The Java Runtime Environment, comprising of the Java Virtual Machine and standard Java APIs.

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Allowing unsigned Java applications on all sites

Java stopped running unsigned applications one day. Your security settings have blocked an untrusted application from running. The documentation states that I can add a site to an exception ...
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11k 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 ...
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43k 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 ...
8
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2answers
9k views

Is it safe to delete Java folders from C:\Users\(Username)\AppData\LocalLow\Sun\Java

I am using a Windows 7 64-bit PC. I have many folders in C:\Users\(Username)\AppData\LocalLow\Sun\Java with names of older Java versions like: jdk1.7.0_21_x64 jre1.7.0_45 jre1.7.0_25 These folders ...
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3answers
18k 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
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1answer
7k views

Run unsigned Java applets

Basiclly the same question as Allowing unsigned Java applications on all sites, but for Java 8, where I get the pleasure of seeing this screen: Unsurprisingly, this breaks things for me. Is there ...
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2answers
43k views

Where is java jre path specified in Windows 7?

I have java installed including jre 6 and 7 on Windows 7 64-bit. When I type java -version at the command line I get: C:\>java -version java version "1.6.0_22" Java(TM) SE Runtime Environment ...
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2answers
5k views

How to give Java run time more heap space?

I am running PMD v4.2.5 on Windows 7 and it is running out of memory with the following error: Exception in thread "Thread-4" java.lang.OutOfMemoryError: Java heap space How can I configure the JRE ...
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4answers
8k views

Java not detected by browser

I have java installed on my computer, but none of my browsers seem to detect it a and I'm not able to run any applets. (Trivial, as it may seem) I've wasted a lot of time googling and trying to ...
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2answers
19k views

How do I run a program in Ubuntu using Wine that requires JRE?

I have an application that requires JRE to run on Windows. I have now migrated to Ubuntu and am trying to run the same application using WINE. However I get the error: "No Java Found". Any ideas how ...
3
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2answers
5k views

Cannot install Java JRE on Windows XP workstation (possibly due to previous failed uninstall)

My Windows XP workstation at the office had several old versions of the Java JDK and JRE installed on it. I decided to install the newest Java JDK and uninstall the older JDKs and JREs. This resulted ...
3
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1answer
347 views

How to scroll horizontally in IntelliJ IDEA under Windows?

I have a touchpad/trackpad I can scroll horizontally with (two-finger scroll) basically anywhere. Not in IntelliJ IDEA, though. Is there a way to make it work there too? (I do currently use ...
3
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1answer
4k views

How to downgrade JRE's version in Ubuntu?

Currently I am having JRE 1.6.0_20. How do I downgrade it to JRE 1.6.0_17? How can I downgrade? I'm using Ubuntu 10.04 LTS.
3
votes
3answers
852 views

Disassociate file with cmd.exe

I recently chose cmd.exe as a default program for .jar files with instant regret. How do I associate this back again with javaw.exe in the JRE? The default program check box is disabled, so selecting ...
3
votes
1answer
538 views

Unable To Successfully Use Java Anywhere (Windows 7 64bit)

This is a bit of an odd issue: (This is with JRE 7u7 32bit.) New Lenovo W530 laptop, everything is shiny. I tried to use a java applet for the first time recently (in Chrome). I got the Java logo and ...
2
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2answers
487 views

Why is a desktop Java app using an old JRE?

In trying to comply with IT policy I've (I thought) removed all old versions of Java JREs and JDKs from OSX. java -version returns 1.7.0_51 and the Java Control Panel in System Settings also reports ...
2
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2answers
3k views

Java Install Error 1723

I was working on a program in Eclipse. I went to run it, and ran into some 'unknown source' errors, so I tried to reinstall my java and ran into some annoying errors. First thing I ran into was an ...
2
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3answers
5k views

can I set an older version of java as a default for certain programs?

