Hey yall, ill try and keep this quick but detailed. Prolly an easy answer here but i dont know much about pc’s except how to build em.
Need Java SE binary platform to open .jar files for me. OS is windows 10 home. Tried all online and offline downloads for Java and openjdk + ninite download on firefox/chome/IE11 — all of them put the installer in my file explorer, but when the installer finished, i cant find the java.exe anywhere or anything it supposedly downloaded.. tried searching for app extensions by file type and .jar only gives me the option to open via notepad, firefox or IE11. Turned off firewalls and malwarebytes, switched user profiles, even tried wiping my laptops old SSD to see if installing on a clean ssd would help.. nothing yet. Any idea what i could be doing wrong or what may be the issue?
submitted by Whats up guys, hoping to get some help on this issue. Im no terminology/software/pc whiz by any means but I’ll try and make this as detailed as i can.
basically i just want to open some .JAR files so...i tried downloading both java and openJDK to my windows 10 64bit standard edition OS. I tried using firefox, chrome, and IE11 — all allowed me to download the installer just fine. I open and run the installer as admin with no firewalls or anything running that cld block it. The installer does its thing and tells me the installation is all set, but theres no new Java.exe or jdk file that gets added to my file explorer. I tried downloading it thru ninite, no dice. Tried downloading it to an old hard drive i wiped clean prior to download, nothing. Tried offline installation versions too. I checked in my “app use by file type” and scrolled to .JAR and the java SE binary platform or whatever its called isnt an option, just firefox, IE11, and notepad. No idea what to try next. Ask questions if clarification is needed. Thanks!
submitted by This is my own personal guide I refer to when I'm installing Arch with the KDE Plasma 5 desktop. It is too lengthy to post all at once, so I will keep adding new info sequentially. I'm posting this in the hope it will help Arch newbies, (which I am still myself). I am far from an Arch expert, but I'm sure some of the tips may be of assistance to newbies. I am older so I find it helps to record my install steps so I don't forget them. Please excuse the caps as my vision isn't that great anymore either.
INSTALL CORRECT USER SUDO PERMISSIONS - (substitute your username for htpc in all commands)
SU to root: as root# cp /etc/sudoers /etc/sudoers.bak as root# export VISUAL=nano open the sudoers file with nano
as root# EDITOR=nano visudo
or simply "visudo" if the visual environment has been set to nano:
as root# visudo
User privilege specification
add htpc to sudoers list
root ALL=(ALL) ALL htpc ALL=(ALL) ALL
VERY IMPORTANT: AS ROOT EDITOR=nano visudo (reopen sudoers file again to confirm file was modified correctly) visudo does not warn if incorrect syntax was used, it simply does not save the modifications. remove htpc from wheel group: redundent
;sudo gpasswd -d htpc wheel
INSTALL KDESU
Install kdesu command: (graphical frontend for the su command)
sudo pacman -S kdesu
Update your Arch install sudo pacman -Syu
AUTOLOGIN WORKING SETUP - ARCH LINUX KDE MINIMAL INSTALL
install: sddm
install process for autologin:
make a backup of /etc/sddm.conf
sudo cp /etc/sddm.conf /etc/sddmconf.bak
edit /etc/sddm.conf - review and alter each relevant line:
sudo nano -w /etc/sddm.conf
edit to refect all changes in sddm.conf backup file (many lines require editing).
or simply overwrite sddm.conf with the modified copy.
[Autologin] User=htpc Session=plasma.desktop
Install user folders:
sudo pacman -S xdg-user-dirs sudo xdg-user-dirs-update
BACKUP GRUB CONFIG FILES & RESTORE IF PROBLEMS ARISE AFTER UPDATING OR EDITING GRUB
cp /ussbin/grub-mkconfig /ussbin/grub-mkconfig.backup cp /etc/default/grub /etc/default/grub.backup cp -r /etc/grub.d /etc/grub.d.backup cp /boot/grub/grub.cfg /boot/grub/grub.cfg.backup
cp -f /ussbin/grub-mkconfig.backup /ussbin/grub-mkconfig cp -f /etc/default/grub.backup /etc/default/grub cp -rf /etc/grub.d.backup /etc/grub.d cp -f boot/grub/grub.cfg.backup boot/grub/grub.cfg
IF A RESTORE WAS PERFORMED, UPDATE GRUB AFTERWARDS:
sudo grub-mkconfig -o /boot/grub/grub.cfg
Install Linux LTS Kernal As A Fallback
pacaur -S linux-lts
==> WARNING: Possibly missing firmware for module: wd719x ==> WARNING: Possibly missing firmware for module: aic94xx
Searching suggests these errors can be ignored.
