I've recently been using Java again, so I thought I'd present some simple programs you can run in Java. Just type the following into a text editor but be careful because Java is case sensitive. Certain commands are expected to be entered using upper case letters.
public class HelloApp
{
public static void main(String[] args)
{
System.out.println("Hello, World!");
}
}
Save the file as HelloApp.java & compile it with the following...
javac HelloApp.java
Run it with the following...
java HelloApp
If you want to generate documentation using JavaDoc just type the following...
javadoc -d docs HelloApp.java
Finally, if you'd like to place your class in a Jar file, you must first create a Manifest file. Just place the following text in a file called Manifest.txt & make sure you place a newline at the end.
Main-Class: HelloApp
Then create the Jar file by typing the following...
jar cvfm HelloApp.jar Manifest.txt *.class
Run the Jar file with the following...
java -jar HelloApp.jar