error no package system?

any ideas of whats wrong or what im doing wrong? thanks

C:\Documents and Settings\Dylan Moore\My Documents>javac app.java

app.java:4: package system does not exist

system.out.println("I Rule!");

^

app.java:5: package system does not exist

system.out.println("The World");

^

2 errors

[340 byte] By [gtrdude18a] at [2007-10-1 23:50:43]