sudo grub-mkconfig
sudo grub-mkconfig -o /boot/grub/grub.cfg
FIX USB ISSUES ON AFFECTED GIGABYTE MOBO's
FIX USB ISSUES - GIGABYTE 970A-D3P MOBO
BIOS Version FC BIOS Date 06/01/2015 BIOS ID 8A02BG0A
WORKING SOUTION - FIX FOR DISABLED REAR USB PORTS & USB INITIALIZATION ERRORS
BACKUP GRUB CONFIG FILES AS OUTLINED ABOVE BEFORE EDITING ANY GRUB FILES
restart the computer and press delete to enter the uefi BIOS
plug your usb mouse, thumbdrive, and keyboard, (I was using a non USB KB fortunately), in the usb 2 ports.
Ensure IOMMU is enabled, XHCI handoff is enabled, EHCI handoff is disabled, USB Legacy support is enabled
save changes, and exit the BIOS
Then boot into Arch:
The wireless trackball would not work on any of the USB ports upon bootup. Fortunately I had KB function, as it was not a USB Keyboard.
press Alt++F2 to start Krunner
in the Krunner window input : yakuake
in the yakuake terminal enter the following command:
sudo nano /etc/default/grub
Edit the empty quotes in this line to read: GRUB_CMDLINE_LINUX="iommu=soft"
save the changes to grub.config (Ctrl+o + enter) and exit nano (Ctrl+x ).
save the modified grub config, by running the following command in terminal:
sudo grub-mkconfig -o /boot/grub/grub.cfg
then shut down the computer with this terminal command:
shutdown -h now
Restart the computer, press delete to get back into the uefi BIOS
Disable "iommu" in the bios, and restart.
all usb, 2.0 & 3.0 ports should work now.
EDIT PACMAN.CONF - ADD AUR & MULTILIB REPOSITORIES
Install pacaur to access the AUR
backup /etc/pacman.conf
sudo cp /etc/pacman.conf /etc/pacmanconf.bak
edit /etc/pacman.conf manually, or use the easy method further below:
sudo nano /etc/pacman.conf add to bottom of file:
[archlinuxfr] SigLevel = Never Server =
http://repo.archlinux.f$arch go to next step (enable multilib)
Before saving file enable multilib, by uncommenting the multilib entry
save file in nano - ctrl+o "enter" - ctrl+x
INSTALL REFECTOR & SYNC FASTEST MIRRORS:
sudo pacman -S reflector make a backup of /etc/pacman.d/mirrorlist sudo cp /etc/pacman.d/mirrorlist /etc/pacman.d/mirrorlist.bak
rate and sort the most recently synchronized mirrors by download speed, and overwrite the file /etc/pacman.d/mirrorlist:
SYNC 50 FASTEST MIRRORS WITH REFLECTOR- favorite mirrorupdate command:
sudo reflector --verbose -l 50 -p http --sort rate --save /etc/pacman.d/mirrorlist
Other Reflector Sync Options:
sudo reflector --verbose --latest 5 --sort rate --save /etc/pacman.d/mirrorlist
Select the 200 most recently synchronized HTTP or HTTPS mirrors, sort them by download speed, and overwrite the file /etc/pacman.d/mirrorlist:
sudo reflector --latest 200 --protocol http --protocol https --sort rate --save /etc/pacman.d/mirrorlist
Select the HTTPS mirrors synchronized within the last 12 hours and located in the US, sort them by download speed, and overwrite the file /etc/pacman.d/mirrorlist: sudo reflector --country 'United States' --age 12 --protocol https --sort rate --save /etc/pacman.d/mirrorlist
INSTALL REFLECTOR-TIMER - SYNC & AUTO-UPDATE FASTEST MIRRORS:
install and configure reflector-timer, to do weekly mirror list updates. See reflector Arch Wiki for full info.
pacaur -S reflector-timer (AUR) - A service and timer for the reflector mirrorlist upgrade.
