I don't know if it is the right place to ask, if not tell me I will migrate my question elsewhere.
I am using OSX (Maverick) and I am trying to install the JDK 7 in order to use javaFX. So I downloaded the .dmg package from oracle and when I double click on the package, I get the error message can't found mountable file systems. In the documentation I found this alert:
If you download Java 7, you will not be able to run Java content in Chrome on Mac OS X and will need to use a 64-bit browser (such as Safari or Firefox) to run Java content within a browser. Additionally, installing Java 7 will disable the ability to use Apple Java 6 on your system.
So how can I properly install the JDK 7? and Is it dangerous to install it? Could it mess up all my settings, knowing that I only want to use the JDK 7 to run some java project ?
I believe the error message you are getting just indicated a corrupt dmg file.
Try downloading and installing it again and it should work fine.
So how can I properly install the JDK 7?
You can only install the 64bit version of Java 7, the only real downside is that it will not work with things like the crome browser, you can install it the same way as you first tried, download and install it from here: JDK Download
Is it dangerous to install it? Could it mess up all my settings
No, installing the JDK should not make any noticeable change, even if you run apps on it instead of your previous JDK/jar, they should still work. If you have older JDK's installed you can still use/select them in an IDE. If you do use crome then it should continue to work as normal using the existing/old JRE/JDK that you have installed.
knowing that I only want to use the JDK 7 to run some java project ?
The Java 7 JDK is backwards compatible, meaning it should run all existing java apps.
If you were worried about swapping between Java 6&7 then this thread may help: https://superuser.com/questions/490425/how-do-i-switch-between-java-7-and-java-6-on-os-x-10-8-2
You can download on another system. And unzip the contents to a folder. Then you can copy that onto your Mac and try. I guess that is what he meant by the folder.
Related
I've been working with Java for a bit now and the JDK/JRE version has given me quite a bit of trouble lately. I am developing using the Intellij IDEA IDE and it of course uses the latest version of the JDK, 14. However when I attempt to execute software compiled with JDK 14 outside the IDE, I get an error that the JRE isn't new enough to run this software. So I updated Java on my computer and another machine and attempt to run again without any success. After some digging, I tweaked my machine to use the JRE included in the JDK 14 which is compatible.
However it is kind of odd that I had to do that, one would think that the latest version of java should of been enough to run applications made with the latest version of the JDK (14). Right now Java is version 8 build 251 and says there is no newer update available. If JDK 14 is out for a while now, why would they not update the version of Java they ship?
The problem is partially solved, as only the machine I am using for development is capable of executing the created applications. Other people I've sent them to have been unable to run them, despite having the latest version of java. Also it is a pain to get the latest JDK, especially when having limited experience on how to get rid of old versions, change path point to the latest version, get the right package (open/oracle JDK) and do that for windows and several distrubutions of linux. What is going on? Did I get Java from the wrong place and everyone else as well? Why are oracle doing this and why are there no java updates since clearly there exists a newer version?
Starting with Java-11, separate JRE does not exist anymore. In other words, if you are using Java-11 or above, you should care about JDK only.
You should uninstall JRE-8 from your machine and make sure your JDK-14 bin folder in the PATH variable. Some application even requires JAVA_HOME to work and therefore you should make sure that your system has an environment variable called JAVA_HOME and its value set to the root folder of JDK-14 (i.e. one level above your JDK bin).
Q: What should my clients do to run my application compiled on JDK-14?
Ans: Your clients must install JDK-14. Also, check this thread for some alternatives.
You're confusing how IntelliJ or JDK are used on the OS. IntelliJ, now, often comes with its JDK binaries (but even this can be configured, IntelliJ can be configured to use any JDK/JRE build you'll provide to it); however, if you run your Java application out of IntelliJ, most likely you're using Java installed locally on your OS, which might be referenced via your JAVA_HOME environment variable.
I'd suggest to:
Check java -version in your shell (and hence you'll see what JVM instance your OS spins up when you run a Java application);
Check where java (on Windows, or which - on Linux) in your shell, to see all the Java binaries available on your OS.
Try to uninstall Java SE Development Kit and Java JRE(if you have both in your machine) and reinstall both again, JDK and JRE both, I am sharing my google drive link where you can find the latest version of both JDK and JRE and when you are done installing, add there bin folder path in the Environment Variables of your machine.
Im quite a newbies, this is what happen. For the first time, i installed jdk 8 to run jaspersoft ETL. after doing some development, i want to test run the ETL build on a server but it seems that the server is using the java 6 so i can't run it. Even a simple java program like hello world can't be executed (if compile with IDE using jre8). i can't install java 6 on the server since they wont give me permission. so im using the java compliance level setting to rebuild the ETL. i installed jdk 6 into my computer and configure the compliance level but it seems that whatever i do, the program wont build. so i figured there is maybe a conflict between java 6 and java 8 on my computer.
(here is actually my problem)
So i uninstall all the java version i have using the traditional control panel method. then i reinstall jdk 6 but during installation a message pops up saying "newer version of java already found" (something like that). i check on my Program Files/Java folder under C:, only jdk folder exist but no jre. i try uninstall and install it again but still have the same issue. Why do it keep saying that theres already a newer version of java found when im already have uninstall everything.
I already remove the registry using this method: https://java.com/en/download/help/manual_regedit.xml
but still got the same issue
The version is still exist because your operating system using it.
