I want to install the JDK in cygwin on my windows machine. I am downloading the linux version of JDK from oracle site using wget command. Here is the list of commands I am running to install JDK:
wget http://download.oracle.com/otn-pub/java/jdk/6u31-b04/jdk-6u31-linux-x64.rpm.bin
chmod a+x jdk-6u31-linux-x64.rpm.bin
./jdk-6u31-linux-x64.rpm.bin
All these instructions are same as suggested by Oracle for installing JDK over here but I am getting the following errors:
Firstly, those messages indicate that what you are trying to execute is an HTML document! In other words, the download has failed and given you an error page rather than an installer.
However, assuming that you succeed in downloading the (Linux) installer, it is unlikely that it will install properly, and there is about ZERO chance that the installed tools will run. Applications that have been compiled for Linux don't run on Cygwin.
What you need to do is to download and install the JDK for Windows, and then tweak your cygwin profile a bit. This page explains: http://horstmann.com/articles/cygwin-tips.html.
(If you Google for "java cygwin" there are various other tips for making Java work from Cygwin. However, in my experience there are a few rough edges ... due to the fact that the Windows Java utilities expect to have been called with windows-style arguments, pathnames, classpaths, etcetera.)
Related
On Fedora I installed (or at least tried to install) JDK-18. I rebooted my laptop and wanted to check if it succeeded. I used java --version, but it said bash : java : command not found.
Well all that I will write is subjective. It all depends upon how did you install java in Fedora. If you downloaded the jdk distribution and unzipped it to some folder. Then in your .bashrc, you need to provide the path where the binaries are available
export PATH=$PATH:/path/to/java/installation/folder/bin
You can also look at sdkman
https://sdkman.io/
This is a nice tool to manage your JDK(s) regardless of Linux distribution you are using. (disclaimer: I have no affiliation with sdkman - i find this tool very helpful)
Could someone please let me know the steps to install Java on a Mac.
I did brew install java
I get this
Warning: openjdk 17.0.1 is already installed and up-to-date.
To reinstall 17.0.1, run:
brew reinstall openjdk
If I do java -version, I get this.
openjdk version "13.0.8" 2021-07-20
If I have navigate to /Library/Java, I have 2 empty directories.
Where is java 17 installed??
In 2023, even if you can use just brew..
brew install openjdk#17
Java will be installed here:
/usr/local/opt/openjdk#17/bin/java
For the system Java wrappers to find this JDK, symlink it with:
sudo ln -sfn /usr/local/opt/openjdk/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk
...give a try to sdkman, it's far better than brew
curl -s "https://get.sdkman.io" | bash
then open a new shell and try list to see what you could install ;-)
sdk list java
At time of writing you could use:
sdk install java 17.0.4.1-tem
Java will be installed here:
/Users/freedev/.sdkman/candidates/java/17.0.4.1-tem
Java doesn't mind if you install multiple versions. This is often required; java is not backwards compatible (it tries to change little, but e.g. the java8 to java9 transition broke a ton of stuff, much of it needless and much of it not reasonably expectable or fixable by libraries and apps, so a bunch of java apps and libraries only run on java8 - just an example).
So, yes, you have installed JDK17. Also, yes, if you just run java without specifying which one you want, you so happen to get java13 here.
To see all installed javas, you can run:
/usr/libexec/java_home -V
to 'override', you can use something like (depends on which shell you're using on your mac):
export JAVA_HOME=`/usr/libexec/java_home -v 17`
(the backticks mean: Run this then take the output of it and treat that as the 'value' of the expression. here, assign it to the JAVA_HOME env var. -v 17 requests a path to java 17. The -V option lists all and is meant for your eyeballs, not for scripts. The -v option is mostly for scripting, and that's how we're using it here).
JAVA_HOME decides which java is used by some things, but the java you get when you just type java is /usr/bin/java, and that executable is actually just a wrapper that picks a java to run from amongst all installed versions. It uses JAVA_HOME to decide which java to actually run. There are wrappers for all the common commands (javac, too). You can always run e.g. which javac to see what that actually runs; you probably see /usr/bin/javac. Everything in /usr/bin is one of these wrapper thingies that looks at JAVA_HOME and then runs the binary it finds there.
To specify version 17
brew install openjdk#17
Later I add create a link:
sudo ln -sfn /usr/local/opt/openjdk#17/libexec/openjdk.jdk \
/Library/Java/JavaVirtualMachines/openjdk-17.jdk
And use jenv to control which java version to use
To used the version installed by homebrew rather than the one installed by the OS you can get detailed information from homebrew by typing
brew info java
Currently it states
For the system Java wrappers to find this JDK, symlink it with
sudo ln -sfn /opt/homebrew/opt/openjdk/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk
openjdk is keg-only, which means it was not symlinked into /opt/homebrew,
because macOS provides similar software and installing this software in
parallel can cause all kinds of trouble.
If you need to have openjdk first in your PATH, run:
echo 'export PATH="/opt/homebrew/opt/openjdk/bin:$PATH"' >> ~/.zshrc
For compilers to find openjdk you may need to set:
export CPPFLAGS="-I/opt/homebrew/opt/openjdk/include"
For Homebrew, the package that installs the new AdoptOpenJDK is named as temurin. So you need to use below command:
brew install --cask temurin17
If you get any error like temurin cask not available then update brew using below commands:
brew update
brew tap homebrew/cask-versions
To switch quickly between different versions of java add the entries in bashrc as per your jdk versions like:
alias j8="export JAVA_HOME=`/usr/libexec/java_home -v 1.8`; java -version"
alias j17="export JAVA_HOME=`/usr/libexec/java_home -v 17`; java -version"
Steps to install
You asked:
let me know the steps to install Java on a Mac.
Download an installer free-of-cost from vendors such as Adoptium, Azul Systems, Bellsoft, Amazon, Oracle, Microsoft, SAP, and others.
Run installer app.
Quit the installer app when done.
Verify installation by typing on a command-line in Terminal.app:java --version
Delete installer app that you downloaded.
Configure your IDE to use that new Java implementation you installed.
Java location
You asked:
Where is java 17 installed??
/Library/Java/JavaVirtualMachines/
In the Finder, choose Go > Go to Folder, and paste /Library/Java/JavaVirtualMachines/.
Note that this is not the Library folder within your home folder. We are not referring to /Users/your_user_name/Library/…. We are referring to the root Library folder that applies across all the user accounts on this Mac.
You said:
I did brew install java
No need for the Homebrew package manager. If you already enjoy using the brew tool, proceed. But if new to Homebrew, skip it if your only goal is to install Java. Just use an installer for Java as you would for many Mac apps.
JavaFX
You added a tag for javafx.
Be aware that for JavaFX, you have two options:
Include the necessary OpenJFX libraries within your development project and within your final app, or …
Use a JDK that includes the JavaFX/OpenJFX libraries.
At least two vendors provide JDK installers that include the JavaFX/OpenJFX libraries:
Azul Systems (ZuluFX)
Bellsoft (LibericaFX)
This answer is specifically if you use Intellij on a Mac
Within IntelliJ, you can use the IDE to add new JDKs of selected versions from common vendors. Instructions for this are here:
Setup the project JDK
When setting up the JDK, you can either:
Select a pre-existing JDK which has been registered with the IDE OR
Use the Add JDK option to add a new JDK which you previously downloaded and installed using the method outlined in Basil's answer OR
Use the Download JDK option to choose a vendor and version of the JDK that the IDE will automatically download, install and make available for selection.
The JDKs installed by Idea will be located in the same location as outlined in Basil's answer for a manual install /Library/Java/JavaVirtualMachines/.
One common issue is that the version of the JDK registered for the project differs from the default version used in the terminal. This can sometimes mean that the app works when run in Idea, then fails when run in the terminal (or, at least that it is executed against a version of the JDK you didn't expect).
To select the version of the JDK to run in the terminal, configure the Java home setting as outlined in rzwitserloot's answer.
export JAVA_HOME=`/usr/libexec/java_home -v 17`
Also, some tools such as the openjfx maven plugin will not use the java version selected in Idea when executing a call to a JDK tool like jlink, but will instead have their own mechanism for finding a JDK to use (e.g. look at JAVA_HOME or use the Maven toolchains plugin). So it is always good to check the JAVA_HOME variable and ensure that it is set to a reasonable value, both for terminal execution and for effective use of Java development tools that may rely on it.
