very wierd! eclipse does not find java on my computer?

Hello I am very new and I have a problem that has been bothering me all day today. I have been working on a ROS (robotic OS) and I am using java for part of it. The java code itself works fine, but I just updated my java to the latest java and my whole entire eclipse can not find java... even programs like minecraft do not work. I did che...

Problem with Java: Could not create java virtual machine

Admittedly I am... Brand new to Java, and am working on learning the basics etc. But for now, I just want to get it working. I recently uninstalled Java 6 to replace it with Java 7. The installation seemed fine, everything looked in order. Except I tried running a Java based exe and I keep getting the error message "Could not create...

What do I miss to run Java on my Mac?

I have just installed Java (JDK) from java.com on my Mac, knowing now that I could have installed java from my Mac. After the installation I had to search Programs for java (java didn´t show with an icon) and found Java Virtual Machine. Starting JVM didn´t give me much, except from some web pages. In my search I have read about NetBeans a...

LOG4J conflicts JBOSS&Java program

I've got a java server launched from a jar that uses log4j (RollingFile and Console appender). Alone: no problem it works. I've got a JBoss server using log4j (default install). Everything is ok when it runs alone. When I start my Java server first and the JBoss, no problem either. However when launching JBoss first and THEN launch the ja...

Can't run Java example for Selenium / WebDriver

Having a problem getting going with Selenium on Java. I'm trying to follow the example on this page: http://code.google.com/p/selenium/wiki/G ettingStarted I'm typing this: $ javac -cp . -cp ~/Downloads/selenium-2.20.0/selenium-jav a-2.20.0-srcs.jar -cp ~/Downloads/selenium-2.20.0/selenium-jav a-2.20.0.jar -g Example.java And getting this:...

Question about JAVA

Hi, I am interested in learning Java because of its cross platform compatibility. I am planing to develop a Lan-Based system and also some android apps later. My question is about this IDEs, Framework, APIs and SDK First I would like to know which is more powerful in terms of usage to develop a system and android apps. Oracle JDeveloper O...

How to disable or uninstall Java.

Java is not a required component for most computer users and with the recent security exploits discovered in Java and Oracle not rushing to fix many of the exploits any time soon many users may choose to disable or uninstall Java on their computer. This document will cover how to update Java, disable Java, and if needed uninstall Java on...

Need advice if a job in java is for me?

Hello everyone :D I am new and looking for some advice! Here is my query and background to it: Basically I can go do a few short courses in Java at a nearby college. This is what it entails: Java 1 Introduction to Java and the principles of Object Oriented Programming techniques. Java 2 Developing user interfaces using Java’s Swing librar...

Another java.lang.IndexOutOfBoundsException, but index < size

I've just ported all my arrays to ArrayList (due to my great lack of knowledge in Java I didn't know basic Array type does not have any ".add" option) in my little program and everything seems fine... except that from time to time an exception is thrown, but it contradicts itself: Exception in thread "AWT-EventQueue-0" java.lang.IndexOutO...

How to make structure in JNA?

I get this error when i run the code below; Exception in thread "AWT-EventQueue-0" java.lang.Error: Structure.getFieldOrder() on class javaapplication2.NewJFrame$APPBARDATA returns names ([cbSize, hWnd, jCallbackMessage, jEdge, rc, sParam]) which do not match declared field names ([]) at com.sun.jna.Structure.getFields(Structur e.java:872...

Java 7 support for Google App Engine Java

The Google App Engine Java overview page indicates that the Java versions 5 and 6 are supported. When starting the local development server with Java 7u4 the following error bubbles up: # A fatal error has been detected by the Java Runtime Environment: # SIGBUS (0xa) at pc=0x000000010d733a96, pid=32766, tid=140735250205024 # JRE version:...

SNMP4J.jar - java.lang.ClassNotFoundException

I'm trying to check some SNMP example, so i've downloaded snmp4j.jar compiled SNMP.java using javac -cp snmp4j.jar SNMP.java (it's OK) tried to start it using java -cp snmp4j.jar SNMP , but it reports: root@comp:~/workspace_c/SNMP# java -cp snmp4j.jar SNMP Exception in thread "main" java.lang.NoClassDefFoundError: SNMP Caused by: java.l...

Does java.awt.Robot.waitForIdle() wait for events to be dispatched?

I'm using java.awt.Robot for integration tests of my Swing application, but I'm having trouble running my actions in the correct order. How can I tell the thread that calls robot.mousePressed(...) to block until Swing is finished dispatching that event? Apparently, robot.setAutoWaitForIdle(true) does no good. Here's my demo. I expect t...

