Java Notes

import java.util.Properties;

class HelloWorldApp {
 public static void main(String[] args) {
        Properties myprops = System.getProperties();
  System.out.println("Hello World!"); // Display the string.
        myprops.list(System.out);
 }
}

huge mem calculator:
http://www.peuss.de/node/67

http://www.tikalk.com/alm/forums/tuning-big-java-heap-and-linux-huge-pages

http://javabook.compuware.com/content/memory/analyzing-java-memory.aspx