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QUESTION
I tried to install java8 using the following commands:
...ANSWER
Answered 2019-Sep-26 at 13:20I just went through the same process and I fixed the problem by manually installing java 8 on my ubuntu 18.04 machine. Hopefully my answer will help you.
- Download the latest JAVA 8 SE development kit from here: https://www.oracle.com/technetwork/java/javase/downloads/java-archive-javase8-2177648.html
- Open your terminal.
- Type
$mkdir /opt/jdk
. - Untar Java in your new folder
$tar -zxf jdk-8u5-linux-x64.tar.gz -C /opt/jdk
. - Set oracle JDK as the default JVM by running those two instructions (or something around that depending on your configuration):
Note: Each bullet point is one single command
update-alternatives --install /usr/bin/java java /opt/jdk/jdk1.8.0_/bin/java 100
update-alternatives --install /usr/bin/javac javac /opt/jdk/jdk1.8.0_/bin/javac 100
You can check the result by running java -version !
Before I started, I went through those steps as well in order to remove completely java from my system: https://askubuntu.com/questions/84483/how-to-completely-uninstall-java#185250
The source I used for the manual installation of JAVA was this article: https://www.digitalocean.com/community/tutorials/how-to-manually-install-oracle-java-on-a-debian-or-ubuntu-vps
QUESTION
I'm posting this as a possible bug report because this page says,
Troubleshooting
Please report any issues on our StackOverflow page: https://stackoverflow.com/questions/tagged/corda
Maybe these instructions for installing Java on Ubuntu are wrong (obsolete):
https://docs.corda.net/getting-set-up.html#id4
Java
- Open a new terminal and add the Oracle PPA to your repositories by typing
sudo add-apt-repository ppa:webupd8team/java
. Press ENTER when prompted.- Update your packages list with the command
sudo apt update
- Install the Oracle JDK 8 by typing
sudo apt install oracle-java8-installer
.- Press Y when prompted and agree to the licence terms.
Because what I see when I do that is as follows:
...ANSWER
Answered 2019-Sep-03 at 19:02Thanks for your notes and contribution!
I will pass the notes to the docs team and make changes accordingly.
QUESTION
I want to install java8 in Ubuntu image on docker. so I inserted follow codes in dockerfile:
...ANSWER
Answered 2019-May-15 at 10:54there is an image in Docker Hub that Ubuntu+java8. so can use this repository (enter link description here)
QUESTION
In my program I try tro grasp how to use ExecutorService to optimize my program. For some reason, It gets stuck a little on two Urls. The http://sjsu.edu/ and https://paypal.com. When it sits on these two, it does not continue executing other URLS.
Should the other 3 threads available not continue even though the two domains aren't responsing fast enough?
How is this fixed in the best possible manner?
...ANSWER
Answered 2018-Aug-22 at 12:40Problem
You call get()
on the Future
directly after creating it, blocking the main thread. Thus you don't have any parallel calls at all, and making the ExecutorService
essentially useless. Your code is equivalent to simply calling callableImpl.call()
yourself.
Solution
Don't call get()
if you want to continue execution and have each CallableImpl
run in parallel. Instead you can call es.awaitTermination()
after es.shutdown()
.
QUESTION
I'm trying to run a DockerFile.
What I want to do is run a MobileFirst Image so that I can run inside it File.adapter files. So first I want to raise the application server with a dockerfile, unfornutally I got this output:
...ANSWER
Answered 2018-Aug-15 at 16:20Ubuntu 14.4 is rather old now, consider a newer one, if possible. I don't know if updates for it are being published now.
If you have to use it, you might not be able to pull updates for it anymore. If there are no updates, the latest versions of all packages (at the time the last updates were published) should be available on archive.ubunut.com. There may be a handy replacement for /etc/apt/sources.list
somewhere that is configured to use the archive and works for Ubuntu 14.
QUESTION
I am using Java on Ubuntu 16.04. Recently I upgraded to Open JDK java version "1.8.0_161" installed using the oracle-java8-installer package (package version 8u161-1~webupd8~0). Since doing this upgrade , I am getting new exceptions when doing JAXB marshalling of Java objects.
Specifically, when attempting to use JAXB to marshal a Java object to XML I get the following exception if the Java object has a String property that contains any newline ("\n") characters and that String property is being serialized as element content in the XML. (As an aside, if the String property is serialized as attribute content, any newline character in the value of the String is converted to a space character and the exception is not triggered.)
What appears to be happening is that
com.sun.xml.internal.bind.v2.runtime.output.XMLStreamWriterOutput$NewLineEscapeHandler.escape
converts the newline character in the String property of the Java object to the entity reference
. This entity reference is then written out to the XML output stream but when verifying the entity reference name, the exception is being thrown because #xa is not being recognised as a valid entity reference name.
Is this the expected behaviour? If so, what should I do to preserve the newline characters in the serialization of the Java object? If not, what should I do to work around this problem?
The relevant part of the stack trace is:
...ANSWER
Answered 2018-Feb-28 at 14:30Geoff S,
I tried to comment on the existing post but I quickly found out that you need to have “50 reputations” which I do not have.