I think that answers here are not fully out of topic, but from my point of view, my case is exactly the same as that of the author. I had already installed java 8, 11, and 13. All of them resides at:
/Library/Java/JavaVirtualMachines/
Nevertheless when I tried to find the path of JDK 17 it resides:
/usr/local/Cellar/openjdk
I use Mac OS Big Sur and the JDK was installed with homebrew
Brew now supports searching old formulae and allowing you to install a specific version. I'm using Homebrew 3.5.2-117-gb941470
Create a local tap: brew tap-new --no-git local/openjdk
Ask Brew to find the formulae of the version you want: brew extract --version 17.0.2 openjdk local/openjdk
Install Java 17 using your new local tap: brew install openjdk#17.0.2
Link the JDK into the MacOS JVM Dir: sudo ln -sfn /usr/local/opt/openjdk#17.0.2/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk17.0.2.jdk
Check Java 17 is available: /usr/libexec/java_home -V
Set Java Home: export JAVA_HOME=$(/usr/libexec/java_home -v17)
Check current version of Java is correct...
$ java --version
openjdk 17.0.2 2022-01-18
The following method installs Java without the need for any additional tools or package managers.
Go to https://jdk.java.net/17/ and download the latest macOS archive.
Download the latest Adoptium release for the Java 17 branch by going to https://adoptium.net/temurin/releases/ and be sure to select the tar.gz version.
The archive is either for x64 (Intel CPU) or for AArch64 (Apple Silicon / M1 CPU).
Then, open a Terminal, and extract the downloaded archive to the system path for Java virtual machines:
cd Downloads
tar xzf OpenJDK17U-jdk_aarch64_mac_hotspot_17.0.5_8.tar.gz -C /Library/Java/JavaVirtualMachines
I am trying to install netbeans 8 in debian-7.0-amd64-minimal. (VPS)
1st I have installed java/JDK latest version (1.8.0_20) by following
https://www.digitalocean.com/community/tutorials/how-to-manually-install-oracle-java-on-a-debian-or-ubuntu-vps
Next I am trying to install netbeans by following
http://installnetbeansdebian.blogspot.com/2013/06/how-to-install-netbeans-73-ide-complete.html
when I run
./netbeans-8.0-php-linux.sh
it displays the following error.
Configuring the installer...
Searching for JVM on the system...
Extracting installation data...
Running the installer wizard...
Exception: java.lang.NoClassDefFoundError thrown from the UncaughtExceptionHandler in thread "main"
Anybody knows, how to fix this?
Had a similar issue, for some reason the command
$ sudo chmod -x netbeans-8.2-javaee-linux.sh
didn't create executable file out of the script, so I had to use GUI method, as it shown here in the second answer:
https://askubuntu.com/questions/229589/how-to-make-a-file-e-g-a-sh-script-executable-so-it-can-be-run-from-termina
then as the user Firestorm suggested just dropped sudo and it worked for me:
$./netbeans-8.2-javaee-linux.sh
Installed perfectly even created "Development" department in the "Application" menu and nested program start tag there. Debian-8 x64 KDE
Just had the same issue here (Fedora 25, Netbeans 8.2). It only occurs, when executing the installer as root which seems to be a problem with a root-privileged gui in a non-root-privileged environment.
Solution: Either install netbeans as normal user in your home directory OR launch the installer as root with the switch '--silent':
./netbeans-8.2-html-linux-x64.sh --silent
which will install netbeans in /usr/local.
Maybe late. For ubuntu 17
azuka$ : xhost +
azuka$ : sudo su
root$ : sh netbeans-8.2-php-linux.sh
I had the same issue on "Fedora 26". But I resolved it by repeating the same procedure but not as 'root' or 'sudo'. I.e:
Change directory to locate the downloaded file.
then.
$ chmod +x netbeans-8.2-linux.sh
$ ./netbeans-8.2-linux.sh
This question is nearly exactly two years old, but still actually occurred here just now.
I had this too on a Slackware system. I was trying to install it like you (because Slackware doesn't provide NetBeans packages) and I was typing in a virtual terminal window after executing su. The problem was the exact same as yours: I got the NoClassDefFound exception and the installer stopped. The solution was to execute the NetBeans installer as a normal user, or as the same user that you're logged in as in the X session. Java errors can be a bit cryptical, but the solution's as easy as that.
I hope this helps.