The configuration files are located:
/usshare/reflector-timereflector.conf /home/htpc/.cache/pacaureflector-timereflector.conf
Contents in this file should be options of reflector. This way you have the total control over how reflector will be run.
For example:
--country China --country 'United States' --sort rate --save /etc/pacman.d/mirrorlist
Run reflector --help to see available options. Usage
enable timer
sudo systemctl enable reflector.timer
disable timer
sudo systemctl disable reflector.timer
update mirrorlist immediately
sudo systemctl start reflector.service
INSTALL PACAUR - (SAME COMMAND SYNTAX AS PACMAN)
PACAUR USAGE - INSTALL ONLY - (pacaur -S)
DO NOT USE FOR UNINSTALLING PROGRAMS - (pacman -R package_to_remove)
sudo pacman -S pacaur
pacaur -Syua update AUR database
pacaur -Syu update pacman database & install all program updates
COMMANDS FOR INSTALLING WITH PACMAN - (SUB PACAUR AND SOME WORK FOR AUR AS WELL)
Always run pacman as ROOT:
sudo pacman -U
http://www.example.com/repo/example.pkg.tar.xz (install a foreign 'remote' package)
sudo pacman -U /package_path/package_name.pkg.tar.xz (Install a downloaded or a local package)
sudo pacman -R package_name (remove a package)
sudo pacman -Sy (sync the pacman database)
sudo pacman -Syy (force sync the pacman database)
sudo pacman -Syu (sync cache, and upgrade the system)
sudo pacman -Syyu (force sync the pacman database, and update the system)
Important Options:
--needed
If you select a package that has already been installed in your system, you may use '--needed' , otherwise this package will be reinstalled, even if it is already up to date.
--noconfirm
Bypass any and all “Are you sure?” messages. It’s not a good idea to do this unless you want to run pacman from a script.
--confirm
Cancels the effects of a previous --noconfirm.
COMMANDS FOR UNINSTALLING WITH PACMAN - (SUB PACAUR AND SOME WORK FOR AUR AS WELL)
sudo pacman -R package_name remove a package
sudo pacman -Rn package_name remove a package and its configuration files
sudo pacman -Rs package_name only remove those dependencies that are not needed by other packages
sudo pacman -Rdd package_name force removal of a package
sudo pacman -Rcn package_name removal of the package+deps
sudo pacman -Rcns for removal of the package+deps+deep deps (be very careful)
sudo pacman -Qdt list all orphans.
sudo pacman -Rsn $(pacman -Qdtq) remove all orphans
pacman -Sc delete older packages that are no longer installed.
sudo pacman -Scc to delete all cached packages.
MISC PACMAN & PACAUR RELATED COMMANDS :
sudo pactree -s package-name find all associated package dependencies (no AUR).
sudo pacman -Sw package_name download a package without installation to the cache folder
sudo pacman -Qu list packages that are out of date.
pacaur -Sc (instead of pacman -Sc) this will then extend cache cleaning into the AUR clone directory.
ls /vacache/pacman/pkg | grep package-name search packages downloaded with pacman stored in /vacache/pacman/pkg
expac -S '%%n: %D' package-name find all required package dependencies
sudo pacman -Qii package-name lists all required and optional dependencies (one of the best commands)
sudo pacman -Qo package-name list package that owns a particular file
sudo pacman -Qi package-name look in "Required By" field for package dependencies
sudo pacman -Qqen > pkglist.txt create a list in ~ of native installed packages (no aur) without version info
sudo pacman -Qqe > pkglist.txt create a list in ~ of all installed packages (incl aur) without version info
sudo pacman -S - < pkglist.txt auto reinstall all native packages (no aur) from the package backup list.