Find jvm from Java

How can I find a JVM ( java command, e.g. /usr/bin/java for mac and C:\Program Files\Java in\java.exe for Windows) from a Java application? Reason: I am running an JNLP application that should download and launch other jar. I cannot just load the other jar because it has native libraries which could not be launched as JNLP.

Java Server Example Errors

Getting these errors in some java code http://tutorials.jenkov.com/java-multith readed-servers/multithreaded-server.html Exception in thread "Thread-0" java.lang.RuntimeException: Cannot open port 8080 at servers.MultiThreadedServer.openServerSo cket(MultiThreadedServer.java:61) at servers.MultiThreadedServer.run(MultiThr eadedServer.java:22...

Java RMI NoClassDefFoundError (development on Netbeans IDE)

I'm a student, and I'm trying to write an RMI application. I have 3 separate projects: One is Server Side One is Common (include Interface and Entities to reflect with Database Structure) One is Client and I write it on Netbeans IDE. When I start server I receive a printstack error like this: Exception in thread "main" java.lang.NoClassDe...

Java 7 comes to Stackato

Stackato has supported Java from the beginning, but without buildpacks the choice of Java runtimes has thus far been limited to exactly one: Java6 (née jdk1.6) which until recently was the most widely used Java release. Now that has changed. Java 7, codenamed Dolphin, was released by Oracle in July 2011, and while its reception didn't se...

I posted something similar in another thread but I think it belongs here too

Hello everyone :D I am new and looking for some advice! Here is my query and background to it: Basically I can go do a few short courses in Java at a nearby college. This is what it entails: Java 1 Introduction to Java and the principles of Object Oriented Programming techniques. Java 2 Developing user interfaces using Java’s Swing librar...

java.lang.NoClassDefFoundError: org/apache/juli/logging/LogFactory

Seem to have a problem starting my Java app: Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/juli/logging/LogFactory at org.apache.catalina.util.LifecycleBase.( LifecycleBase.java:37) Caused by: java.lang.ClassNotFoundException: org.apache.juli.logging.LogFactory at java.net.URLClassLoader$1.run(URLClassLo ader.ja...

java.lang.UnsatisfiedLinkError: no j2pkcs11 in java.library.path in java6

I'm trying to use a eToken to sign a pdf file using a java application I wrote. I'm using a windows 7 64 bit edition with java 6.0.30. When I run the application I'm getting an exception saying Exception in thread "signer" java.lang.UnsatisfiedLinkError: no j2pkcs11 in java.library.path at java.lang.ClassLoader.loadLibrary(ClassL oader.ja...

Java- Could not create the Java virtual machine

Ive got a 64 bit windows 7, I download Java 64 bit. While it's downloading i get random boxes popping up saying "could not create Java virtual machine" When it finishes installing I cant even open it. I go to control panel and click on Java..it says the same thing "could not create java virtual machine" When I go into command prompt and t...

Java SE Runtime Environment 7 1.7.0_15 - Java Runtime Environment from Oracle. (Free)

Java SE Runtime Environment 7 enables support for running Java-powered applets and applications. This release includes fully supported JRE for Mac OS X 10.7.3 (Lion) and above. You can download the Mac OS X JDK and JRE from Java SE Downloads page. If you are running a release of Mac OS X that includes Apple Java 6, for example 10.7.3, 10...

apple releases java updates for os x, including malware removal tool

Apple has released (20 Feb 2013) updated versions of Java for OS X. About Java for Mac OS x 10.6 update 13 Java for Mac OS X 10.6 Update 13 delivers improved security, reliability, and compatibility by updating Java SE 6 to 1.6.0_41. On systems that have not already installed Java for Mac OS X 10.6 update 9 or later, this update will conf...

Executing specific CMD commands from Java Code

I have a .java classfile with a main method which produces a file "output.txt". I want to write a program in Java which compiles and runs it, so that the file "output.txt", produced by given Java class, is outputted to a specified folder. How can this be done? I can compile and run it, but I couldn't make something like a command in Java...

latest java update 7.0.21

Hi guys,Java desided they were going to update to a newer version anyway,it's not working lol,it's saying java runtime inviroment 7.0.21/java spdll is corrupt. I'm open to suggestions.Btw, I've contacted java followed their instructions (uninstall reinstall) still not working.Thanks 4 the help.

Java 7 update 15 issue

Hi, today i updated java to the latest version and although it is detected on my laptop through the java test page, when i try to launch the java control panel or java.exe, command prompt opens with loads of code then closes quickly. I uninstalled then reinstalled yet same issue. Is this something to fret about or should i investigate fur...