Simply close netbean if you open it already
1.install openjdk
2. download netbean
and where you download it use below command
$./netbeans-8.2-javaee-linux.sh
The solution was to execute the NetBeans installer as a normal user, or as the same user that you're logged in as in the X session
The solution was to execute the NetBeans installer as a normal user, or any user other than root.
define JAVA_HOME and JDK_HOME as environment variable
I had the same issue while installing Oracle Developer Studio via ssh X forwarding. I switched jdk from SE to 1.7.0 openjdk (update-alternatives --config java) and then managed to install. I hope it will help someone.
I have the same issue and I use:
sudo bash -x Apache-NetBeans-12.1-bin-linux-x64.sh --silent
and with this I coud install netbeans, but the version 12.1.
It is much easier (and more reliable and more secure) to use package management system to install software. All you need to do is to use the following command to install netbeans on Debian:
sudo apt-get install netbeans
Although netbeans version 7 will be installed (ver. 8 is not available from native Debian repository yet) you won't be struggling to make it work.
Besides please be careful with instructions to install java/JDK -- the method they describe is not the best. If OpenJDK is not sufficient for you then you might be doing something wrong. If you absolutely have to try Oracle's Java (unfortunately there are some corner cases when it might be needed) please use java-package to build your own Java package (.deb) from downloadable Java binary.
On my development machine I always have to install Java 6 and Java 7 and I have to install each JDK in both, the 32 and 64 bit version, for testing purposes. Since the frequency of Java updates seems to be getting more and more ridiculous (twice per week by now?) each update requires me to un- and then re-install 4 JDKs. So this is getting really quite annoying and I would thus like to script this entire process.
My problem is, that by default each JDK versions installs into a directory-path that contains the update-number (default: "C:\Program Files\Java\jdk1.6.0_<update-nr>\"). To spare me from having to adapt tons of build-scripts I always manually strip the trailing "_<update-nr>" from the installation path and always install into the same "C:\Program Files\Java\jdk1.6.0" or "C:\Program Files\Java\jdk1.7.0", resp., for the 64-bit versions and into C:\Program Files (x86)\Java\jdk1.6.0" or "C:\Program Files (x86)\Java\jdk1.7.0", resp., for the 32-bit versions.
While I found out, how to specify the installation directory for a JRE installer (i.e. the Java runtime):
<jre-installfile>.exe [/s] [INSTALLDIR=<drive>:\<JRE_install_path>]
[STATIC=1] [WEB_JAVA=0/1] [WEB_JAVA_SECURITY_LEVEL=VH/H/M/L]
I did not yet find a similar description how to specify the installation directory for the JDK installer.
Does anyone know if and how one can specify the install path for the JDK installer, so that one can direct a silent JDK installation into a specific installation directory?
I could successfully install both x64 and x86 versions of JDK 8 update 60 including a public JRE with these commands:
Here JDK 1.8.60 (x86) with source code is going to C:\Java\x86\jdk1.8.0_60 and JRE to C:\Java\x86\jre1.8.0_60:
jdk-8u60-windows-i586.exe /s ADDLOCAL="ToolsFeature,SourceFeature,PublicjreFeature" INSTALLDIR=C:\Java\x86\jdk1.8.0_60 /INSTALLDIRPUBJRE=C:\Java\x86\jre1.8.0_60
In a similar way, JDK 1.8.60 (x64) with source code is going to C:\Java\x64\jdk1.8.0_60 and JRE to C:\Java\x64\jre1.8.0_60:
jdk-8u60-windows-x64.exe /s ADDLOCAL="ToolsFeature,SourceFeature,PublicjreFeature" INSTALLDIR=C:\Java\x64\jdk1.8.0_60 /INSTALLDIRPUBJRE=C:\Java\x64\jre1.8.0_60
See Oracle JRE installer options
I just found this article while searching... it specifies a parameter for INSTALLDIR.
http://makeitfaster.wordpress.com/2011/03/25/java-jdk-silent-install-on-windows/
jdk-7u2-windows-i586.exe /s ADDLOCAL="ToolsFeature,SourceFeature" INSTALLDIR="%CD%\jdk7u2"
I unfortunately had already installed on my dev machine, so i couldn't test...
One approach to avoid rewriting directories in scripts is to use symlinks (junctions on NTFS).
First, download the junction utility from SysInternals here:
http://technet.microsoft.com/en-us/sysinternals/bb896768.aspx
then unzip, copy to some directory on the PATH, and run once to accept the licence.