pacman -Si package_name provides detailed summary of a package
whoneeds package_name list all packages recursively depending on an installed package, use whoneeds from pkgtools AUR
AUR - SPECIFIC COMMANDS
SEARCH THE AUR: pacaur -Ss --aur package-name | grep package-name
Examples: pacaur -Ss --aur kde-services | grep kde-services pacaur -Ss --aur tvheadend | grep tvheadend
pacman -Qem List all installed packages from the AUR
Install Multimedia/Compatibility Codecs & CD & DVD Authoring Support
pacaur -S gst-plugins-base gst-plugins-good gst-plugins-ugly gst-plugins-bad --needed --noconfirm (should already be installed)
pacaur -S gstreamer0.10-bad-plugins gstreamer0.10-base gstreamer0.10-base-plugins gstreamer0.10-good gstreamer0.10-good-plugins gstreamer0.10-ugly gstreamer0.10-ugly-plugins qt4-gstreamer qt5-gstreamer --needed (conflicting dependencies: if first group is already installed)
IF ALL ELSE FAILS, & SOME OBSCURE CODECS WILL NOT PLAY:
Install full MPlayer binary codecs as an ultimate solution.
They can also be found in the "codecs" AUR and "codecs64" AUR packages. pacaur -S codecs --needed pacaur -S codecs64 --needed
pacaur -S a52dec cdrdao cdparanoia cdrkit dvd+rw-tools dcadec dvdauthor dvgrab exfat-utils fuse-exfat faac faad2 flac flashplugin gst-libav jasper lame libao libbluray libcdaudio libcdio-paranoia libcdr libdca libdvdcss libdvdread libdvdnav libdv libmad libmatroska libmediainfo libmpeg2 libtheora libvorbis libxv media-player-info mencoder mkvtoolnix-cli mkvtoolnix-gui transcode wavpack x264 x265 xvidcore --needed
Install True Type & Other Font Support
pacaur -S ttf-bitstream-vera ttf-inconsolata ttf-ubuntu-font-family ttf-dejavu ttf-freefont ttf-linux-libertine ttf-liberation opendesktop-fonts freetype2 lib32-freetype2 fontconfig cairo --needed --noconfirm
pacaur -S ttf-ms-fonts ttf-monaco ttf-noto ttf-vista-fonts --needed
FONTS RECOMMENDED FOR THE CONSOLE:
pacaur -S terminus-font --needed non ttf pacaur -S dina-font --needed non ttf pacaur -S adobe-source-code-pro-fonts adobe-source-sans-pro-fonts adobe-source-serif-pro-fonts --needed ttf fonts
Install File Utilities:
pacaur -S ark cpio isomd5sum lzop p7zip tar zip unzip unrar unarj unace zlib zziplib --needed --noconfirm
Install Printer Support -
pacaur -S cups cups-pdf foomatic-db-engine foomatic-db-nonfree foomatic-filters ghostscript gsfonts gutenprint lib32-libcups libpaper print-manager system-config-printer --needed
pacaur -S simple-scan Do not install , unless using a MFP that requires scanner support
Printer support for different brands :
pacaur -S hplip Drivers for HP DeskJet, OfficeJet, Photosmart, Business Inkjet and some LaserJet pacaur -S splix CUPS drivers for some of the SPL (Samsung Printer Language) printers pacaur -S samsung-unified-driver-common (AUR) - samsung unified printer & scanner drivers pacaur -S samsung-unified-driver-printer (AUR) - samsung unified printer & scanner drivers pacaur -S samsung-unified-driver (AUR) - samsung unified printer & scanner drivers pacaur -S epson-inkjet-printer-escpr (AUR) - epson-inkjet-printer drivers
then enable (one line at a time)…
sudo systemctl enable org.cups.cupsd.service sudo systemctl enable cups-browsed.service sudo systemctl start org.cups.cupsd.service sudo systemctl start cups-browsed.service
Set Up Static Ip Address: Best Method For Sharing Printers And Drives
Sometimes Network Manager will not save static info. If that happens, install nm-connection-editor to setup a static IP. pacaur -S nm-connection-editor run in krunner (alt+f2) nm-connection-editor ====> ipv4 ===> manual connection settings paste the following into nm-connection-editor & save: Choose a static address appropriate for your network: Static IP Address: 192.168.0.101 or 192.168.0.102 ,103, etc etc Netmask: 255.255.255.0 Gateway: 192.168.0.1 DNS server: 8.8.8.8 Search Domains: 8.8.4.4
INSTALL SAMBA
pacaur -S samba --needed
Copy the example smb.conf file, (or a preconfiguered backup copy) to /etc/samba/smb.conf:
sudo cp /etc/samba/smb.conf.default /etc/samba/smb.conf
edit configuration options, (if not already saved in a preconfigured backup file).
