How do I know if I have Java 8 on Linux?

How do I know if java 8 is installed on Linux?

Method 1: Check the Java Version On Linux

  1. Open a terminal window.
  2. Run the following command: java -version.
  3. The output should display the version of the Java package installed on your system. In the example below, OpenJDK version 11 is installed.

How do I know if I have java 8 installed?

Type “java -version” into the Command Prompt, then press Enter on your keyboard. After a moment, your screen should display the information your computer has about Java, including what version you have installed. If nothing displays, it most likely means that you don’t have Java installed on your computer at all.

What version of java do I have Linux?

4 Answers. The simplest way is: update-java-alternatives -l shows you all the Java versions you have installed. java -version shows you the Java version you are using.

Where is java 8 installed Linux?

The Java files are installed in a directory called jre1. 8.0_73 in the current directory. In this example, it is installed in the /usr/java/jre1.

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How do I install java 8 on Ubuntu?

Installing Open JDK 8 on Debian or Ubuntu Systems

  1. Check which version of the JDK your system is using: java -version. …
  2. Update the repositories: …
  3. Install OpenJDK: …
  4. Verify the version of the JDK: …
  5. If the correct version of Java is not being used, use the alternatives command to switch it: …
  6. Verify the version of the JDK:

Is java 1.8 the same as java 8?

In JDK 8 and JRE 8, the version strings are 1.8 and 1.8. … Here are some examples where the version string is used: java -version (among other information, returns java version “1.8. 0” )

How do I tell what Java version I have?

Java Version under Windows Start Menu – Java 7 Update 40 (7u40) and later versions

  1. Launch the Windows Start menu.
  2. Click on Programs.
  3. Find the Java program listing.
  4. Click About Java to see the Java version.

How do I know if I have Java JDK installed?

Open command prompt and enter “java –version”. If installed version number is displayed.

How do I know if Java bit is installed?

Peace!

  1. Go to the command prompt.
  2. Type “java -version” and press enter.
  3. If you are running Java 64-bit the output should include “64-Bit”

Where is Java installed on Linux?

It’s /usr/local/java/jdk[version]

The actual directory is java-11-openjdk-amd64 , with another symlink of default-java .

What version of Java do I have Ubuntu?

Open a Linux Terminal (command prompt). Step 2: Enter the command java -version. If Java is installed on your Ubuntu 16.04 LTS system, you will see a Java version installed in response.

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How do I find the Linux version?

Check os version in Linux

  1. Open the terminal application (bash shell)
  2. For remote server login using the ssh: ssh user@server-name.
  3. Type any one of the following command to find os name and version in Linux: cat /etc/os-release. lsb_release -a. hostnamectl.
  4. Type the following command to find Linux kernel version: uname -r.

How do I make java 8 default on Ubuntu?

Choose your default Java Version. sudo update-java-alternatives -s $(sudo update-java-alternatives -l | grep 8 | cut -d ” ” -f1) || echo ‘. ‘ It will automatically fetch any java 8 version available and set it using the command update-java-alternatives .

How do I install java 8 on Amazon Linux?

You can simply install Java 11 or Java 8 on the Amazon Linux system using the following commands.

  1. Run below commands to install Java 11 on Amazon Linux: sudo amazon-linux-extras install java-openjdk11.
  2. Run below commands to install Java 8 on Amazon Linux: sudo yum install java-1.8.0-openjdk.

How do I install java 8 on Linux Mint?

How to install Oracle JDK on Linux Mint

  1. Open up the Terminal (Alt + F2 > Terminal).
  2. Remove OpenJDK installation. …
  3. Download Oracle JDK from here. …
  4. Change directory into one with downloaded tarball. …
  5. Extract tarball. …
  6. As a root create a folder in /opt where jdk will be stored. …
  7. Move extracted folder to /opt/java.