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

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Unable to install Java Runtime Environment (ver 7 update 65)

Background: I am trying to setup PyDev on Eclipse Luna. I have managed to download and installed Eclipse Luna. But on start up, it said I need to download and install latest Java Runtime Environment. ...
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3answers
35k 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 ...
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1answer
4k views

DbVisualizer Error “No JVM could be found ..” and “please define EXE4J_JAVA_HOME”

On this download page i downloaded dbvisualizer.zip and unpacked it to a folder. Starting the dbvis.exe i get this error: No JVM could be found in your system. Please define EXE4J_JAVA_HOME to ...
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2answers
13k 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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12 views

Java JRE or JDK silent Update

Is there a way to Auto Update JRE or JDK if an update is available? Background periodically JRE or JDK says an update is available, I would like to do this check using Task Scheduler on system boot ...
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1answer
435 views

Windows 8 Java install is interrupted

Every time i attempt to install JRE 7u9 the installer gives me an error saying that java ran into an unexpected error please try installing later. Whenever i try I get the same error. I attempted to ...
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101 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 ...
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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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71 views

What is java virtual machine and what does it have to do with Java?

I was trying to install eclipse on my Macbook Air. When I run the installer I get this message There seems no official page dedicated to JVM like other Apps. When I search "install jvm" I was lead ...
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270 views

how to install IBM java on linux

I have downloaded jre pack from IBM site. downloaded file name is ibm-java-jre-7.1-3.1-i386-archive.bin. Not sure how to install this. I couldn't find instructions on site. I can't extract it or just ...
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1answer
562 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 ...
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178 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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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 ...
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4answers
14k 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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3answers
5k views

Can not open “.jar” file in windows 8

I downloaded a jar application named Need for speed most wanted. I double clicked on the jar file icon, however it did not execute. I checked I have jre installed in my windows 8 (64 bit) machine in ...
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51 views

How can we deploy java.policy to <JAVA_HOME>\lib\security

for example, our user workstations are using java 8 update 51, the java is installed at C:\Program Files\Java\jre1.8.0_51\ There is a file aka java system policy file -> C:\Program ...
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2answers
57 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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1answer
90 views

Why do jre7 is named as jre7 in the installation folder instead of jre1.7 while jre1.8.0_60 is as jre1.8.0_60?

I would like to know the reason for this. There must be a specific reason for the deviation in these naming conventions right? But, in use are both the versions are similar?
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2answers
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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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2answers
534 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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1answer
894 views

Update Debian8 JRE 1.7 => 1.8

The OpenJDK website reports installation is a simple one line operation. Debian/Ubunutu is specifically referenced in the instructions. http://openjdk.java.net/install/ sudo apt-get install ...
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1answer
38 views

Possible to change JRE versions via command line?

We are running into an issue where we must have two concurrent JRE versions installed for a program that doesn't provide backward compatibility. Is it possible to disable/enable a JRE version via the ...
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3answers
47k views

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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2k views

Oracle JRE 7 and 8 both will not install on previously Javaless win7

Simple question I thought I'd never have to ask, since I've done it hundreds of times before: How can I install JRE? I have a Win7 x64 Pro box with no Java environment, running as an admin user. I'm ...
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16 views

How to best setup PC or Mac to access a website that requires older JRE?

I have a website I need to access that requires JRE 1.5.0_11. I'm looking for the best solution to be able to load that particular website using this old Java version without cluttering my system or ...
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2answers
313 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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64 views

Add websites to JRE8 Java Web Start exclusions list unattendedly (JRE8)

In JRE8, applets on some sites don't start until exception added for these sites: My question is, how to change these setting during or after silent install to allow browser applets from sites we ...
4
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1answer
709 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 ...
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107 views

Java Plugin Missing in Chrome [duplicate]

I have JRE installed on my PC, however in chrome Java plugins are missing, it was working fine, since today, Java plugin is missing from Chrome browser. I have installed JRE, but problem still ...
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1answer
197 views

Running jar file on Windows - Prompt user to download JRE

On OS X, when I try to run a .jar file, the system would ask me to download Java Runtime Engine if I don't have it installed, which makes sense. However, on Microsoft Windows, that doesn't happen; I ...
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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.
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1answer
8k 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 ...
6
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2answers
49k 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
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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1answer
673 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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3answers
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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1answer
1k views

Unknown Java error: Warning: Unable to load Java Runtime Environment

I am getting the following error dialogue when I want to run a program. The program has previously worked and it is giving this error all of a sudden: Warning: Unable to load Java Runtime ...
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2answers
11k 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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4answers
9k 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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1answer
98 views

Chrome doesn't recognize that I already have Java installed

I've installed the latest JDK which also installs the JRE (1.8.0.25) The paths all seem to be set fine and Eclipse runs just fine. But my browsers do not recognize that Java is installed and want me ...
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78 views

java jre installer goes into “stealth mode”

Lenovo T61 running Windows 7 Prof. No java installed as per Control Panel>Programs, javare, Total Uninstaller, etc. Typing "java" at the CLI returns "not recognized". No java in c:\program files. No ...
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3answers
867 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 ...
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0answers
95 views

JRE 7 VS JDK 7 (The jdk seems to have priority over the jre)

So I installed the JRE 7 for Minecraft and the JDK 7 for programming and when I'm not programming I want to play some craft but it seem's that having both the JDK and JRE conflicts and my Minecraft ...
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1answer
2k views

Java JRE: Setting default heap size

I'm having trouble with Java on a virtual server, it always gives me the following error: # java Error occurred during initialization of VM Could not reserve enough space for object heap Could not ...
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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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1answer
621 views

Java version not recognized when JAVA_HOME defined for a particular USERACCOUNT

I have been struck with problem on my development box. I have JRE6 on my system and NO ADMIN RIGHTS. Used this command to add user variables rundll32 sysdm.cpl,EditEnvironmentVariables I have ...
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1answer
456 views

Why is Java 8 executed under Windows 8 even though Java 7 is pointed at by the path environment variable?

I have my path environment variable set to contain my Java 7 bin folder (C:\Program Files\Java\jdk1.7.0_55). Printing the path variable to the console indeed confirms that no other Java\bin folders ...
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3answers
46k 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 ...
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3answers
6k 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 ...
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1answer
684 views

How can updating the Java Runtime fix page freezes in IE on a website that has NO Java Applets in it?

We have a product written as an ASP.NET website deployed at over 70 sites. Recently, one site reported an issues where IE8/9 browsers would hang at certain post-back points, and would require the ...