Jinfo,gc and gcutil give different values

I have a socket application where this is a listener and import a number of 3rd part library as below. Code: import java.io.*; import java.net.*; import java.util.*; import java.util.Date; import java.text.*; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.io.IOException; import java.sql.Connection; import java...

Tomcat versions aren't starting

Just downloaded Tomcat 7.0.26, unzipped it, ran the startup.bat file and it failed with the following error: Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory at org.apache.catalina.startup.Bootstrap.&l t;clinit>(Bootstrap.java:54) Caused by: java.lang.ClassNotFoundException: org.apache.co...

Loading jdbc driver to connect to MySQL database

I want to connect to my mySQL db with a java program.Im getting a ClassNotFoundException . I copied the mysql-connector-java-5.1.18-bin.jar file to the java lib folder and set classpath in user variables to the java/lib folder. i used the following statements to establish the connection: Class.forName("com.mysql.jdbc.Driver"); con=DriverM...

Why am i getting java.security.AccessControlException?

i am using google app engine. When i send an ajax request from my website. I get following exception: Uncaught exception from servlet java.security.AccessControlException: access denied (java.lang.RuntimePermission accessDeclaredMembers) at java.security.AccessControlContext.check Permission(AccessControlContext.java:355 ) at java.securit...

Install Anywhere USS Error

I am trying to run a pure java installer on USS, and getting the following error. Does anyone have any idea what is means? Exception in thread "main" java.lang.ExceptionInInitializerError at java.lang.J9VMInternals.initialize(J9VMI nternals.java:222) at install.main(DashoA10*..) Caused by: java.lang.StringIndexOutOfBoundsEx...

Stealth OS X update once again blocks use of Java

Apple is once again blocking the use of the Java web plug-in in OS X, reports say. The company has issued a silent update to OS X's anti-malware system which sets the minimum version of Java beyond the current Mac release, Java 7 Update 11. As a consequence, Java can't be used in web browsers on Macs until Oracle issues its next patch. Th...

Eclipse - Just uninstalled Java 1.7 (still have Java 1.6 on my machine), but now Eclipse won't recognize any java stuff

I'm extremely confused about how to set up Java on Eclipse. I don't get how classpath/system variables/etc all works. I set my Java compiler settings from 1.7 to 1.6 after I uninstalled 1.7 (I still have 1.6). But it's still not working. Any help?...

iOS Java SocketException

I'm running Java on a JVM on iOS. When I try to receive data using a POST request from a webpage, and the connection can not be established (client sided), I get the following error: java.net.SocketException: Invalid argument at gnu.java.nio.VMChannel.getpeername(Nativ e Method) at gnu.java.nio.VMChannel.getPeerAddress(VM Channel.java:471...

Apple issues new Lion, Snow Leopard Java updates

Apple has posted two new OS X Java updates: one for Lion, Java for OS X 2012-005, and one for Snow Leopard, Java for Mac OS X 10.6 Update 10. In both cases the patches now prevent Java from running in an always-on state. The Java plugin is killed if no applets have been run for an "extended period of time;" in fact, if Java for OS X 2012-...

JUnit java.net.ConnectException

I'm pretty new in Java, so don't be rude ;-) I got a task to do and there are some JUnit-Tests to verify my solution. When I'm trying to run them, it takes some time and then I get the following errors: Could not connect to: : 51219 java.net.ConnectException: connect: Address is invalid on local machine, or port is not valid on remote ma...

SciTE: ClassNotFoundException in Java when using a newly added library (but not in command prompt)

I'm currently working with the Tidy class from the JTidy library provided by SourceForge (http://jtidy.sourceforge.net/). I have already added the .jar library to the CLASSPATH, and I can compile the java program in SciTE without any error. But when I try to run the program, SciTE prints out this output: >java -cp . SourceViewer3 Excep...

Java Error "Cannot Copy to the Clipboard"

I have been having an error with Java lately and I think this issue is the reason for the many Java related issues I've been having. I'm hoping someone here has an effective fix, either it be reinstalling Java entirely or modifying a file. The error is as follows: Cannot copy to the clipboard: java.security.AccessControlException , access...

Someone please tell me how can i be a excellent programmer in Core java,i must have to learn full core java with out any failure [closed]

i am new in programming. My knowladge skill in core Java is very low. But i have a big intrest in java programming. i want to be a perfect in core Java concept. please tell me how you learn initially core java? Please suggest me . Thanks & Regards -Ashutosh Singh...

Java Tools 0.46

Java Tools is a lightweight IDE for creating, compiling, executing, and debugging Java applications and applets. It includes point and click access to the Java commands, documents, directories, and files. It also includes a built-in text editor and user interface for the Java debugger. It makes learning and using Java easier. It's for the...