Step 5: Run the Java preview feature code With the code compiled, you can execute it by adding the --enable-preview switch to the java command: jdk13@preview:$ java --enable-preview ...

Here's a quick example of how to run a Jenkins war file from the command line, DOS prompt or terminal window in Linux/Ubuntu. The short story? java -jar jenkins.war ...

Java 18's Simple Web Server lets you use a command-line tool or API to host files and more. Here's how it works.