sudo systemctl enable smbd nmbd
sudo systemctl start smbd nmbd
sudo systemctl restart smbd nmbd Restart the service to apply any new changes.
sudo systemctl status smbd nmbd
sudo cp /etc/samba/smb.conf ~/.smb Backup smb.conf)
;sudo smbpasswd -a htpc DO NOT USE
(deprecated - use pdbedit command instead)
Configure & install the samba user & password, (current revised password install command).
sudo pdbedit -a -u htpc (substitute your username for htpc in all commands)
INSTALL OTHER NETWORKING COMPONENTS
pacaur -S kdenetwork-filesharing --needed (add windows style samba gui configuration plugin)
pacaur -S samba-mounter-git --needed (AUR) - adds network folders to dolphin with automount at login
pacaur -S smb4k --needed (smb4k samba configurator+samba-mounter-git for full samba support)
pacaur -S nm-connection-editor --needed (configure a network static ip)
pacaur -S cifs-utils --needed The in-kernel CIFS filesystem for mounting SMB/CIFS shares
CREATE A SAMBASHARE GROUP - (optional)
"Usershare" is a feature that gives non-root users the capability to add, modify, and delete their own share definitions in the GUI.
This creates the usershare directory in /valib/samba:
mkdir -p /valib/samba/usershare
This creates the group sambashare:
groupadd -r sambashare
This changes the owner of the directory to root and the group to sambashare:
chown root:sambashare /valib/samba/usershare
This changes the permissions of the usershare directory so that users in the group sambashare can read, write and execute files:
chmod 1770 /valib/samba/usershare
Set the following parameters in the smb.conf configuration file:
/etc/samba/smb.conf
[global] usershare path = /valib/samba/usershare usershare max shares = 100 usershare allow guests = yes usershare owner only = yes (I have changed this to no, from the arch recommendation of yes)
Add your user to the sambashare group. Replace your_username with the name of your user:
gpasswd sambashare -a htpc
Restart smbd.service and nmbd.service services.
sudo systemctl restart smbd nmbd
Log out and log back in. You should now be able to configure your samba share using GUI. For example, in Dolphin you can right click on any directory and share it on the network. If you want to share paths inside your home directory you must make it listable for the group others.
I believe it is also best practice to add the "sambashare" group to the ownership of any shared directories created for shares mounted though fstab. sudo mkdir /media/shares sudo chown rootc:sambashare /media/shares
sudo chmod 770 /media/shares
sudo cp /etc/samba/smb.conf ~/smb..conf
sudo pdbedit -a -u htpc
SMB.CONF
Configure smb.conf to add your shares
If you are using a firewall, do not forget to open required ports (usually 137-139 + 445).
Reduce the delay time to access SMB shared drives through Dolphin, (not mounted through fstab).
Solution: delete /etc/krb5.conf, or simply delete the contents of krb5.conf.
MOUNT 3TB NTFS DRIVE AS A REMOTE SHARE WITH THE FOLLOWING FSTAB ENTRY:
//192.168.0.101/3tbWin /media/shares cifs rw,username=htpc,password=sysadmin,iocharset=utf8,uid=1000,vers=3.0 0 0
requires "vers=3.0" option, without the "-o" argument in front to work.
