我无法在 Ubuntu 16.04 上安装 JDK7 下载失败

Question

I'm trying to install jdk7 on a my Ubuntu 16.04 machine, here are the commands that I executed:

sudo apt-get update
sudo apt-get install python-software-properties
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer

The last one returned Download Failed error and was not able to install the package.

Error Screenshot

When I did some digging I found that Oracle no longer provide JDK7 download link on their official site.

If someone has figured out a way to install it please help !

Answer 1

You should restart your machine and then again try installing.

Or

Try openjdk as

sudo apt-get update
sudo apt-get install openjdk-7-jdk

openjdk is an open source alternative to oracles jdk. And it should be much preferred on an open source OS like ubuntu

Answer 2

Ok, since the binaries are not longer available you will have to download it manually

1) download jdk-7u80-linux-i586.tar.gz or jdk-7u80-linux-x64.tar.gz based on the architecture of your operative system from here (you will have to create an oracle account if you dont have one)

2) Move the file that you just downloaded to this directory /var/cache/oracle-jdk7-installer/

3) Finally run the below commands

sudo echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee /etc/apt/sources.list.d/webupd8team-java.list
sudo echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886
sudo apt-get update
sudo echo oracle-java7-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections
sudo apt-get -y install oracle-java7-installer

Answer 3

Try this(this will install oracle JDK),

First update the apt-get repos

$ sudo apt-get update

Add the java(7 and 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 7

$ sudo apt-get install oracle-java7-installer