Install Oracle Java 7 on Ubuntu 12.04

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Ngày cập nhật gần nhất: 15/4/2026

Oracle Java is widely used on Windows desktops, but what about Ubuntu? Have you ever heard of the open-source operating system Ubuntu, and can you install it there? Today's topic is how to install Oracle Java 7 on Ubuntu 12.04.

Ubuntu is an open-source operating system that provides users with useful tools for basic tasks such as web browsing, word processing, or watching movies. Users can use Ubuntu for free without any fees, and the operating system is constantly being updated. Hopefully, one day it can compete with Windows.

Mytour has had many articles related to Java, installing Java, but all those articles were only for Windows. In this article, we will guide you on how to install Java on the Ubuntu 12.04 operating system.

Guide to Installing Oracle Java 7 on Ubuntu 12.04

First, you can download the Ubuntu 12.04 version here: Ubuntu 12.04

Or download the latest version of Ubuntu if you prefer: Ubuntu

Note: The installation process requires your computer to be connected to the internet.

Step 1: First, users need to uninstall the openjdk file by sauclicking on the Dashboard as shown in the picture.

Step 2: Type Terminal and click on the search results.

Step 3: Enter the command “sudo apt-get purge openjdk*” then press Enter, wait a few seconds for it to complete.

Step 4: Next, enter the command “sudo add-apt-repository ppa:eugenesan/java” then press Enter.

If the system prompts to continue or stop, simply press Enter to proceed.

Step 5: Then, enter the following two commands one by one, each taking about 30 seconds to complete.

Type “sudo apt-get update” then press Enter.
Type “sudo apt-get install oracle-java7-installer” then press Enter.

Step 6: Go back to the Dashboard to check, and you will see that Oracle Java 7 has been successfully installed.

Frequently Asked Questions

What are the essential steps to install Oracle Java 7 on Ubuntu 12.04?

To install Oracle Java 7 on Ubuntu 12.04, first uninstall openjdk using the command 'sudo apt-get purge openjdk*'. Then, add the PPA repository with 'sudo add-apt-repository ppa:eugenesan/java'. Next, update the package list with 'sudo apt-get update' and install Java with 'sudo apt-get install oracle-java7-installer'. Ensure your internet connection is active throughout this process.

Is it necessary to uninstall OpenJDK before installing Oracle Java 7 on Ubuntu?

Yes, it is necessary to uninstall OpenJDK before installing Oracle Java 7. This prevents conflicts between the two Java installations and ensures that Oracle Java is set as the default version on your Ubuntu system.

How can I check if Oracle Java 7 has been successfully installed on Ubuntu?

After completing the installation process, you can check if Oracle Java 7 is installed by opening the Terminal and typing 'java -version'. If installed successfully, you will see the version information for Oracle Java 7 displayed in the terminal.

What prerequisites should I have before installing Oracle Java on Ubuntu 12.04?

Before installing Oracle Java on Ubuntu 12.04, ensure your system is connected to the internet. You should also have basic knowledge of using the Terminal, as you'll need to enter specific commands during the installation process.

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