Install OpenJDK & OpenJRE (or Sun Java) on Archlinux
install the version of java you wish to be the default first
pacaur -S jre8-openjdk jre8-openjdk-headless jdk8-openjdk
pacaur -S jre7-openjdk jre7-openjdk-headless jdk7-openjdk
pacaur -S jdk 8u131-1 (if alternate sun/oracle java 8 install is desired as well)
to find out your default java version:
archlinux-java status
if the default Java environment is already set to 'java-7-openjdk' it can be changed
See examples below to change the default Java version:
to change default to java-8-openjdk:
sudo archlinux-java set java-8-openjdk
to change default to sun/oracle java-8:
sudo archlinux-java set java-8-jdk
install tt font support forjava:
sudo nano -w /etc/environment
add the following line to /etc/environment:
export _JAVA_OPTIONS='-Dawt.useSystemAAFontSettings=on -Dswing.aatext=true'
To be continued
Introduction
Java and the JVM (Java's virtual machine) are required for many kinds of software, including Tomcat, Jetty, Glassfish, Cassandra and Jenkins and
Data Center Europe.
In this guide, you will install various versions of the Java Runtime Environment (JRE) and the Java Developer Kit (JDK) using apt . You'll install OpenJDK as well as official packages from Oracle. You'll then select the version you wish to use for your projects. When you're finished, you'll be able to use the JDK to develop software or use the Java Runtime to run software.
Prerequisites
To follow this tutorial, you will need:
- One Debian 9 server set up by following the the Debian 9 initial server setup guide tutorial, including a non-root user with sudo access and a firewall.
Installing the Default JRE/JDK
The easiest option for installing Java is to use
Web Hosting Europe the version packaged with Debian. By default, Debian 9 includes Open JDK, which is an open-source variant of the JRE and JDK.
This package will install OpenJDK version 1.8, which is compatible with Java 8. Java 8 is the current Long Term Support version and is still widely supported, though public maintenance ends in January 2019.
To install this version, first update the package index:
sudo apt update
Next, check if Java is already installed:
java -version
If Java is not currently installed
SSD Web Hosting Romania, you'll see the following output:
Output-bash: java: command not found
Execute the following command to install OpenJDK:
sudo apt install default-jre
This command will install the Java Runtime Environment (JRE). This will allow you to run almost all Java software.
Verify the installation with:
java -version
You'll see the following output:
Outputopenjdk version "1.8.0_181" OpenJDK Runtime Environment (build 1.8.0_181-8u181-b13-1~deb9u1-b13) OpenJDK 64-Bit Server VM (build 25.181-b13, mixed mode)
You may need
Shared Hosting Moldova the Java Development Kit (JDK) in addition to the JRE in order to compile and run some specific Java-based software. To install the JDK, execute the following command, which will also install the JRE:
sudo apt install default-jdk
Verify that the JDK is installed by checking the version of javac , the Java compiler:
javac -version
You'll see the following output:
Outputjavac 1.8.0_181
Next, let's look at how to install Oracle's official JDK and JRE.
Installing the Oracle JDK
If you want to install the Oracle JDK, which is the official version distributed by Oracle, you'll need to add a new package repository for the version you'd like to use
Cloud Computing Platform Europe.
First, install the software-properties-common package which adds the apt-get-repository command which you'll use to add additional repositories to your sources list.
Install software-properties-common with:
sudo apt install software-properties-common
With this installed, you can install Oracle's Java.
Installing Oracle Java 8
To install Java 8, which is the current long-term support version, first add its package repository:
sudo add-apt-repository ppa:webupd8team/java
When you add the repository, you'll see a message like this:
output Oracle Java (JDK) Installer (automatically downloads and installs Oracle JDK8). There are no actual Java files in this PPA. Important -> Why Oracle Java 7 And 6 Installers No Longer Work: http://www.webupd8.org/2017/06/why-oracle-java-7-and-6-installers-no.html Update: Oracle Java 9 has reached end of life: http://www.oracle.com/technetwork/java/javase/downloads/jdk9-downloads-3848520.html The PPA supports Ubuntu 18.04, 17.10, 16.04, 14.04 and 12.04. More info (and Ubuntu installation instructions): - for Oracle Java 8: http://www.webupd8.org/2012/09/install-oracle-java-8-in-ubuntu-via-ppa.html Debian installation instructions: - Oracle Java 8: http://www.webupd8.org/2014/03/how-to-install-oracle-java-8-in-debian.html For Oracle Java 10, see a different PPA: https://www.linuxuprising.com/2018/04/install-oracle-java-10-in-ubuntu-or.html More info: https://launchpad.net/~webupd8team/+archive/ubuntu/java Press [ENTER] to continue or ctrl-c to cancel adding it
Press ENTER to continue. It will attempt to import some GPG signing keys, but it won't be able to find any valid ones
VPS per Hour Europe:
Outputgpg: keybox '/tmp/tmpgt9wdvth/pubring.gpg' created gpg: /tmp/tmpgt9wdvth/trustdb.gpg: trustdb created gpg: key C2518248EEA14886: public key "Launchpad VLC" imported gpg: no ultimately trusted keys found gpg: Total number processed: 1 gpg: imported: 1 gpg: no valid OpenPGP data found.