Then you can create symlinks easily:
junction "C:\Program Files\Java\jdk1.6.0" "C:\Program Files\Java\jdk1.6.0_37"
junction "C:\Program Files (x86)\Java\jdk1.6.0" "C:\Program Files (x86)\Java\jdk1.6.0_37"
To delete some symlink:
junction -d "C:\Program Files\Java\jdk1.6.0"
You can also use mklink ( http://technet.microsoft.com/en-us/library/cc753194.aspx ) instead (and del for removal), but I prefer the simplicity and clarity of junction.
Try:
jdk-7u2-windows-i586.exe /s INSTALLDIR=\"C:\Program Files\JAVA\JDK\"
I just discovered a regression in the JDK7 installer that causes it to ignore INSTALLDIR. The last correct version is update 21.
I have filed a bug report and will let you know once Oracle replies.
UPDATE: It turns out that this was caused by an corrupt (incomplete) JDK installation. Once I uninstalled this version (Add/Remove Programs) the new installation ran just fine.
This is the way that works for me for JDK_7u55. I opted to have the JRE installed too:
PowerShell Commands
$strJavaInstallExe=<Your JDK executable>
$strJavaInstallDir=<The directory you want the JDK and JRE to install to>
$cmdInstallJava=$strJavaInstallExe+' /passive /log "'+$strJavaInstallDir+'\install.log" ADDLOCAL="ToolsFeature,SourceFeature,PublicjreFeature" INSTALLDIR="'+$strJavaInstallDir+'" INSTALLDIRPUBJRE="'+$strJavaInstallDir+'"'
Invoke-Expression $cmdInstallJava
Hope this helps!
EDIT - easier way
Execute jdk-7u60-windows-x64.exe /passive /log install.log INSTALLDIR:c:\pippo
Works with 7u45 and 7u60
OLD answer
The exe contains the msi installer. To extract is (for sure there are more elegant methods, but I know only this one)
Run the exe manually - you need to do it only the first time, to convert it to an msi
Grab the msi (and all other.cab file) from C:\Users\AppData\LocalLow\Sun\Java\jdx.x.y\jdk.x.y.z.msi
run msiexec /i jdkx.y.z.msi /passive INSTALLDIR:c:\pippo
file jreinstall.bat (example: storage in desktop) (replace jre for jdk)
#echo off
start /w %UserProfile%\Desktop\jre-8u65-windows-x64.exe /s
setx JAVA_HOME "C:\Program Files\Java\jre1.8.0_65"
exit
I know this question is going to sound very stupid but here goes nonetheless. I need to bundle the new version of the JRE with my applicaiton and I cannot find either a version of the JRE that is not in .exe nor can I find where the jre is installed to on Windows 7 (windows 7 search cannot find anything so it is not helpful). Can anyone tell me where I can download a version of the JRE the would be good to bundle or where I can find the path that windows installed the JRE too?
Not sure about Windows 7 but on Windows XP the installation defaults to C:\Program Files\Java\jre6
corsiKa is correct about Windows 7
I found that the file path for jre is
C:\Program Files (x86)\Java\jre7
For my purposes I needed to install the Connector/J JDBC driver in the ext directory.
jre7\lib\ext\
Alternatively, install a JDK, if you haven't done it yet, and take the jre folder in its installation directory.
The JDK can also install it in Program Files (64-bit on 64-bit Windows, always on 32-bit Windows) or Program Files (x86) (32-bit on 64-bit Windows) as explained above.
It also installs java.exe, javaw.exe and javaws.exe in C:\Windows\system32
It will be the last installed version...
I have found another, more generic solution that I'm using in Powershell. The problem is that Java is now using symlinks to java, javaw and javac, so you can't always rely on using "where.exe java" because it returns the symlink.
I now rely on Java to report where it's actually running from by using verbose mode and parsing the output.
$javapath=((java -verbose -version | ? {$_ -match "Opened" }).replace("[Opened ","")).replace("\lib\rt.jar]","")
It will find the path that java reports it's actually using and return the installation directory. The only problem I haven't quite resolved is that it outputs extra information because of the "-version" option, but the only other option is the help, which is worse. However, when run from a script, the console output can simply be ignored. If someone else has a way of keeping it quiet, I'd like to hear it.