Fixed it. i install the troubleshooting software from microsoft for this kind of issue. got it from here: https://support.microsoft.com/en-us/help/17588/fix-problems-that-block-programs-from-being-installed-or-removed
I tried to download Java on my laptop (which has windows 10) but i keep getting a 1603 error. My computer used to have windows 8.1 and it did not work back then either
I appreciate any advice to solve or work around this problem
I have had this problem. I was able to fix it thanks to a co-worker. The problem started happening after I installed HP Unified Functional Testing (UFT, aka QTP). Installing this product changes the Windows environment variables used by Java. He told me the following: "So change the names of JAVA_OPTIONS, IBM_JAVA_OPTIONS, JAVA_TOOL_OPTIONS to something else (both in system and user variables) and delete any Java folder(in Program Files (x86) or Program Files) which gets installed despite the error. Restart the system and then try installing Java."
Actually, all I did was rename the environment variables and run the installer. This worked.
My answer is not related to win 10, but might help someone who is having similar problem in windows 7 machine and not able to install jre 32 bit version.
the work around to this is once you downloaded the jre, copy the path "C:\Program Files (x86)\Java\jre1.8.0_121\bin\javaw.exe" and paste it under java runtime environment settings which is found -Java Control panel>java>view
I think you downloaded the wrong version. If your laptop support x64 bit software you should download Java 1.8 x64 version.
Here is the link.
https://www.java.com/en/download/manual.jsp
I had this problem for a month now. I tried everything on my windows 8, but I couldn't get the latest java on it. When I tried to install java on an empty computer, the 64 bit version did not go through (error 1603) and I realized the problem didn't come from an old java install and I install 32 bit. it worked on the new computer with windows 7 and on my computer running 8.1.
note: I had deleted all the java versions before going through with it.
To fix java 1603 error you have to follow few simple steps.
First of all remove all old java version.
Then remove some windows update file which might be reason of this
error. Like KB2918614 update.
After that download and Install latest version of java and activate
java in browser. Now everything will be fine you can test the java
version on java website...
For explained and easy solution to java 1603 error follow this link: http://protechguides.com/java-error-code-1603-solved/
I encountered this error on Windows 8.1 and when I checked with Oracle web site, they said that is is not yet resolved, and under investigation. They also showed a link for off-line installation as an alternative arrangement. However, upon investigation of my system, i found out that the available space in C drive was only about 20 MB or so. I cleared my system and provided enough space. When I tried with the extra space, I didn't encounter any error. May be, you could try with a better free space...
First you should close the browser because if any webpage will use Java, it will cause conflict. Then do custom installation, i.e. install in some other folder other than default folder and point environment variable to newly installed Java location. It will resolve your issue.
Recently I'm studying Java. I had no real troubles while building normal java files to .class and execute them, but, when I started a bit with applets I haven't been able to run anything.
Before I had started Java, as developer I had already a lot of development tools (Eclipse, Visual Studio, CodeBlocks and others). So, basically, I already had JDK but downloaded it again to get updated to 1.8.
Now, I have also JRE 8 and there are no troubles in using javac.exe and java.exe to build and execute, but, after building the .class file of applet, when I load the html page, I got an error which strongly recommends me to upgrade JRE.
Just to translate it:
Current version of Java is obsolete.
Upgrade (recommended choice)
Block
Later
If I do the update, it gets me to this page http://java.com/it/download/index.jsp), but, it's the download link of JRE 1.7. As much as I know, JDK 1.8 is not beta (it's accessible a 1.9 preview) so why shall I use 1.7? Indeed, after downloading and installing, when I try to run the applet, the message above is shown again.
Is actually possible to install JRE 1.8 on Google Chrome?
I resolved it. It wasn't easy since it wasn't a real trouble of java.
I had effectively Java 7 version 55 and Java 8 (but also 7-45 and 6). Java 8 was 64-bit while Java 7 was 32.
Google Chrome (32-bit browser) used so the last version it could use. According to Oracle, it's recommended to remove older versions of java (because of security) so I removed everything but the 8, and then switched to 64-bit browser (Chromium). I left older JDK installed for compatibility development reasons.
I am using Ubuntu operating system with Java version 1.7.0_15 (Iced Tea). I am unable to access the Java web start application. Every time I start it I get message that Java web start requesting JRE 1.7 and then says that it is unable to install so manually install and then it failed to install the JRE. I do not know what to do.
Here is my java version
Here is few important information
1. I have validated JNLP file using JaNeLa and there is no error.
2. Ubuntu is opening Application with JRE 1.6 perfectly fine.
3. On Windows every version is running perfectly fine.
4. I have tried with deployment tool kit but the always redirect me to the Sun page to download the linux version of JRE and even after installing that it again redirect me to the download page.
Please let me know if I can provide more information.
So finally after working whole day I have found the problem with my system. I am not sure why my question got -3 but it was valid question. The problem was with the Java plugin in the Firefox browser. Although I have installed jdk 7 on my machine but the firefox plugin was still pointing to the jre6 so giving error. So I have to manually create the link for the jre 7 in my machine
ln -s /usr/lib/jvm/<<location of jre 7>>/jre/lib/i386/libnpjp2.so ~/.mozzilla/plugins
Then I restarted the browser and make sure that I have the latest plugin and it started working, So it was not the java installed but it was firefox plugin.
Just FYI, oracle has stopped it support for java plugin for linux due to some licensing so you have to install it manually. Thanks
You can check the installed plug-in by typing 'about:plugins' in your address bar of firefox
IMHO OpenJDK 7 is not a JRE 7.
You may uninstall it before install oracle jre. Otherwise you have to use sudo update-alternatives to define the default java version
See https://askubuntu.com/questions/67909/how-do-i-install-oracle-jdk-6