Execute the following command to add the GPG key for the repository source manually:
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys C2518248EEA14886
Then update your package list:
sudo apt update
Once the package list updates, install Java 8:
sudo apt install oracle-java8-installer
Your system
Cloud VPS Moldova will download the JDK from Oracle and ask you to accept the license agreement. Accept the agreement and the JDK will install.
Installing Oracle Java 10
To install Oracle Java 10, first add its repository:
sudo add-apt-repository ppa:linuxuprising/java
You'll see this message:
Output Oracle Java 10 installer Java binaries are not hosted in this PPA due to licensing. The packages in this PPA download and install Oracle Java 10 (JDK 10), so a working Internet connection is required. The packages in this PPA are based on the WebUpd8 Oracle Java PPA packages: https://launchpad.net/~webupd8team/+archive/ubuntu/java Created for users of https://www.linuxuprising.com/ Issues or suggestions? Leave a comment here: https://www.linuxuprising.com/2018/04/install-oracle-java-10-in-ubuntu-or.html More info: https://launchpad.net/~linuxuprising/+archive/ubuntu/java Press [ENTER] to continue or ctrl-c to cancel adding it
Press ENTER to continue the installation
Xeon Dedicated Server Europe. Like with Java 8, you'll see a message about invalid signing keys:
Outputgpg: keybox '/tmp/tmpvuqsh9ui/pubring.gpg' created gpg: /tmp/tmpvuqsh9ui/trustdb.gpg: trustdb created gpg: key EA8CACC073C3DB2A: public key "Launchpad PPA for Linux Uprising" imported gpg: Total number processed: 1 gpg: imported: 1 gpg: no valid OpenPGP data found.
Execute this command to import the necessary key:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys EA8CACC073C3DB2A
Then update your package list:
sudo apt update
Once the package list updates, install Java 10:
sudo apt install oracle-java10-installer
Your system will download the JDK from Oracle and ask you to accept the license agreement. Accept the agreement and the JDK will install.
Now let's look at how to select which version of Java you want to use.
Managing Java
You can have multiple Java installations on one server. You can configure which version is the default for use
Dedicated Server Romania on the command line by using the update-alternatives command.
sudo update-alternatives --config java
This is what the output would look like if you've installed all versions of Java in this tutorial:
OutputThere are 3 choices for the alternative java (providing /usbin/java). Selection Path Priority Status ------------------------------------------------------------ 0 /uslib/jvm/java-10-oracle/bin/java 1091 auto mode * 1 /uslib/jvm/java-10-oracle/bin/java 1091 manual mode 2 /uslib/jvm/java-8-openjdk-amd64/jre/bin/java 1081 manual mode 3 /uslib/jvm/java-8-oracle/jre/bin/java 1081 manual mode Press to keep the current choice[*], or type selection number:
Choose the number associated with the Java version to use it as the default, or press ENTER to leave the current settings in place.
You can do this for other Java commands, such as the compiler (javac ):
sudo update-alternatives --config javac
Other commands for which this command can be run include, but are not limited to: keytool , javadoc and jarsigner .
Let's set the JAVA_HOME environment variable next.
Setting the JAVA_HOME Environment Variable
Many programs written using Java use the JAVA_HOME environment variable to determine the Java installation location
Dedicated Server in Moldova.