I have java 1.6 and 1.7 installed on my computer. I want to use 1.7 for everything except a single webapp that doesn't run on 1.7 well. Can I get some help? EDIT: On windows but I need a fix for ...
2
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1answer
145 views

JRE randomly disappears

When I start up my computer, everything works fine. However, if it runs for a while and I try to open Eclipse (which I can open fine initially), I get the "Java Runtime Environment Needed... No Java ...
2
votes
1answer
13k views

“Java returned exit code=13” when starting Eclipse

I have some problems starting Eclipse. When I try to start it, this error window appears: Does anyone have any idea of how to fix this? I am using Windows 7.
2
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1answer
325 views

Application prompts me to install JRE higher than 1.4, but I have 1.7 installed

There is a JRE 1.7 on my Windows XP machine. The java -version command says that I have 1.7.0_02. By launching an .exe file, I want to install an internet banking software that uses Java, but it ...
2
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2answers
12k views

64 Bit Windows 8.1 Failure to reinstall Java JDK and JRE

Attempting to update to jre-7u67 from 65 did not appear to work. On reattempting, installation failed with a “Access is denied” message. JDK was still there but I followed recommendations to remove ...
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2answers
4k views

MATLAB is not working because of Java

I use Windows 7 x64. I have installed MATLAB 2010a to my computer. After running only the splash screen shows up for a while then program quits. I have found an error log and the first lines of the ...
2
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1answer
1k views

Small linux distro that to run in a VM and which has JRE

I'm looking for smallest linux distro with a GUI that natively runs JRE. DSL doesn't have JRE and I don't really want to spend 15 hours trying to figure out how to install it. I'm looking for ...
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0answers
105 views

Java JRE-8u66 installer does not start

I'm trying to install Java JRE update 66 (latest update) but when I click the installer nothing happens. The process is visible in the task manager but without any function. I have could install ...
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0answers
2k views

Java 7 update 25 applet error: “Error. Click for details”

I'm unable to get any applets to work in any browser. I am 99% sure that this error happened after updating Java 7 runtime to update 25 (on OSX Mountain Lion). Some more detail on my problem: this ...
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4answers
13k views

How can I uninstall Java 7 Update 5 when I don't have the “jre1.7.0_05-c.msi” file?

Whenever I try to update to the latest version of Java, an installation of Java 7 Update 5 is detected and then I'm asked for the file, jre1.7.0_05-c.msi, which I don't have, so then the installation ...
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2answers
4k views

I can not start Eclipse anymore

Today, I can not start Eclipse anymore. It worked fine yesterday, then I got a few Windows Updates before turning off the computer. And I also updated to the latest Java RE 1.6_u20 yesterday, but ...
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4answers
1k views

Is JRE installed in Windows and Linux?

Do Windows XP, Vista, Windows 7 and all Linux distributions have Java JRE installed so end-users don't have to install it to run Java applications?
1
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1answer
2k views

Fix java version mismatch in windows

I have the 64bit version of the jdk installed on windows 7. I installed the 32 bit version of the jre as websites complained that I didn't have the java plugin. I tried in vain to get firefox to ...
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2answers
45 views

How to set a command without defining path everytime?

I have a command which is: ./keytool But I always have to go to this folder to use it: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.65-2.b17.el7_1.x86_64/jre/bin How can I just use the following ...
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2answers
5k views

About adding many sites with only different ports to Java Exception Site List

After update Java to Java 8 update 25, the Medium security level has been removed from the Java Control Panel. I am a TA and need to browse many sites from the students. These sites contain Java ...
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vote
1answer
5k views

How to install java plugin for firefox in Fedora 17 or 18

I am running Fedora 17 64 Bit, I already installed firefox with the yum install firefox, and my firefox version is 22.0 I am trying to install the java plugin for firefox. But the instructions on ...
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2answers
959 views

Cannot remove or replace the JRE

About a month ago I attempted to remove a vulnerable version of the Java Runtime Environment (JRE). Unfortunately, I didn't know there was another user logged in at the time. This caused the ...
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1answer
6k views

Should JRE 7 be kept in Program Files (x86) or Program Files in Windows 7 (64-bit)?

