install oracle java ubuntu 20.04

To install Oracle Java on Ubuntu 20.04, you can follow these steps:

1. Download the Oracle Java 11 JDK for Linux from the Oracle website.

2. Extract the downloaded ZIP file to the desired installation location. For example:

mkdir -p /opt/java
unzip jdk-11.0.10_linux-x64_bin.zip -d /opt/java

3. Set the JAVA_HOME environment variable to the path of the Java 11 installation. For example:

echo 'export JAVA_HOME="/opt/java/jdk-11.0.10"' >> ~/.bashrc

4. Add the bin directory of the Java 11 installation to the PATH environment variable. For example:

echo 'export PATH="$PATH:$JAVA_HOME/bin"' >> ~/.bashrc

5. Reload the environment variables:

source ~/.bashrc

6. Verify that Java 11 is installed and set as the default:

java -version

For more information on installing Java on Ubuntu 20.04, you can refer to the Oracle documentation or the OpenJDK documentation.