Installing Java 7 on Ubuntu

Question

to install java I have always used the classic way from the terminal. I would like to install java manually. I placed the folder of the JDK on the desk and I set environment

Answer 1

I think you should consider Java installation procedure carefully. Following is the detailed process which covers almost all possible failures.

Installing Java with apt-get is easy. First, update the package index:

sudo apt-get update

Then, check if Java is not already installed:

java -version

If it returns "The program java can be found in the following packages", Java hasn't been installed yet, so execute the following command:

sudo apt-get install default-jre

You are fine till now as I assume.

This will install the Java Runtime Environment (JRE). If you instead need the Java Development Kit (JDK), which is usually needed to compile Java applications (for example Apache Ant, Apache Maven, Eclipse and IntelliJ IDEA execute the following command:

sudo apt-get install default-jdk

That is everything that is needed to install Java.

Installing OpenJDK 7:

To install OpenJDK 7, execute the following command:

sudo apt-get install openjdk-7-jre 

This will install the Java Runtime Environment (JRE). If you instead need the Java Development Kit (JDK), execute the following command:

sudo apt-get install openjdk-7-jdk

Installing Oracle JDK:

The Oracle JDK is the official JDK; however, it is no longer provided by Oracle as a default installation for Ubuntu.

You can still install it using apt-get. To install any version, first execute the following commands:

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

Then, depending on the version you want to install, execute one of the following commands:

Oracle JDK 7:

sudo apt-get install oracle-java7-installer

Oracle JDK 8:

sudo apt-get install oracle-java8-installer

Answer 2

flup's answer is the best but it did not work for me completely. I had to do the following as well to get it working:

1. export JAVA_HOME=/usr/lib/jvm/java-7-oracle/jre/
2. chmod 777 on the folder
3. ./gradlew build - Building Hibernate

Answer 3

In addition to flup's answer you might also want to run the following to set JAVA_HOME and PATH:

sudo apt-get install oracle-java7-set-default

More information at: http://www.ubuntuupdates.org/package/webupd8_java/precise/main/base/oracle-java7-set-default

Answer 4

This answer used to describe how to install Oracle Java 7. This no longer works since Oracle end-of-lifed Java 7 and put the binary downloads for versions with security patches behind a paywall. Also, OpenJDK has grown up and is a more viable alternative nowadays.

In Ubuntu 16.04 and higher, Java 7 is no longer available. Usually you're best off installing Java 8 (or 9) instead.

sudo apt-get install openjdk-8-jre

or, f you also want the compiler, get the jdk:

sudo apt-get install openjdk-8-jdk

In Trusty, the easiest way to install Java 7 currently is to install OpenJDK package:

sudo apt-get install openjdk-7-jre

or, for the jdk:

sudo apt-get install openjdk-7-jdk

If you are specifically looking for Java 7 on a version of Ubuntu that no longer supports it, see https://askubuntu.com/questions/761127/how-do-i-install-openjdk-7-on-ubuntu-16-04-or-higher .

Answer 5

Download java jdk<version>-linux-x64.tar.gz file from https://www.oracle.com/technetwork/java/javase/downloads/index.html.

Extract this file where you want. like: /home/java(Folder name created by user in home directory).

Now open terminal. Set path JAVA_HOME=path of your jdk folder(open jdk folder then right click on any folder, go to properties then copy the path using select all) and paste here.

Like: JAVA_HOME=/home/xxxx/java/JDK1.8.0_201

Let Ubuntu know where our JDK/JRE is located.

sudo update-alternatives --install /usr/bin/java java /home/xxxx/java/jdk1.8.0_201/bin/java 20000
sudo update-alternatives --install /usr/bin/javac javac /home/xxxx/java/jdk1.8.0_201/bin/javac 20000
sudo update-alternatives --install /usr/bin/javaws javaws /home/xxxx/java/jdk1.8.0_201/bin/javaws 20000

Tell Ubuntu that our installation i.e., jdk1.8.0_05 must be the default Java.

sudo update-alternatives --set java /home/xxxx/sipTest/jdk1.8.0_201/bin/java
sudo update-alternatives --set javac /home/xxxx/java/sipTest/jdk1.8.0_201/bin/javac
sudo update-alternatives --set javaws /home/xxxxx/sipTest/jdk1.8.0_201/bin/javaws

Now try:

$ sudo update-alternatives --config java

There are 3 choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                  Priority   Status
------------------------------------------------------------
* 0            /usr/lib/jvm/java-6-oracle1/bin/java   1047      auto mode
  1            /usr/bin/gij-4.6                       1046      manual mode
  2            /usr/lib/jvm/java-6-oracle1/bin/java   1047      manual mode
  3            /usr/lib/jvm/jdk1.7.0_75/bin/java      1         manual mode

Press enter to keep the current choice [*], or type selection number: 3

update-alternatives: using /usr/lib/jvm/jdk1.7.0_75/bin/java to provide /usr/bin/java (java) in manual mode

Repeat the above for:

sudo update-alternatives --config javac
sudo update-alternatives --config javaws

Answer 6

PPA method no longer works.

While Oracle Java 6 and 7 are not supported for quite a while, they were still available for download on Oracle's website until recently.

However, the binaries were removed about 10 days ago (?), so the Oracle Java (JDK) 6 and 7 installers available in the WebUpd8 Oracle Java PPA no longer work.

Oracle Java 6 and 7 are now only available for those with an Oracle Support account (which is not free), so I can't support this for the PPA packages.

Source : http://www.webupd8.org/2017/06/why-oracle-java-7-and-6-installers-no.html Dated : June 2017

Oracle's download page says

Updates for Java SE 7 released after April 2015, and updates for Java SE 6 released after April 2013 are only available to Oracle Customers through My Oracle Support (requires support login).

Java SE Advanced offers users commercial features, access to critical bug fixes, security fixes, and general maintenance".

I had to download it from Oracle archives - http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html

You need an account for this though.