To set this environment variable, first determine where Java is installed. Use the update-alternatives command again:
sudo update-alternatives --config java
This command shows each installation of Java along with its installation path:
Output Selection Path Priority Status ------------------------------------------------------------ 0 /uslib/jvm/java-10-oracle/bin/java 1091 auto mode * 1 /uslib/jvm/java-10-oracle/bin/java 1091 manual mode 2 /uslib/jvm/java-8-openjdk-amd64/jre/bin/java 1081 manual mode 3 /uslib/jvm/java-8-oracle/jre/bin/java 1081 manual mode
In this case the installation paths are as follows:
- Oracle Java 10 is located at /uslib/jvm/java-10-oracle/jre/bin/java .
- Oracle Java 8 is located at /uslib/jvm/java-8-oracle/jre/bin/java .
- OpenJDK 8 is located at /uslib/jvm/java-8-openjdk-amd64/jre/bin/java .
These paths show the path to the java executable.
Copy the path for your preferred installation, excluding the trailing bin/java component. Then open /etc/environment using nano or your favorite text editor:
sudo nano /etc/environment
At the end of this file, add
Reseller VPS Europe the following line, making sure to replace the highlighted path with your own copied path:
/etc/environment
JAVA_HOME="/uslib/jvm/java-8-oracle/jre"
Modifying this file will set the JAVA_HOME path for all users on your system.
Save the file and exit the editor.
Now reload this file to apply the changes to your
Reseller KVM VPS US current session:
source /etc/environment
Verify that the environment variable is set:
echo $JAVA_HOME
You'll see the path you just set
KVM VPS Europe:
Output/uslib/jvm/java-8-oracle/jre
Other users will need to execute the command source /etc/environment or log out and log back in to apply this setting.
Conclusion
In this tutorial you installed
VPS US West multiple versions of Java and learned how to manage them. You can now install
KVM VPS Romania software which runs on Java, such as Tomcat, Jetty, Glassfish, Cassandra or Jenkins.
HotSpot is the VM from the OpenJDK community. It is the most widely used VM today and is used in Oracle’s JDK. It is suitable for all workloads. For more details see OpenJDK HotSpot.. Eclipse OpenJ9 is the VM from the Eclipse community. It is an enterprise-grade VM designed for low memory footprint and fast start-up and is used in IBM’s JDK. How to download and install prebuilt OpenJDK packages JDK 9 & Later Oracle's OpenJDK JDK binaries for Windows, macOS, and Linux are available on release-specific pages of jdk.java.net as .tar.gz or .zip archives. This is NOT OpenJDK 7. It is Oracle Proprietary JDK 7. Posted by Denis Lussier on March 17, 2013 at 10:33 AM CET # Hack on the JDK itself, right here in the OpenJDK Community: Browse the code on the web, clone a Mercurial repository to make a local copy, and contribute a patch to fix a bug, enhance an existing component, or define a new feature. He Openjdk Platform Binary 100 Cpu writes really good and highly Openjdk Platform Binary 100 Cpu informative articles about different topics of binary options trading industry. For instance, this article about the major differences between binary options and forex trading is a must-read for all the traders.
Are binary options a good idea? If you're thinking about trading binary options, watch this video first. Check out our FREE training for traders https://bi... Try free in demo: https://bit.ly/2Ox1TBQ download link https://bit.ly/35doWu4 ★★Best Binary Broker List★★ ----- RISK WARNING: YOUR CAPITAL MIGHT BE AT RISK ----- ★★Click Here to join ... Free Download FXXTOOL SIGNAL!!!! FXXTOOL BOT MASTER SIGNAL ALL BINARY OPTION TRADING #binary_options #iq_option_strategy #iq_option Source: https://www.smart... #Binary #IQ option Please Subscribe http://bit.ly/2DBZhzv Download the free bot below this link https://fxsignalspot.com/ IQ Option Boss bot: http://bit.ly/2... Free binary.com bot binary - automatic trading software Free join: https://bit.ly/2Ox1TBQ Free download: https://bit.ly/362IK3g #binary_options #binary_com ★...
