Widely-used object-oriented programming language, emphasizing portability.

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165
votes
7answers
43k views

How can I prevent Ask.com Toolbar from being installed every time Java is updated?

As many are painfully aware of, Oracle continues to not only bundle the Java installation with the useless Internet browser toolbar from Ask.com, but also enable its installation by default. In ...
128
votes
6answers
99k views

Disable Java Plugin in Google Chrome?

This is the second time I've had a drive-by executable installed on my machine using the following: Google Chrome 6 (latest) Windows 7, UAC on This happened while I was browsing for images to add ...
89
votes
4answers
180k views

How do I install the Sun/Oracle Java SDK on Ubuntu?

Since 11.10 Ubuntu does not provide the sun-java-jdk, how do I install it?
85
votes
9answers
194k views

How to stop jucheck from running? Java won't remember “Check for Updates Automatically” setting

I've installed Java on Windows Vista, and every day I get a Vista security warning asking me if I want to run "jucheck". Apparently this is the Java automatic updater. Well, I don't want it to run ...
56
votes
0answers
160k views

How do I get Java support on Google Chrome in Linux?

Is there a way to run Linux Google Chrome with Java support?
51
votes
9answers
60k views

How do I switch between Java 7 and Java 6 on OS X 10.8.2?

I am using Java SE 7 to program simple games for windows and mac, but I have to switch to java 6 to run games such as Minecraft on my computer. This used to work just fine before I updated to Mac OS X ...
35
votes
5answers
20k views

What should I do about com.apple.quarantine?

I've downloaded some .jar files from the internet and want to use them under Mac OS X. But the OS seems to have tagged them with the extended attribute com.apple.quarantine (no indication of this ...
32
votes
4answers
3k views

Can I permanently prevent Java security updates from installing Yahoo Toolbar?

Each time I get a Java security update, I have to remember to untick the box to install the yahoo toolbar browser plugin that they've decided, for some mad reason, is an important security feature of ...
25
votes
4answers
18k views

Can you configure Windows to open JAR files like ZIP files without a 3rd party tool?

I'd like to be able to examine the contents of a JAR file without having to install Winzip or some other tool and without having to rename the file. Windows Explorer can open ZIP files just fine; is ...
21
votes
9answers
47k views

How to disable jusched.exe on Windows 7 64-bit?

I have recently purchased a new laptop from an OEM with Windows 7 64-bit. This system came pre-installed with (among other stuff) the Java Runtime Environment (64bit). This has put the "jusched.exe" ...
21
votes
3answers
47k views

Java Control Panel does not show Update tab on Windows 7 x64

I'm running Windows 7 Professional x64. I've installed JDK 1.6.0u25 in the 32-bit version first, and the 64-bit version on top. The Java Control Panel does not show anything about updates; I can't ...
21
votes
2answers
28k views

Running Java7 in Chrome for Mac OS X (requires 64bit?

My home banking system requires Java for logging onto the bank - see https://www.nemid.nu/ for a description of the system (in Danish only). This worked fine in Chrome under Mac OS X until recently ...
20
votes
5answers
16k views

Windows 8 & Java Development

I'm considering to upgrade my PC to Windows 8, but I have one concern though. I haven't yet found any "confirmation", that the JDK and Eclipse will work on Windows 8. Have anyone tried to ...
20
votes
3answers
10k views

Java update “Failed to download required installation files.”

On my Windows 7 machine the Java update consistently fails with this error message. (edit: The same thing happens on Windows 8). This seems to a common problem, does anyone have an insight into ...
19
votes
2answers
149k views

Where do I download Java development binaries (JDK) for Windows 7 64-bit?

I am trying to install a Java development environment on Windows 7 64-bit, but I am unable to find a suitable install. Is there one available?
17
votes
2answers
9k views

Windows 7 - How to pin a .jar to the taskbar?

I have a .jar that I run frequently, and I'd like to pin it to the taskbar. I've tried pinning the .jar itself, and I've tried pinning a .bat file that has the command to run the .jar, but it doesn't ...
17
votes
7answers
94k views

Java plugin doesn't work in Chrome — how can I fix this?

