java

example.java.helloworld

This is "Hello World" Example for Java.

The structure HelloWorld package is like this: ::

example.java.helloworld/ |-- HelloWorld | -- Main.java |-- LICENSE |-- Manifest.txt -- README.md

Compile class

For compile the main class for package, execute the follow command: ::

javac HelloWorld/Main.java

This generate the Main.class file into HelloWorld directory.

Run class

For run the main class for package, execute the follow command: ::

java -cp . HelloWorld.Main

This show the Hello world message.

Create a JAR file

For pack the main class for package as a JAR file, execute the follow command: ::

jar cfme Main.jar Manifest.txt HelloWorld.Main HelloWorld/Main.class

Run a JAR file

For run the JAR file packed, execute the follow command: ::

java -jar Main.jar

This show the Hello world message.

Reference

• java - How to run a JAR file - Stack Overflow <http://stackoverflow.com/questions/1238145/how-to-run-a-jar-file>_.

• Setting an Application's Entry Point (The Java™ Tutorials > Deployment > Packaging Programs in JAR Files) <http://docs.oracle.com/javase/tutorial/deployment/jar/appman.html>_.