How to Switch Between Multiple Java Versions on Ubuntu

To switch between installed java versions, use the update-java-alternatives command. ... where /path/to/java/version is one of those listed by the previous command (e.g. /usr/lib/jvm/java-7-openjdk-amd64 ).

How do I switch Java on Ubuntu?
Can I have multiple Java versions installed Ubuntu?
How do I manage multiple Java versions?
How do I run multiple Java versions on Linux?
How do I change the default Java path in Linux?
How do I install Java on Linux?
Can I use two Java versions?
Can I run 2 versions of Java at the same time?
How can I use two JDK versions?
Can I install multiple versions of JDK?
Where does Sdkman install Java?
How do I check my version of Java?

How do I switch Java on Ubuntu?

To set the Java version interactively:

Log in as root or use sudo .
View the Java alternatives. sudo update-alternatives --config java. ...
Select a Java version, at the prompt, type a number. Press enter to keep the default[*], or type selection number: ...
Verify the switch, check the Java version. java -version.

Can I have multiple Java versions installed Ubuntu?

For example, you have installed multiple Java versions on your Ubuntu system. Now you want to switch to other Java version as default Java. According to the above screenshot, Java 10 is now set as default Java version on your system. You can use java -version command to view default version.

How do I manage multiple Java versions?

Using Locally Installed Java 8

$ sdk use java jdk1.8.0_172.jdk.
Using java version jdk1. 8.0_172. jdk in this shell.
$ java -version.
java version "1.8.0_172"
Java(TM) SE Runtime Environment (build 1.8.0_172-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.172-b11, mixed mode)

How do I run multiple Java versions on Linux?

Step 1: Install SDKMAN. Open a new terminal and enter curl -s “https://get.sdkman.io" | bash. ...
Step 2: List available JDKs. See the available Java versions offered by SDKMAN by giving the following command sdk list java. ...
Step 3: Install parallel JDKs. ...
Step 4: Switch between JDKs. ...
Step 5: Uninstall a JDK.

How do I change the default Java path in Linux?

Steps

Change to your home directory. cd $HOME.
Open the . bashrc file.
Add the following line to the file. Replace the JDK directory with the name of your java installation directory. export PATH=/usr/java/<JDK Directory>/bin:$PATH.
Save the file and exit. Use the source command to force Linux to reload the .

How do I install Java on Linux?

Change to the directory in which you want to install.

Change to the directory in which you want to install. Type: cd directory_path_name. ...
Move the . tar. gz archive binary to the current directory.
Unpack the tarball and install Java. tar zxvf jre-8u73-linux-i586.tar.gz. ...
Delete the . tar.

Can I use two Java versions?

10 Answers. It is absolutely possible to install side-by-side several JRE/JDK versions. ... You can change that, or the JAVA_HOME variable, or create specific cmd/bat files to launch the applications you desire, each with a different JRE in path.

Can I run 2 versions of Java at the same time?

Installation of multiple Java versions. Installing several Java versions at the same time is incredibly easy in Windows. You can download and run the installer for each version, which automatically installs the versions in separate directories.

How can I use two JDK versions?

Switch between different JDK versions in Windows

jdk14.bat @echo off. echo Setting JAVA_HOME. set JAVA_HOME=C:\j2sdk1.4.2_12. echo setting PATH. ...
jdk15.bat @echo off. echo Setting JAVA_HOME. set JAVA_HOME=C:\Program Files\Java\jdk1.5.0_12. echo setting PATH. ...
jdk16.bat @echo off. echo Setting JAVA_HOME. set JAVA_HOME=C:\Program Files\Java\jdk1.6.0_11. echo setting PATH.

Can I install multiple versions of JDK?

Yes, you can. Just use full path names when invoking javac , java , etc. or set your PATH environment variable to point to the appropriate jdk/bin location. The IDEs usually allow defining multiple JDKs/JREs, and you can choose which one to use for every project.

Where does Sdkman install Java?

The installed SDKs are stored in the SDKMAN! directory which defaults to ~/. sdkman/candidates. Therefore, the currently selected version of Java will also be available as current in that directory.

How do I check my version of Java?

Option 2: Check Java Version on Windows Using Command Line

Open the Windows Start menu in the bottom-left corner and type cmd in the search bar.
Then, open the Command Prompt once it appears in the search results.
A new window with the command prompt should appear. In it, type the command java -version and hit Enter.