This used to work fine until a week or so ago, and I am not sure what has changed since then. I have just uninstalled what seems to be all the JVM stuff on my machine and reinstalled with the latest ...
11
votes
5answers
13k views

Removing Java from OS X Lion

OS X Lion ships without Java now. Installing it is not very difficult - however, our product relies on Java so we need to test the scenario of not having Java installed. Once I've installed Java, is ...
10
votes
5answers
2k views

Does Android or Java use more power since it's running on a virtual machine?

Since Android applications run on a JVM (Dalvik VM) which is basically a virtual processor, and every virtual instruction has to be mapped to the underlying chipset's native instruction, does this ...
10
votes
2answers
6k views

What is the task “java” (parent process “launchd”) doing on MacOS X?

I have a process called "java" showing up in my Activity Monitor that uses a good amount of CPU (4 - 8% average, 20 - 80% on occasion). It reports that "launchd" is its parent process. Any idea what ...
10
votes
1answer
885 views

How to “jail” Java applications in OS X?

Is it possible to "jail" Java applications? My bank has an applet that requests "unrestricted access" to my computer. That makes me feels very uneasy. There should be a way to tell the java ...
9
votes
1answer
17k views

How to force Java to use IPv4 instead IPv6?

My Java browser plug-in is no longer working. When I open a page that has a Java element, Java cannot connect to the server. After investigation, I found that Java was trying to use IPv6, while my ...
9
votes
5answers
77k views

How to disable the Java “Security Warning” popup?

Is there a way to disable this Java Security popup? I only use sites on my intranet and each page is home to 40+ applets that generate a new ID with each load. Because of this, every time the page ...
9
votes
1answer
9k views

sorry, you must have a tty to run sudo

I had already asked this question in Stack Overflow, but I've been asked to post it here. So doing the same. I ran this command using my java program- sudo -u <username> -S pwd I got this ...
8
votes
4answers
10k views

How to know that Java is installed in a Linux system?

I am using Ubuntu. How to know if Java is installed ?
8
votes
6answers
6k views

Does Snow Leopard provide Java 6 for 32-bit machines?

There has been some speculation that Apple's Snow Leopard would finally include a version of Java 6 that works on 32-bit Intel hardware. Now that the OS has been released, can anybody confirm whether ...
8
votes
1answer
5k views

How can I set environment variables for GUI apps in OS X Mavericks?

I've been struggling to get an app to run in OS X Mavericks. I finally was able to get it to run by drilling into the .app bundle and running the shell script directly. It seems that JAVA_HOME needed ...
8
votes
4answers
3k views

Zombie process using 100% CPU

A zombie process, which should not be using any resources (RAM and CPU), is hogging up an entire core on my 8-core 64-bit Ubuntu 11.10 Desktop installation. This is the output of ps -el|grep Z: F S ...
8
votes
6answers
42k views

SQL Developer Error Messages: “Enter the full pathname for java.exe” and “Cannot find a J2SE SDK installed at path”

Yesterday, I downloaded SQL Developer 3 with SDK and was able to use it just fine. After shutting down my PC last night and booting it up again this morning, every time I try to run it, I get this ...
8
votes
4answers
11k views

Java 7 update issues

I have been trying to log into a work presentation for three days. The site keeps prompting me to download Java 7u6, but when I follow the prompts it comes up with an error message reading: ...
7
votes
2answers
21k views

Java 1.6 on Mac OS X 10.5?

I'm running OS X 10.5.8 on an Intel iMac and don't have any immediate plans to upgrade to Snow Leopard. Am I able to upgrade Java to 1.6 somehow? The release notes on Apple's website for Java are ...
7
votes
4answers
3k views

in Windows command line: How to know the path of a command?

I have some program in many places (it is the java command).. I am starting this command from CMD. the problem is, I need to know exactly the path of the java command being run.. (If you know unix, I ...
7
votes
3answers
25k views

How to uninstall Java SE from the command line

Oracle states that the Java SE installer is built using MSI, but the help page, rather unhelpfully doesn't list uninstall options. I need to do a command line uninstall, and I can't figure out or ...
7
votes
1answer
1k views

netbeans (java) shows empty window in tiling window manager (awesome wm)

I use the "awesome" (tiling) window manager (with default config) and want to run netbeans (java app). But the window is completely grey. The installer window was it too, so i installed under KDE. I ...
7
votes
4answers
17k views

What is the path for JDK on Windows 7 64-bit?

