((NEWBIE to JAVA))Facing prob while compiling java prog using command prompt

MY CODE IS

public class demo
{
public static void main(string args)
{
system.out.println(“my first java app”);
}
}

it is saved as demo.java and it is stored in javap folder on desktop.
during compilation through command prompt i got 2 errors.
C:\Users\rahul\Desktop\javap>javac demo.java
demo.java:3: error: cannot find symbol
public static void main(string args)
^
symbol: class string
location: class demo
demo.java:5: error: package system does not exist
system.out.println(“my first java app”);
^
2 errors

I have solved 2nd error(package system does not exist) but unable to solve 1st error pls help.

Try with uppercase S
String

thanx prob solved…