I have updated JRE to version 7 update 4 and JDK to version 7u4. I have two Java folders, one in Program Files another on Program Files (x86). JRE was automatically downloaded to Program Files (x86) ...
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2answers
2k views

How to install SmartSVN in Ubuntu 10.04 (Lucid Lynx)? JRE installation is suspected

I followed the instructions in How To: Install/Setup SmartSVN in Ubuntu. I followed everything and it didn't start. I also tried to update my JRE: sudo apt-get install sun-java6-jre sun-java6-plugin ...
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2answers
30k views

Changing default Java Runtime Environment from 1.8 to 1.7

I'm currently trying to change the default JRE on my computer from 8 to 7. I was attempting to fix a glitch involving the game Minecraft by updating to the JRE8 beta build, but it seems like that ...
1
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1answer
3k views

I can not start a .jar-file by double-clicking, only from command-line in Windows

I have a Java application in a .jar-file. I can start it by typing java -jar myapp.jar and the application starts, but if I double-click on the .jar-file, nothing happens. What can be wrong? How can I ...
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2answers
169 views

Java installation disappearing on Windows 7

I have installed jre version 1.8.0_51 on a 64-bit Windows 7. Some time after the installation I could not run java programs anymore, seemingly because the installation dissapeared. If I run "java ...
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2answers
204 views

apache-tomcat-8.0.22; Error occurred in initializing VM java.lang.NoClassDefFoundError : java/lang/Object

I have reinstalled JRE with latest version JRE1.8.0_45 . Whenever I try to run Tomcat :startup.bat this error occurs . Installation of JRE done with Oracle online installer and was perfect. ...
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0answers
91 views

Can you specify the JRE version an applet should run?

Is it possible to specify the JRE version a Java applet should execute in the browser? e.g. If I have Java 7u17 and Java7u72 installed (32-bit) can the applet request 7u17 to be used? Similarly, if ...
1
vote
1answer
589 views

Switching JRE version

I have JDK 1.8.0_05 64 bit, 1.6.0_45 64 bit and 1.6.0_39 32 bit versions installed on a same machine. I am using this machine for Android app development and it was working fine with Native Android ...
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0answers
130 views

Java error with kodak app

I've run out of options with the kodak development guys, so I am hoping that someone here will have an answer. We runs kodak asset management system and some machines, get this error when trying to ...
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0answers
528 views

Wrong OEM while trying to use FlashTool. (Android Rooting)

I am trying to follow this link to install FlashTool so that I can root my Micromax Canavas HD. My Dev Enviornment is Ubuntu 12.04 LTE 64 bit with support libs for 32 architecture. I as well changed ...
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689 views

MATLAB not loading- java NoClassDefFoundError

The installation itself was giving an error: java.util.concurrent.ExecutionException: java.lang.RuntimeException: data starting at 0 is in unknown format but when I deselected Aeromodeling toolbox ...
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2answers
12k views

Upgrade to java 1.7 in eclipse on mac

I'm sort of a beginner with eclipse but I want to update the libraries or build path or whatever to java 1.7 from java 1.6 and I can't figure it out. I'm a computer science student at the university ...
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1answer
330 views

JRE / Windows version compatibility

I'm creating an installer for a Java application for Windows. The customers wants to bundle the JRE with the installation (I know that's kind of frowned upon, but it's not up to me). If I bundle the ...
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1answer
3k views

Eclipse says “Access Denied” when running javaw and how to fix it?

I'm trying to get Eclipse to compile and run a HelloWorld class but it can't even do that. I have installed Eclipse x86 SDK 4.2.0 together bit with the latest JRE and JDK both in 64 bit as well. I ...
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3answers
353 views

What Version Of JAVA JRE do I have?

(System here is Windows 7) I have received this sentence in an E-Mail from higher powers... Make sure that your system has JAVA JRE 1.6 Update 7 No clue, so I looked around and found THIS PAGE on ...
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2answers
168 views

Is there a virtualization solution for OSX Lion that doesn't require JRE?

I'm trying to verify if I can get along with using OSX Lion without JRE and the possibility to run virtual machines would be the last mile. VirtualBox is Java based so that's out of the question. Does ...