When I work with the JDK, it says that javac is not recognized as an internal or external command. What shall I do? What is the path for jdk1.6.0_21?
7
votes
2answers
7k views

Alternatives to Oracle JRE

I would like to uninstall as many Oracle products from my computer as possible because I don't like that company. However, I require Java for some of my applications, e.g. Eclipse. What alternatives ...
7
votes
1answer
357 views

Identifying lost physical memory

I am having issues with a server running out of physical memory and I'm having troubles discerning whether it is from my application's Java process or something else on the server. Let's take the ...
7
votes
1answer
2k views

No Java Applet support for Mac OS-X on Chrome 10.7.5 after 2012-006 update

Since the 2012-006 update to Apple Java, the Java Preferences pane has disappeared. Apple says that you install the latest version of Java from Oracle in order to reinstate support for Applets. But ...
6
votes
4answers
3k views

Poor Flash performance on Mac OS X?

I've been using Mac OS for almost 3 years now. What I have noticed couple of months ago, and what annoys me more and more over time, is that any Adobe Flash applications, content or adverts on website ...
6
votes
6answers
5k views

Why is java -version returning a different version to the one defined in JAVA_HOME?

My JAVA_HOME is set to C:\bea\jdk150_10\bin (Java 1.5). However, when I run java -version I get the following: java version "1.6.0_22" Java(TM) SE Runtime Environment (build 1.6.0_22-b04) Java ...
6
votes
2answers
5k views

Auto-restart process on crash [duplicate]

I have a Java server process which runs native code and the possibility of the entire process crashing due to a problem in native code is always there. Is there any mechanism offered by *nix operating ...
6
votes
2answers
7k views

Which trusted root certificates are included in Java?

Which trusted root certificates are included in Java, specifically Sun Java and IBM Java? How can I get the list myself? Does Java on Windows use certificates from operating system?
6
votes
2answers
35k views

Uninstall Java on Mac OS X?

I'm working on a trouble shooting document for some desktop software that runs in Java. One of the last resort steps is to completely uninstall and reinstall the Java runtime. In Windows XP this can ...
6
votes
2answers
4k views

Microsoft JScript compilation error

For the past month until now, I'm getting the follow dialog from time to time. Probably few times a week. I'm running Windows 7 Ultimate x64 SP1 with all latest updates, and Java 6U29 (1.6.0_29-b11) ...
6
votes
3answers
12k views

Find out what program runs in the java.exe process

I have a problem: always when my computer starts, there is a java.exe process listening in the port 7676. I want to find out what it is to be able to delete it. Is there any way that I can find that ...
6
votes
3answers
9k views

How can I set one browser to use JRE 1.5 and another to use JRE 1.6?

I think this has to be a common issue, but I haven't found any clear solution. We have several products that are accessed via a browser (IE 7) with JRE version 1.5. We now need to be able to support ...
6
votes
1answer
6k views

ClassNotFoundException returned for all plugins

I am trying to use a Java applet (any Java Applet), but I always get a messages saying "Error. Click for details". When I do so, the pop-up says: Application Error ClassNotFoundException ...
6
votes
1answer
415 views

Why can't I start Eclipse and Minecraft at the same time?

I'm running Java SE Development Kit Update 25 (64-bit). It appears that I'm unable to run both Eclipse and Minecraft at the same time. This is really really weird, since I can easily start two ...
5
votes
3answers
3k views

Wrong java -version being reported

I am running Windows 7 Professional x64 and have the following Java versions installed: x64 C:\Program Files\Java jdk1.6.0_24 jdk1.7.0_04 jdk1.7.0_07 jre6 jre7 x86 C:\Program Files (x86)\Java ...
5
votes
5answers
16k views

install sun java 6 and sun java 7 side-by-side on linux (fedora 16) using rpm

This is what I would like to achieve, but I'm failing (I'm a newbie in Linux). I have a Fedora 16 box (64 bit) and would like to install multiple versions of oracle java (java 6 and java 7 for the ...