The Java Development Kit (JDK) is a set of utilities that allow one to create software systems for the Java platform. It consists of several tools and libraries.

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Groovy console won't load on Windows 7 x64

I've never worked with Groovy before. I installed the executable and the latest JDK from the Java website. I set my system ENV variables JAVA_HOME to C:\Program Files\Java\jdk1.8.0_77 and ...
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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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2answers
3k views

OS X - Eclipse - WindowBuilder -> “Incompatible Java versions”

No matter what I do, Eclipse keeps saying that "Eclipse is running under 1.6, but this Java project has a 1.7 Java compliance level, so WindowBuilder will not be able to load classes from this project....
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1answer
869 views

Cannot install JDK on Windows 8

I am struggling to install Oracle's JDK7 on my Windows 8.1. I got the jdk-7u51-windows-x64.exe file from http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html as I should,...
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1answer
80 views

Should I trust download.oracle.com if my certificate does not match?

I've been getting this every time I try to download a JDK 8 update to my MacBook. First, I go here: http://www.oracle.com/technetwork/java/javase/downloads/index.html I click the download location ...
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1answer
689 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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1answer
191 views

Cannot install JavaFX SDK despite having current JDK

I want to install the JavaFX SDK and it keeps telling that it requires the current JDK to be installed, which I definitely have. Why doesn't the installation recognize my JDK? How can I fix this so I ...
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1answer
123 views

Java SE Development Kit install interrupted

I want to install Xamarin in Windows 8.1. it requires to install Java Development Kit 1.6 or above 32-bit. when I try to install JDK, I get this error message" I'm using Windows 8.1 x64. How can I ...
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1answer
25 views

How can I isolate a JPNLP (web deploy) Java version from other, legacy versions on the computer?

I have a JNLP that runs the following shortcut when installing: C:\Program Files (x86)\Java\jre1.8.0_25\bin\javaws.exe" -localfile C:\Users\akelly\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\42\...
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254 views

Debian, shell and jdk 8

I'm trying to download jdk on debian 7 using wget command wget --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u25-b17/jdk-8u25-linux-x64.tar....
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1k views

Cannot run JDK7 java in cmd, but javac works

I just recently installed JDK7 and then afterwards I uninstalled it because I couldn't run java from command line in Windows7. I tried to reinstall JDK7 after uninstalling it, but it doesn't help. ...
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462 views

Eclipse startup Error code=1?

I just downloaded eclipse-java-helios-SR2-win32-x86_64.zip extracted the zip. When I'm trying to run I get this error: Here is my .ini file: -startup plugins/org.eclipse.equinox.launcher_1.1.1....
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1answer
138 views

JDK 1.6 for OSX

I am trying to use the Java game library Slick2d. However it seems like it's bugged using Java 1.7. I've tried to find it but was unsuccessful. Is it possible to install the 1.6 JDK on Mountain Lion?...
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0answers
859 views

How to install Java 7 on Solaris 9?

Oracle states the following regarding Java 7: This version of the JDK is supported on the Oracle Solaris 10 Update 9 or later OS, Oracle Solaris 11 Express OS, and Oracle Solaris 11 OS ...
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1k views

Errors when installing jdk 1.7 in linux

When I am installing jdk 1.7 in Oracle Linux by using the following rpm -ivh jdk-7u9-linux-i586.rpm However I am getting the following errors, how can I resolve these errors and install jdk 1.7? ...
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0answers
189 views

Slow Windows Application Startup

I have Windows 8 Pro/i5 3320M laptop with 8GB memory. Java based applications such as Eclipse, Phpstorm takes about 15-30 mins to load. (i assume issue is with java apps, others work fine). I tried ...
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739 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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131 views

Run Java applications with JDK on OS X

Apple in the latest releases of OS X removed Java from default installation so for my needs I installed JDK from Oracle's website. ~ java -version ...
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0answers
115 views

How can I get back Java Preferences after uninstalling JDK 7 on Mac

When I installed Oracle's JDK 7 on Mac (OSX 10.8), Java Preferences disappeared. Now I removed JDK 7, and reinstalled Apple's JDK 6, but still, I don't have Java Preferences in Applications/Utilities ...
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0answers
97 views

Make application launcher search for apps in a particular folder?

Everytime I want to run an application with Application Launcher (Alt+F2) in my Ubuntu, I have to make a link to that app and put it in /usr/bin folder, Application Launcher won't search in the folder ...
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337 views

Java swing components are doing strange things

There is a strange occurrence with Java swing components (buttons, text, etc in GUIs) have lately been going haywire for no reason I see. Here's the three things that I've noticed happening: If I ...
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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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61 views

FireFox doesn't recognize correct Java RE

I have Win7 with FireFox 41.0.2 with a very old profile and 7 different Java instances. I can't simply delete old Java instances or the whole FireFox profile, and shouldn't be needed to. FireFox ...
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97 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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142 views

Java/JDK filesystem organization on OSX (Mavericks)

If you install the JDK via the Oracle DMG, you get content put under /Library/Java/JavaVirtualMachines/jdk1.7.0_xx/Content/Home/bin as well as /System/Library/Frameworks/JavaVM.framework/Versions/...
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115 views

Installing jdk 1.7.0 java -version not working

I have installed java jdk, following the steps as described here but the problem is when i do which jav it gives me the output /usr/bin/java but when i do java -version it says bash: /usr/...
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382 views

Where to find a zipped/tarred JDK 6

Ok, I concede. I have been looking in vain for a zipped and tarred copy of any later version of Oracle's JDK 6 for Solaris SPARC (32-bit), but all I can find is the shell scrip that "installs" it. ...
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0answers
448 views

Eclipse Juno can't run any Java project

I use Eclipse Juno - Eclipse IDE for C/C++ Developers , and I can't run any Java project , mean even there is no "Run" option . For example when I right click on the Main class I just see (no "Run"...
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0answers
854 views

How to configure Chromium's Java plugin so it uses an existing JDK in the machine

This exact same question was asked here, but the OP was asking in regard to a Windows system. I am running Linux Mint 14 "Nadia" - KDE (64-bit). The answer @Kalyan Akella provided to that question ...
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1k views

Installing JDK 1.4.2.19 on Windows XP SP3

I am currently trying to install JDK 1.4.2.19 on a completely clean (no other software) Windows XP SP3, which results in the error Error reading setup initialization file When doing the same ...