going to mess up my computer? What the default path variable for windows 7 is?i've got the right destination as i typed cd to change directory and when i typed C: Program Files (x86)Javajdk1.6.0_20/bin it changed to that. And i noticed if i typed in the destination wrong its just made an error.
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Nov 17, 2014
Cannot reinstall java on this windows xp. Get an error -1 and install didn't complete. There are no java versions installed and apparently no java control panel either.
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Jan 19, 2014
I have a game which is very simple: it is two images, and one needs to reach the other. Once it does, it resets. I have a class which holds the two images, and another which holds the game. My images class extends my game class. The problem I am having is that when I run the program, not one, but two frames appear. One is the perfect game, working perfectly, and the other is the game without images. I want the one that is the game without images to simply stop appearing. I believe it is appearing because my class that displays the image is extending the game class, but I can't not extend it because if I do I get a whole lot of bugs and errors.
Image class:
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.*;
[code]....
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Jun 5, 2014
I want to create a Web page which can monitor and display the status of Schedule Tasks setup on different remote machine. This Dashboard should also has the capability to re-run the schedule task.
I know that I can achieve this via Runtime class by running schtasks /Query and get all the details. But I just wanted to know if we have any other better way to do this.
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Dec 8, 2014
How to copy the target of a link? I am using Apache's FileUtils class. I have tried the following and it only copies the link, not the target:
import org.apache.commons.io.FileUtils;
import java.io.File;
public class Copier {
public static void main(String[] args) {
File sourceFile = new File("C:/Demo/sourceDir/a_link.lnk");
File destinationDirectory = new File("C:/Demo/destinationDirectory");
FileUtils.copyFileToDirectory(sourceFile, destinationDirectory);
}
}
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May 5, 2015
I manage a small company through our bank's online system, that uses java, but I can't access it through any browser , they all give the same issue; after I choose the certificate file on my PC, nothing happens.
If i dual boot Ubuntu on my PC it works, so it's clearly something with the Windows installation.
Things tried :
- Reinstall Java, multiple times
- Clean anything Java and Oracle related in my PC (except registry, I don't know how to fuzz with that)
- Different browsers
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Apr 11, 2014
Is it possible to edit hosts file in java program? I tried it but I'm getting "AccessDeniedException". I need to have permissions for it, but can i somehow set the permissions in java program for current user?
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Dec 14, 2014
I've just installed the last Java kit JDK plus netbeans and I've done my first project in Java. It is running perfect from command line<but is is difficult to execute each time from there my tests> but I couldn't run the jar file from windows with double click he jar file even I've spent 3 hour on google to find different methods (registry modifying, control panel/program running in windows, a patch file etc, ) ....
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Feb 23, 2014
I have an applet and start some process on Windows from applet. When I start this process just from another code(test), this code works fine and process runs from rt.exec() to proc.destroy(). When I use html call for applet - process runs only for 5 seconds every time (!!!) and then just alive, doesn't work, to proc.destroy(). This is really interesting for me (newbie in applets). I think, this issue caused by AccessController. I use Windows, medium Java security lever and applet is self-signed. It asks me to 'allow', applet works.Here's the code:
public String startRecording(final String filename) throws IOException {
try {
return (String) AccessController
.doPrivileged(new PrivilegedAction<String>() {
public String run() {
try {
proc = Runtime
.getRuntime()
[code]....
It's FFMPEG process, which records desktop video and writes it to file, maybe AccessController blocks access to file system.
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Jan 27, 2014
How in Java to get the current(overridden) currency symbol from the Windows?
As you know t is possible in Windows (Control Panel->Region->Additional Settings->Currency) change currency symbol to the new one.
For example default is '$' and customer change it to the '€'
And programs (Excel for example) use this new currency symbol, i.e instead of $100 you see €100.
I need emulate similar behavior in Java.
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Dec 30, 2014
I'd like to know if there's a way to embed Windows Painter (mspaint.exe) in a browser. I'm not sure it's possible with Java and if it doesn't, any relevant reference to this subject.
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May 2, 2014
In the image, the color of the frame of the window/JFrame is black. My question is that can we set the color of this frame, or is it just provided by the operating system and whatever color is default color of windows in an operating system will appear in our application?
I am talking about the frame, the boundary in the JFrame container which contains the close, maximize, and minimize buttons.
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May 3, 2015
editing Slideshow Gadget file (Win7). Unfortunately, I've no coding experience so that's why I can't find solution for it myself. What I've dreamed for is slideshow on my desktop where I can see motivational pictures that would change once per 30 mins. Unfortunately windows gadget doesn't have such option (5 mins max) and it is too small for my needs. I tried to edit file by myself but I couldn't recieve results I wanted.
#1 when I tried to add 30 mins option in scroll menu the program wouldn't even start.I changed this:
var pictureArray= new Array();
var selectArray= new Array();
var slideTimeArray= new Array(
["5 " + L_SECONDS_TEXT, 5],
["10 " + L_SECONDS_TEXT, 10],
["15 " + L_SECONDS_TEXT, 15],
["30 " + L_SECONDS_TEXT, 30],
["1 " + L_MINUTE_TEXT, 60],
["2 " + L_MINUTES_TEXT, 120],
["5 " + L_MINUTES_TEXT, 300]);
[code]....
#2 When I tried to change size of slideshow it wouldn't fit in border -->I changed this
var maxDockedWidth= 120;
var maxDockedHeight= 90;
var maxUndockedWidth= 320;
var maxUndockedHeight = 240;
[code]....
If the size of slideshow could be 534x333 px that would be perfect!
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