It appears that I am experiencing a similar issue when we moved to JDK 1.8.0_161 and 1.8.0_162 some of our SOAP services started throwing the exceptions below
QUESTION
Reading package lists... Done
Building dependency tree
Reading state information... Done
build-essential is already the newest version (12.1ubuntu2).
The following packages were automatically installed and are no longer required:
libllvm3.8 libpango1.0-0 linux-headers-4.4.0-101
linux-headers-4.4.0-101-generic linux-image-4.4.0-101-generic
linux-image-extra-4.4.0-101-generic linux-signed-image-4.4.0-101-generic
ubuntu-core-launcher
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 9 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] Y
Setting up oracle-java7-installer (7u80+7u60arm-0~webupd8~1) ...
Downloading Oracle Java 7...
--2018-03-16 19:02:01-- http://download.oracle.com/otn-pub/java/jdk/7u80-b15/jdk-7u80-linux-x64.tar.gz
Resolving download.oracle.com (download.oracle.com)... 2.19.56.117
Connecting to download.oracle.com (download.oracle.com)|2.19.56.117|:80... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: https://edelivery.oracle.com/otn-pub/java/jdk/7u80-b15/jdk-7u80-linux-x64.tar.gz [following]
--2018-03-16 19:02:08-- https://edelivery.oracle.com/otn-pub/java/jdk/7u80-b15/jdk-7u80-linux-x64.tar.gz
Resolving edelivery.oracle.com (edelivery.oracle.com)... 104.125.31.54, 2a02:26f0:5c:18a::2d3e, 2a02:26f0:5c:19c::2d3e
Connecting to edelivery.oracle.com (edelivery.oracle.com)|104.125.31.54|:443... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: http://download.oracle.com/otn-pub/java/jdk/7u80-b15/jdk-7u80-linux-x64.tar.gz?AuthParam=1521207256_c474be83dd84663bea2f4b9de8ad5cd2 [following]
--2018-03-16 19:02:16-- http://download.oracle.com/otn-pub/java/jdk/7u80-b15/jdk-7u80-linux-x64.tar.gz?AuthParam=1521207256_c474be83dd84663bea2f4b9de8ad5cd2
Connecting to download.oracle.com (download.oracle.com)|2.19.56.117|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2018-03-16 19:02:19 ERROR 404: Not Found.
download failed
Oracle JDK 7 is NOT installed.
dpkg: error processing package oracle-java7-installer (--configure):
subprocess installed post-installation script returned error exit status 1
E: Sub-process /usr/bin/dpkg returned an error code (1)
...ANSWER
Answered 2018-Apr-16 at 08:53Try this Solution:
QUESTION
I can't install automated Java9 installation in UBUNTU16 machine which was working fine since long. Is this due to intermittent network connectivity of download.oracle.com server? It usually works fine and all of sudden stopped working now. Is there anything wrong in below or any changes you suggest to make it working?
Please suggest work around for automated installation so just running command it will install Java9. Same issue with Java8 as well.
Command: ...ANSWER
Answered 2018-Mar-24 at 06:46No.
The Oracle web server returns a redirect link to a file that turns out no to be there. This should be a temporary error, so try again later.
OpenJDK 9 should be available in the Ubuntu repositories directly, and may be a usable alternative depending on your needs.
QUESTION
This post can be move to Linux or Super User blocks.
I want to install java 8 in my virtualbox ubuntu16.04, but whenever I check version using -version, it shows
...ANSWER
Answered 2017-Aug-08 at 15:44You've got Oracle Java installed, not OpenJDK. If you want to uninstall it, you can do this:
QUESTION
Sorry for the difficult description, but I know of no better way to say it.
When I look in certain tables of a MySQL database through the phpMyAdmin web interface, the numbers of the first two columns are prefixed by a '3'.
So if the first column has number 99, phpMyAdmin displays 3939.
The second column has number 3592, phpMyAdmin shows 33353932.
If I check the records with the mysql
CLI they are displayed correctly.
It only happens to some columns in some tables of some databases... not to all.
So it might be something with the tables themselves or something with phpMyAdmin.
System/version info:
- Ubuntu 16.04.3 LTS
- phpmyadmin 4:4.5.4.1-2ubuntu2
- apache2 2.4.18-2ubuntu3.5
- php7.0 7.0.22-0ubuntu0.16.04.1
- oracle-java9 9.0.1-1~webupd8~0
- mysql-server 5.7.20-0ubuntu0.16.04.1
I'm hoping someone has some idea of what might be happening here.
If you wish any further clarification please let me know.
mysql CLI:
...ANSWER
Answered 2018-Jan-20 at 13:37With the additional information that these columns are of BINARY
type I was able to find two bug reports describing this behaviour:
- broken view of binary fields (every second three)
- broken link to table of binary fields (every second three)
The first should have been resolved in phpMyAdmin 4.3, but I see that you're using version 4.5. The related second issue was reported against version 4.7.1 and fixed in version 4.7.3.
Try upgrading to phpMyAdmin 4.7.3 or later (at the time of writing the latest version is 4.7.7).
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