Java 17 is running successfully! Version: 17.0.x | Problem | Likely Fix | | :--- | :--- | | 'java' is not recognized (Windows) | Java's bin folder is not in your PATH. Reinstall the .msi and ensure "Add to PATH" is selected. | | Unable to locate a Java Runtime (macOS) | Run /usr/libexec/java_home -V to see installed versions. Then manually set JAVA_HOME . | | Multiple Java versions conflict | On Linux, use sudo update-alternatives --config java to pick version 17. On Windows, reorder PATH entries. | | Permission denied (Linux) | Did you use sudo when moving files to /usr/lib/jvm/ ? | Conclusion You now have Java 17 installed and ready for development. With an LTS release, you won't need to worry about major updates until at least 2029. Next steps: install an IDE like IntelliJ IDEA or VS Code, or start compiling from the terminal.
public class Test public static void main(String[] args) System.out.println("Java 17 is running successfully!"); System.out.println("Version: " + System.getProperty("java.version"));
Compile and run:
Add this to your ~/.bashrc , ~/.zshrc , or ~/.profile file:
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: installing java 17
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 :
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. Java 17 is running successfully
javac Test.java java Test Expected output: