Ubuntu：未安装 Oracle JDK 8

Question

I've installed oracle JDK-8 on ubuntu 14.04 manually. but whenever I want to install a package that needs jdk8, apt-get tries to install jdk 8 again. my country is restricted so oracle server won't allow me to download jdk8.

$java -version

java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)

and the results of apt-get are:

download failed
Oracle JDK 8 is NOT installed.
dpkg: error processing package oracle-java8-installer (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 oracle-java8-installer
E: Sub-process /usr/bin/dpkg returned an error code (1)

with this error, apt-get won't finish the installation.

Answer 1

oracle-java8-installer is not able to download file. So downlaod it manually from Oracle site and put into folder /var/cache/oracle-jdk8-installer/ . And try to install oracle-java8-installer again. This solved the problem for me.

Step by step:

• Check what file oracle-java8-installer is not able to download. You can see it in installation log. Let's suppose it's jdk-8u111-linux-x64.tar.gz
• Google it jdk-8u111-linux-x64.tar.gz and you'll find exact page on Oracle site where to download it from. For our example it's http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
• Download jdk-8u111-linux-x64.tar.gz file and put in into folder /var/cache/oracle-jdk8-installer/ .
• And try to install oracle-jdk8-installer again: sudo apt-get install oracle-java8-installer Installation should finish successfully.

Answer 2

Try this,

First update the apt-get repos

$ sudo apt-get update

Add the java 8 repo to apt-get

$ sudo add-apt-repository ppa:webupd8team/java

Again update the apt-get repo

$ sudo apt-get update

Finally install java 8

$ sudo apt-get install oracle-java8-installer

References :

• Ubuntu 16.04
• Ubuntu 18.04

Answer 3

the first step:

sudo apt-get remove oracle-java8-installer

to clean up the failure installation of java8 perviously.

the second step:

sudo apt-get install oracle-java8-installer

to reinstall Java8

Answer 4

I suspect you've installed Oracle JDK8 using the archive, extracting to your own folder. It's probably the case that Ubuntu doesn't know that you've installed Java as the system Java and so is raising the error.

To be honest, I'm not sure how you go about installing it for system wide use but this page may provide some pointers. Installing Open JDK might be the better option, but an option is also given here , and this answer might also help.

Answer 5

One of the possible reasons and solution could be, that the version of the java package is updated with the possible vulnerability patch fix, and that needs to be updated in the PPA. I faced this when installing on ubuntu 16.04.

If the specific download error is that java download link is 404, than mostly this solution will work .

Please remember to update the versions accordingly.

Answer 6

This worked for me:

• First, go to below path:

  cd /var/lib/dpkg/info

Run all 4 sed commands:

sudo sed -i 's|JAVA_VERSION=8u161|JAVA_VERSION=8u172|' oracle-java8-installer.*
sudo sed -i 's|PARTNER_URL=http://download.oracle.com/otn-pub/java/jdk/8u161-b12/2f38c3b165be4555a1fa6e98c45e0808/|PARTNER_URL=http://download.oracle.com/otn-pub/java/jdk/8u172-b11/a58eab1ec242421181065cdc37240b08/|' oracle-java8-installer.*
sudo sed -i 's|SHA256SUM_TGZ="6dbc56a0e3310b69e91bb64db63a485bd7b6a8083f08e48047276380a0e2021e"|SHA256SUM_TGZ="28a00b9400b6913563553e09e8024c286b506d8523334c93ddec6c9ec7e9d346"|' oracle-java8-installer.*
sudo sed -i 's|J_DIR=jdk1.8.0_161|J_DIR=jdk1.8.0_172|' oracle-java8-installer.*

• Second:

  sudo apt-get install oracle-java8-installer

Answer 7

如果 OpenJDK 也适合您，请尝试使用sdkman安装所有 Java 人员）这是一个非常酷的工具。