Compile and run:
Remember: If you ever need to switch between Java versions (e.g., Java 11 for an older project), tools like jEnv (macOS/Linux) or the "Java Version Manager" for Windows can help. installing java 17
sudo apt update sudo apt install openjdk-17-jdk Many Java tools (Maven, Gradle, Tomcat) rely on the JAVA_HOME variable. The Windows .msi installer often sets this automatically. Check using: Compile and run: Remember: If you ever need
export JAVA_HOME=$(/usr/libexec/java_home) # macOS only # OR for Linux: export JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64 export PATH=$JAVA_HOME/bin:$PATH Then reload: source ~/.bashrc Create a simple Java program to confirm everything works. Save the following as Test.java : Java 11 for an older project)
javac Test.java java Test Expected output: